Avaya IPv6 User Manual

Conﬁguring IPv6 Services

BayRS V ersion 12.00 Site Manager Software Version 6.00

Part No. 118428-A Rev. A September 1997

4401 Great America Parkway 8 Federal Street Santa Clara, CA 95054 Billerica, MA 01821

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The software described in this document is furnished under a license agreement and may only be used in accordance with the terms of that license. A summary of the Software License is included in this document.

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All other trademarks and registered trademarks are the property of their respective owners.

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Notwithstanding any other license agreement that may pertain to, or accompany the delivery of, this computer software, the rights of the United States Government regarding its use, reproduction, and disclosure are as set forth in the Commercial Computer Software-Restricted Rights clause at FAR 52.227-19.

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118428-A Rev. A

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Licensee agrees not to export, directly or indirectly, the Software or related technical data

118428-A Rev. A

About This Guide

Before You Begin .............................................................................................................xvi

Conventions .....................................................................................................................xvi

Acronyms ........................................................................................................................xvii

Ordering Bay Networks Publications .............................................................................xviii

Bay Networks Customer Service .....................................................................................xix

How to Get Help ..............................................................................................................xix

Chapter 1 IPv6 Overview

IPv6 Header ....................................................................................................................1-1

IPv6 Addresses ..............................................................................................................1-2

Address Preﬁx ..........................................................................................................1-2

Interface ID ...............................................................................................................1-3

Anycast Address ......................................................................................................1-3

Multicast Address .....................................................................................................1-3

IPv4-Compatible Address ........................................................................................1-4

Address Formats ......................................................................................................1-4

Tunnels ...........................................................................................................................1-6

Static IPv4 Tunnel .....................................................................................................1-6

Automatic IPv4 Tunnel ..............................................................................................1-8

Semiautomatic IPv4 Tunnel ....................................................................................1-10

IPv6 Tunnels ...........................................................................................................1-10

Packet Forwarding ........................................................................................................1-10

IPv6 Extension Headers ...............................................................................................1-11

Neighbor Discovery ......................................................................................................1-12

Address Autoconﬁguration ............................................................................................1-12

RIPv6 ............................................................................................................................1-13

118428-A Rev. A

Chapter 2 Starting IPv6 Services

Starting IPv6 ...................................................................................................................2-1

Adding Neighbor Disovery to an IPv6 Interface ..............................................................2-2

Adding RIPv6 to an IPv6 Interface .................................................................................2-2

Chapter 3 Conﬁguring and Customizing IPv6

Customizing IPv6 Globally ..............................................................................................3-2

Enabling and Disabling Global IP .............................................................................3-2

Conﬁguring IPv6 in Not-Forwarding Mode ...............................................................3-3

Supplying a Value for the Hop Limit Field ................................................................3-4

Specifying a Minimum Link MTU Size ......................................................................3-5

Enabling and Disabling MTU Path Discovery ...........................................................3-6

Specifying an MTU Path Timeout Period .................................................................3-7

Customizing an IPv6 Interface ........................................................................................3-8

Enabling and Disabling the Interface ........................................................................3-9

Supplying a Description of the Interface ................................................................3-10

Supplying an Interface ID .......................................................................................3-11

Specifying the Circuit Name ...................................................................................3-12

Specifying the Link Layer Address .........................................................................3-13

Specifying an MTU Size for the Link ......................................................................3-14

Specifying the Size of the Forwarding Table ..........................................................3-15

Conﬁguring IPv6 on the Circuitless Interface .........................................................3-16

Enabling and Disabling Redirect Messages ...........................................................3-17

Conﬁguring ICMP Error Messages ........................................................................3-18

Enabling and Disabling TR End Station Support ...................................................3-19

Specifying an SMDS Group Address .....................................................................3-20

Specifying Frame Relay Broadcast DLCI ...............................................................3-21

Specifying Frame Relay Multicast DLCI .................................................................3-22

Conﬁguring a Tunnel on the Interface ...........................................................................3-23

Conﬁguring an IPv6 Interface as a Tunnel End Point .............................................3-24

Specifying a Tunnel Type ........................................................................................3-25

Specifying a Local IPv4 Address ............................................................................3-27

Specifying a Remote IPv4 Address ........................................................................3-28

Specifying a Local IPv6 Index ................................................................................3-29

118428-A Rev. A

Specifying a Remote IPv6 Address ........................................................................3-30

Conﬁguring an IPv6 Address Preﬁx ..............................................................................3-31

Associating a Preﬁx with an interface ID ................................................................3-32

Enabling and Disabling Use of the Preﬁx ...............................................................3-33

Supplying an Address Preﬁx ..................................................................................3-34

Specifying the Length of the Preﬁx ........................................................................3-35

Specifying a Routing Preference ............................................................................3-36

Specifying a Cost ...................................................................................................3-37

Conﬁguring the Preﬁx for On-Link Determination ..................................................3-38

Enabling Autonomous Address Conﬁguration ........................................................3-39

Supplying a Preferred Lifetime Value .....................................................................3-40

Supplying a Valid Lifetime Value ............................................................................3-41

Customizing IPv6 Neighbor Discovery .........................................................................3-42

Enabling and Disabling Neighbor Discovery ..........................................................3-43

Controlling Router Advertisements ........................................................................3-44

Controlling Address Autoconﬁguration ...................................................................3-45

Controlling Nonaddress Autoconﬁguration .............................................................3-46

Specifying a Neighbor Reachability Time ..............................................................3-47

Specifying a Retransmission Time For Neighbor Solicitations ...............................3-48

Specifying a Maximum Hop Limit for ND Advertisements ......................................3-49

Specifying a Minimum Time for Unsolicited Advertisements ..................................3-50

Specifying a Maximum Time for Unsolicited Advertisements .................................3-51

Specifying a Lifetime for the Default Router ...........................................................3-52

Conﬁguring Address Duplication Detection ...........................................................3-53

Deﬁning an IPv6 Adjacent Node ...................................................................................3-54

Enabling and Disabling the Adjacent Node Deﬁnition ............................................3-55

Supplying the Physical Address of the Adjacent Node ..........................................3-56

Specifying the Link Layer Encapsulation Type .......................................................3-57

Specifying a Route Preference Value .....................................................................3-58

Specifying the Cost ................................................................................................3-59

Supplying the WAN Address of the Adjacent Node ...............................................3-60

Conﬁguring an IPv6 Static Route .................................................................................3-61

Associating the Static Route with an Interface .......................................................3-61

Enabling and Disabling the Static Route ................................................................3-62

Supplying the Destination IPv6 Address Preﬁx ......................................................3-63

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vii

Specifying the Preﬁx Length ..................................................................................3-64

Supplying the IPv6 Next-Hop Address ...................................................................3-65

Specifying a Route Preference Value .....................................................................3-66

Specifying the Cost ................................................................................................3-67

Conﬁguring a Static Default Route ...............................................................................3-68

Conﬁguring a Black Hole ..............................................................................................3-68

Chapter 4 Conﬁguring RIPv6

Enabling and Disabling RIP ............................................................................................4-2

Supplying RIP Updates ..................................................................................................4-3

Receiving RIP Updates ..................................................................................................4-4

Supplying a Default Route ..............................................................................................4-5

Listening for a Default Route ..........................................................................................4-6

Specifying the Update Mode ..........................................................................................4-7

Specifying an Interval for Update Broadcasts ................................................................4-8

Specifying a Timeout Period for an Unreachable Network .............................................4-9

Specifying a Hold Down Time .......................................................................................4-10

Sending Triggered Updates ..........................................................................................4-11

Specifying the RIPv6 Diameter .....................................................................................4-12

Conﬁguring RIPv6 Policies ...........................................................................................4-13

Conﬁguring a RIPv6 Accept Policy ........................................................................4-14

Conﬁguring a RIPv6 Announce Policy ...................................................................4-16

Appendix A Site Manager Parameters for IP Version 6

IPv6 Global Parameters .................................................................................................A-1

IPV6 Interface Parameters ...................................................................................... A-3

IPv6 Preﬁx Parameters ................................................................................................ A-11

IPv6 Neighbor Discovery Parameters ..........................................................................A-14

IPv6 Adjacent Node Parameters ................................................................................. A-18

IPv6 Static Route Parameters ..................................................................................... A-20

RIP IPv6 Interface Parameters .................................................................................... A-22

RIPv6 Accept Policy Parameters ................................................................................. A-26

RIPv6 Announce Policy Parameters ............................................................................ A-31

Index

viii

118428-A Rev. A

Figures

Figure 1-1. 128-Bit IPv6 Address Format ...................................................................1-2

Figure 1-2. Multicast Address Format ........................................................................1-3

Figure 1-3. IPv4-Compatible Unicast Address Format ...............................................1-4

Figure 1-4. Conﬁgured IPv4 Static Tunnel ..................................................................1-7

Figure 1-5. Automatic IPv4 Tunnel .............................................................................1-9

Figure 1-6. IPV6 Header and Extension Headers ....................................................1-11

118428-A Rev. A

About This Guide

If you are responsible for conﬁguring IPv6 and RIPv6, you need to read this guide.

If you want to Go to

Learn about IPv6 concepts and services Chapter Start IPv6 services on the router Chapter 2 Conﬁgure and Customize IPv6 Chapter 3 Conﬁgure and customize RIPv6 Chapter 4 Obtain information about Site Manager parameters (this is the same

information you obtain using Site Manager online Help)

Appendix A

118428-A Rev. A

Configuring IPv6 Services

. .

Before You Begin

Before using this guide, you must complete the following procedures. For a new router:

• Install the router (refer to the installation manual that came with your router).

• Connect the router to the network and create a pilot conﬁguration ﬁle (see

Quick-Starting Routers, Conﬁguring BayStack Remote Access ASN Routers to a Network)

Make sure that you are running the latest version of Bay Networks® Site Manager and router software. For instructions, see

7–11.xx to Version 12.00

Conventions

angle brackets (< >) Indicate that you choose the text to enter based on the

, or

Upgrading Routers from Version

description inside the brackets. Do not type the brackets when entering the command.

ping

Example: if command syntax is you enter

ping 192.32.10.12

<ip_address>

Connecting

bold text

Indicates text that you need to enter, command names, and buttons in menu paths. Example: Enter

Example: Use the Example: ATM DXI > Interfaces >

wfsm &

dinfo

command.

PVCs

identiﬁes the PVCs button in the window that appears when you select the Interfaces option from the ATM DXI menu.

brackets ([ ]) Indicate optional elements. You can choose none, one,

or all of the options.

ellipsis points Horizontal (. . .) and vertical ellipsis points indicate

()

omitted information.

italic text

Indicates variable values in command syntax descriptions, new terms, ﬁle and directory names, and book titles.

quotation marks (“ ”) Indicate the title of a chapter or section within a book.

xii

118428-A Rev. A

About This Guide

Acronyms

screen text

Indicates data that appears on the screen. Example:

Set Bay Networks Trap Monitor Filters

separator ( > ) Separates menu and option names in instructions and

internal pin-to-pin wire connections. Example: Protocols > AppleTalk identiﬁes the AppleTalk option in the Protocols menu.

Example: Pin 7 > 19 > 20

vertical line (|) Indicates that you enter only one of the parts of the

command. The vertical line separates choices. Do not type the vertical line when entering the command. Example: If the command syntax is

show at routes show at routes

AUI Attachment Unit Interface BootP Bootstrap Protocol BRI Basic Rate Interface CCITT International Telegraph and Telephone Consultative Committee

(now ITU-T) CSMA/CD carrier sense multiple access with collision detection DLCMI Data Link Control Management Interface GUI graphical user interface HDLC high-level data link control IP Internet Protocol ISDN Integrated Services Digital Network ISO International Organization for Standardization ITU-T International Telecommunications Union-Telecommunications

(formerly CCITT) LAN local area network MAC media access control MAU media access unit MDI-X media-dependent interface with crossover NBMA nonbroadcast multi-access

nets

, you enter either

show at nets

, but not both.

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xiii

Configuring IPv6 Services

OSI Open Systems Interconnection OSPF Open Shortest Path First (Protocol) PPP Point-to-Point Protocol SMDS switched multimegabit data service SNMP Simple Network Management Protocol STP shielded twisted-pair TCP/IP Transmission Control Protocol/Internet Protocol Telnet Telecommunication Network TFTP Trivial File Transfer Protocol TPE twisted-pair Ethernet UTP unshielded twisted-pair WAN wide area network

Ordering Bay Networks Publications

To purchase additional copies of this document or other Bay Networks publications, order by part number from Bay Networks Press™ at the following numbers:

xiv

• Phone--U.S./Canada: 888-422-9773

• Phone--International: 510-490-4752

• FAX--U.S./Canada and International: 510-498-2609 The Bay Networks Press catalog is available on the World Wide Web at

support.baynetworks.com/Library/GenMisc

available on the World Wide Web at

support.baynetworks.com/Library/tpubs

. Bay Networks publications are

118428-A Rev. A

Bay Networks Customer Service

You can purchase a support contract from your Bay Networks distributor or authorized reseller, or directly from Bay Networks Services. For information about, or to purchase a Bay Networks service contract, either call your local Bay Networks ﬁeld sales ofﬁce or one of the following numbers:

Region Telephone number Fax number

About This Guide

United States and Canada

Europe 33-4-92-96-69-66 33-4-92-96-69-96 Asia/Paciﬁc 61-2-9927-8888 61-2-9927-8899 Latin America 561-988-7661 561-988-7550

Information about customer service is also available on the World Wide Web at

support.baynetworks.com

How to Get Help

If you purchased a service contract for your Bay Networks product from a distributor or authorized reseller, contact the technical support staff for that distributor or reseller for assistance.

If you purchased a Bay Networks service program, call one of the following Bay Networks Technical Solutions Centers:

800-2LANWAN; then enter Express Routing Code (ERC) 290, when prompted, to purchase or renew a service contract

978-916-8880 (direct)

978-916-3514

118428-A Rev. A

Technical Solutions Center Telephone number Fax number

Billerica, MA 800-2LANWAN 978-916-3514 Santa Clara, CA 800-2LANWAN 408-495-1188 Valbonne, France 33-4-92-96-69-68 33-4-92-96-69-98 Sydney, Australia 61-2-9927-8800 61-2-9927-8811 Tokyo, Japan 81-3-5402-0180 81-3-5402-0173

Chapter 1

IPv6 Overview

This overview of IP Version 6 covers the following topics:

Topic Page

IPv6 Header IPv6 Addresses 1-18 Tunnels 1-21 Packet Forwarding 1-25 IPv6 Extension Headers 1-26 Neighbor Discovery 1-27 Address Autoconﬁguration 1-27 RIPv6 1-28

IPv6 Header

The IPv6 protocol deﬁnes the header used by IPv6 nodes (hosts and routers) to deliver a data packet from a sender to one or more destinations.

The address for a data packet. The header also includes a ﬂow control ﬁeld that an IPv6 host can use to label packets that require special handling by IPv6 routers -for example, packets that require a real-time service.

IPv6 header

1-17

supplies a 128-bit source address and a 128-bit destination

118428-A Rev. A

1-17

Configuring IPv6 Services

IPv6 Addresses

An IPv6 address consists of 128 bits that identify an interface or a set of interfaces. The address consists of two parts: an address preﬁx and an IPv6 interface ID. The ﬁrst 3 bits of the address indicate the type of address that follows

-- a unicast address, for example.

igure 1-1 shows the basic parts of an IPv6 address.

Figure 1-1. 128-Bit IPv6 Address Format

Address Preﬁx

The are listed in the hierarchical order of the organizations that issue them.

• At the top of the hierarchy, international registries assign blocks of addresses

• TLAs allocate blocks of address to the

• An NLA that is a service provider further allocates its addresses to its

TLA and NLA addresses are part of the public Internet topology. SLA addresses are part of private site-level topologies.

Type Address prefix

address pr eﬁx

top-level aggregators

consists of one or more

(TLAs). TLA addresses provide the public transit

InterfaceID ( or Token )

aggregator addr esses

IPV0003A

. These addresses

points where long-haul service providers establish peer connections.

next-level aggregators

(NLAs), the

large Internet service providers and global corporate networks.

subscribers, the lowest-level aggregators, the

site-level aggregators

(SLAs).

1-18

118428-A Rev. A

Interface ID

The

interface ID

router). For stateless autoconﬁguration (see “Address Autoconﬁguration” on page 1-27), this ID is 64 bits long.

In IPv6 stateless autoconﬁguration, the interface ID is derived by a formula that uses the link layer 48-bit MAC address. (In most cases, the interface ID is a 64-bit token that contains the 48-bit MAC address.) This means that to the extent that the MAC address is unique, the IPv6 interface ID is unique.

If you conﬁgure tokens or MAC addresses (or both) manually, there need be no relation between the MAC address and the token. A manually conﬁgured token may also be longer or shorter than 64 bits.

Anycast Address

IPv6 Overview

token

is a unique number identifying an IPv6 node (a host or a

An IPv6 that share a common variable-length address preﬁx. A packet bearing an anycast address is delivered to one node in the group.

Multicast Address

An IPv6 multicast address is delivered to all members of the group. (The function of IPv4 broadcast addresses has been superseded by IPv6 multicast addresses.)

igure 1-2 shows the format of an IPv6 multicast address.

8 bits 4 bits 4 bits

11111111

Figure 1-2. Multicast Address Format

A value of FF (11111111) in the 8 high-order bits of an IPv6 address indicates that the address speciﬁes a multicast group. The 4-bit the group is permanent or transient. The 4 -bit the group speciﬁed in the 112-bit

anycast address

multicast addres

flags scope group ID

is a unicast address identifying a group of IPv6 nodes

s identiﬁes a group of nodes. A packet bearing a

112 bits

IPV0001A

ﬂags

ﬁeld indicates whether

scope

ﬁeld indicates the scope of

group ID

ﬁeld.

118428-A Rev. A

1-19

Configuring IPv6 Services

IPv4-Compatible Address

The IPv4-compatible address, which includes an IPv4 address in the low-order 32 bits, is intended for IPv6 nodes that need to interoperate with IPv4 nodes.

igure 1-3 shows the format of an IPv4-compatible address.

0000 0000 0000 0000 0000 0000

Figure 1-3. IPv4-Compatible Unicast Address Format

Address Formats

The format for representing an IPv6 address is

n:n:n:n:n:n:n:n

n is the hexadecimal representation of 16 bits in the address. For example:

FF01:0:0:0:0:0:0:43

Each nonzero ﬁeld must contain at least one numeral. W ithin a gi v en hexadecimal ﬁeld, however, leading 0s are not required.

Certain classes of IPv6 addresses commonly include multiple contiguous ﬁelds containing hexadecimal 0. Our sample address includes ﬁve contiguous ﬁelds containing 0. These ﬁelds can be represented by double colons (::). For example:

96 bits

32 bits

IPv4 address

IPV0002A

FF01::43

A double colon can also be used to compress the leading zero ﬁelds in a hexadecimal address. A double colon can appear once in an address.

1-20 118428-A Rev. A

Tunnels

IPv6 Overview

An IPv4-compatible address combines hexadecimal and decimal values as follows:

x.x.x.x.x.x.d.d.d.d x:x:x:x:x:x is a hexadecimal representation of the six high-order 16-bit pieces of

d.d.d.d

the address and

is a decimal representation of the four 8-bit pieces of the

address. For example:

0:0:0:0:0:0:13.1.68.3

::13.1.68.3

Tunneling is a forwarding technique in which a packet is encapsulated inside another packet.

IPv6 supports two kinds of encapsulating tunnels: IPv4 tunnels and IPv6 tunnels. In IPv4 tunneling, a router running both IPv6 and IPv4 encapsulates an IPv6

packet within an IPv4 packet. This technique allo ws IPv6 nodes in noncontiguous IPv6 regions to forward messages through an intervening region of IPv4 nodes.

In IPv6 tunneling, a router running IPv6 encapsulates an IPv6 packet in another IPv6 packet. This section covers the following topics:

Topic Page

Static IPv4 Tunnel 1-22 Automatic IPv4 Tunnel 1-23 Semiautomatic IPv4 Tunnel 1-25 IPv6 Tunnels 1-25

118428-A Rev. A 1-21

Configuring IPv6 Services

Static IPv4 Tunnel

A static tunnel -- also called a conﬁgured tunnel -- is a mechanism for forwarding any IPv6 packet through an IPv4 region. F an IPv4 interface on router C and an IPv4 interface on router D. (Note that routers C and D are running both IPv4 and IPv6).

igure 1-4 shows a static tunnel between

IPv6

Region 1

IPv6 IPv6

Configured

IPv6

IPv4

IPV4 tunnel

with end points

IPv4

Region 2

IPv4

Region 3

IPv6

IPv4

IP0042A

Figure 1-4. Conﬁgured IPv4 Static Tunnel

In Figure 1-4, for example, a user connected to router B in Region 1 sends a packet addressed to a user on router F in Region 3. The following steps occur:

1. Router C receives the IPv6 packet and determines that it must be forwarded

out its tunnel interface.

1-22 118428-A Rev. A

2. Router C encapsulates the IPv6 packet in an IPv4 header.

The source address in the IPv4 header is the IPv4 address of the local tunnel interface on router C. The destination address is the IPv4 address of the remote tunnel interface on router D.

3. Using the IPv4 header, intermediate IPv4 routers in Region 2 forward the

encapsulated packet through the IPv4 region to router D.

4. Router D decapsulates the packet (removing the IPv4 header) and forwards

the original IPv6 packet to router F.

After you have conﬁgured the IPv4 interfaces on the end point routers, the tunnel becomes a permanent point-to-point link in the IPv6 topology.

Automatic IPv4 Tunnel

An automatic tunnel is a mechanism for forwarding unicast IPv6 packets that use the IPv4-compatible address format. All routers in IPv6 re gions that use automatic tunneling must run both IPv6 and IPv4.

IPv6 creates the tunnel dynamically as needed for the purpose of forwarding an IPv6 packet through multiple IPv4 and IPv4/IPv6 routers.

IPv6 Overview

igure 1-5, for example, a user connected to router B in Region 1 wants to send

In F an IPv6 packet to a user on router J in Region 3.

118428-A Rev. A 1-23

Configuring IPv6 Services

IPv6

IPv4

IPv6

IPv4

Region 1

IPv6

IPv4

IPv6/V4

IPv6

IPv4

Automatic

IPV4 tunnel

with end points

IPv4

Region 2

IPv4

IPv6

IPv4

Region 3

IPv6

IPv4

IPv6

IPv4

IPv6/V4

IP0041A

Figure 1-5. Automatic IPv4 Tunnel

The following steps occur:

1. Router D receives the packet and determines that the next hop requires an

automatic tunnel.

2. Router D encapsulates the packet in an IPv4 header.

The source address in the IPv4 header is the IPv4 address of the local tunnel interface on node D.

The destination address is the IPv4 address contained in the IPv4-compatible IPv6 address. This is the address of an IPv4 interface on router J.

3. IPv4 routers in Region 2 forward the packet to Region 3.

4. IPv4/ IPv6 router in Region 3 forward the IPv4 packet to router J.

1-24 118428-A Rev. A

5. Router J decapsulates the packet.

Note that unlike a conﬁgured tunnel, which is a permanent point-to-point link in the IPv6 topology, an automatic tunnel is a dynamic mechanism, created by the encapsulating end point for the purpose forwarding an IPv6 packet. After the packet reaches its destination, the automatic tunnel no longer exists.

Semiautomatic IPv4 Tunnel

A semiautomatic tunnel acts as a static tunnel for outgoing trafﬁc and as an automatic (multipoint-to-point) tunnel for incoming trafﬁc.

IPv6 Tunnels

Like an IPv4 tunnel, an IPv6 tunnel can be a static tunnel, an automatic tunnel, or a semiautomatic tunnel.

Packet Forwarding

IPv6 forwards

IPv6 Overview

• Unicast packets not addressed to itself.

• Packets with predeﬁned multicast addresses.

• Packets addressed to itself that include a routing source extension header. The

extension header speciﬁes a list of one or more intermediate nodes that deﬁne a path for the packet to follow through the network to its destination.

IPv6 processes packets that are addressed to itself (with the exception of packets that contain a routing option extension header). IPv6 recognizes the following addresses as identifying itself:

• A unicast address assigned to the router

• A loopback address used by a node to send an IPv6 datagram to itself

• An all-nodes or all-hosts multicast address

• An anycast address assigned to the router

118428-A Rev. A 1-25

Configuring IPv6 Services

IPv6 Extension Headers

IPv6 extension headers describe processing options. Each extension header contains a separate category of options. A packet can include zero or more extension headers (F

igure 1-6).

Datalink

header

Figure 1-6. IPV6 Header and Extension Headers

IPv6

header

Ipv6 extension

headers

•••

Upper-layer

headers

User data

IP0046A

IPv6 examines the destination address in the main header of each packet it receives to determine whether the router is the packet’s destination or an intermediate node in the packet’s data path.

• If the router is the destination of the packet, IPv6 examines the header

extensions that contain options for destination processing.

• If the router is an intermediate node, IPv6 e xamines the header extensions that

contain forwarding options.

By examining only the extension headers that apply to the operations it performs, IPv6 reduces the amount of time and processing resources required to process a packet.

IPv6 deﬁnes the following extension headers:

• The source routing extension header contains a list of one or more

intermediate nodes that deﬁne a path for the packet to follow through the network to its destination. The packet source creates this list. This function is similar to IPv4 source routing options.

• The fragmentation extension header is used by an IPv6 source to send packets

larger than the size speciﬁed for the path MTU.

• The authentication extension header and the security encapsulation extension

header, used singly or together, provide security services for IPv6 datagrams.

1-26 118428-A Rev. A

• The hop-by-hop extension header contains optional information that must be

examined by all intermediate IPv6 routers between the source and the destination.

• The end-to-end extension header contains optional information that must be

examined by the destination node.

Neighbor Discovery

Neighbor discovery (ND) allows IPv6 nodes on the same link to discover link layer addresses and to obtain and advertise various network parameters and reachability information. ND combines the services provided for IPv4 by the Address Resolution Protocol (ARP) and router discovery.

Address Autoconﬁguration

Typically, to start the process of autoconﬁguration, a node

• Self-conﬁgures a link-local address to use temporarily. The host can form this

address by adding a generic local address preﬁx to a unique token (typically, the host’s IEE LAN interface address).

IPv6 Overview

• Sends out an ND message to the address to ensure that it is unique. If no ND

message comes back, the address is unique. If a message comes back indicating that the link-local address is already in use, the host uses a different token (for example, an administrative token or a randomly generated token).

• Uses the IPv6 multicast service to send out an ND router solicitation request,

using the new link-local address as a source address. Unlike the broadcast ARPs of IPv4, ND multicast solicitations are not necessarily processed by all nodes on the link. IPv6 deﬁnes several permanent multicast groups for ﬁnding resources on a local node or link, including an all-routers group, an all-hosts group, and a Dynamic Host Conﬁguration Protocol (DHCP) server group.

Routers respond to the solicitation messages from hosts with a unique router advertisement that includes preﬁx information indicating a valid range of addresses for the subnet. Routers can also send these advertisements periodically to local multicast groups, whether or not they receive solicitations.

Using the router advertisement message that it sends in response to a solicitation from a host, an IPv6 router can control whether the host uses stateful or stateless autoconﬁguration.

118428-A Rev. A 1-27

Configuring IPv6 Services

In stateful autoconﬁguration, the host contacts a DHCP or similar address server, which assigns an address from a manually administered list.

In stateless autoconﬁguration, a host can automatically conﬁgure its own IPv6 address without the help of a stateful address server. The host uses the globally valid address preﬁx information in the router advertisement message to create its own IPv6 address. The host concatenates the valid preﬁx with its link layer address (or a similar unique token) to create an IPv6 address.

RIPv6

RIPv6 -- the Routing Information Protocol for IPv6 -- is a distance-vector protocol that enables IPv6 routers in the same autonomous system to exchange routing information by means of periodic RIP updates. Routers transmit their own RIPv6 updates to neighboring networks and listen for RIPv6 updates from the routers on those neighboring networks. Routers use the information in the RIPv6 updates to keep their internal routing tables current. For RIPv6, the “best” path to a destination is the shortest path (the path with the fewest hops). RIPv6 computes distance as a metric, usually the number of hops (or routers) from the origin network to the target network.

RIPv6 is described in Cha

1-28 118428-A Rev. A

pter 4.

Starting IPv6

Before you can choose a protocol to run on the router, you must conﬁgure a circuit that the protocol can use as an interface to an attached network. For information and instructions, see Conﬁguring Ethernet, FDDI, and Token Ring Services or Conﬁguring WAN Line Services.

When you have successfully conﬁgured the circuit, the Select Protocols window opens. Proceed as follows:

Chapter 2

Starting IPv6 Services

Site Manager Procedure

You do this System responds

1. In the Select Protocols window, choose IPv6.

2. Click on OK to accept default values for IPv6 parameters.

The Conﬁgure Interfaces window opens.

You return to the Conﬁguration Manager window.

IPv6 is now conﬁgured on this interface and slot with default values for all global and interface parameters. You customize IPv6 by modifying IPv6 parameters as described in Cha

118428-A Rev. A 2-1

pter 3.

Configuring IPv6 Services

Adding Neighbor Discovery to an IPv6 Interface

Use Site Manager to add Neighbor Discovery to an IPv6 interface as follows.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose Neighbor Discovery. The List IPv6 Neighbor Discovery window

4. Choose Add. The Values Selection window opens.

5. Choose the IPv6 interface to which you want to add Neighbor Discovery, and click on OK.

6. Click on Apply and Done to accept def ault values for Neighbor Discovery parameters.

To customize the Neighbor Discovery values, go to pa

Adding RIPv6 to an IPv6 Interface

Use Site Manager to add RIPv6 to an IPv6 interface as follows.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose RIPv6 Interfaces. The RIPv6 Interfaces window opens.

4. Choose Add. The IPv6 Indexes window opens.

5. Choose the index value for the IPv6 interface to which you want to add RIPv6.

6. Click on Apply and Done to accept def ault values for RIPv6 parameters.

The Protocols menu opens.

opens.

The Values Selection window closes and the interface you chose appears in the List IPv6 Neighbor Discovery window.

You return to the Conﬁguration Manager window.

ge 3-42.

The Protocols menu opens.

The RIPv6 Interfaces window reopens.

You return to the Conﬁguration Manager window.

To customize the RIPv6 values, go to Cha

pter 4.

2-2 118428-A Rev. A

Chapter 3

Conﬁguring and Customizing IPv6

You conﬁgure and customize IPv6 by setting IPv6 parameters as described under the following topics:

Topic Page

Customizing IPv6 Globally 3-2 Customizing an IPv6 Interface 3-8 Conﬁguring a Tunnel on the Interface 3-23 Conﬁguring an IPv6 Address Preﬁx 3-31 Customizing IPv6 Neighbor Discovery 3-42 Deﬁning an IPv6 Adjacent Node 3-54 Conﬁguring an IPv6 Static Route 3-61 Conﬁguring a Static Default Route 3-68 Conﬁguring a Black Hole 3-68

118428-A Rev. A 3-1

Configuring IPv6 Services

Customizing IPv6 Globally

When you conﬁgure an IPv6 interface, IPv6 runs on the router with default values for all global parameters. You customize IPv6 on the router by modifying global parameters as described under the following topics:

T opic Page

Enabling and Disabling Global IP 3-2 Conﬁguring IPv6 in Not-Forwarding Mode 3-3 Supplying a Value for the Hop Limit Field 3-4 Specifying a Minimum Link MTU Size 3-5 Enabling and Disabling MTU Path Discovery 3-6 Specifying an MTU Path Timeout Period 3-7

Enabling and Disabling Global IP

By default, IPv6 is enabled on the router. You can use the following Site Manager procedure to change the state as required.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose IPv6 Global. The Edit IPv6 Global Parameters window

4. Set the Enable parameter. Click on Help or see the parameter description on page A-1.

5. Click on OK. Site Manager returns you to the

3-2 118428-A Rev. A

The Protocols menu opens.

opens.

Conﬁguration Manager window.

Conﬁguring IPv6 in Not-Forwarding Mode

By default IPv6 forwards all packets that are not addressed to itself. You can use the following Site Manager procedure to specify whether this entity is

acting as an IPv6 router in respect to the forwarding of datagrams. Ipv6 routers forward received datagrams that are not addressed to itself. IPv6 hosts do not forward datagrams (except those source-routed via the host).

Site Manager Procedure

You do this System responds

Configuring and Customizing IPv6

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose IPv6 Global. The Edit IPv6 Global Parameters window

4. Set the Forwarding parameter. Click on Help or see the parameter description on page A-1.

5. Click on OK. Site Manager returns you to the

The Protocols menu opens.

opens.

Conﬁguration Manager window.

118428-A Rev. A 3-3

Configuring IPv6 Services

Supplying a Value for the Hop Limit Field

The IPv6 header includes a hop limit ﬁeld set by the originating router (the source node). Each intermediate node (that is, each node that receives and forwards the packet) decrements the hop-limit value by one. When the hop-limit value decrements to zero, the packet is discarded. (The IPv6 hop-limit value serves the same function as the IPv4 time-to-live value.)

By default, IPv6 inserts a value of 64 into the Hop Limit ﬁeld of the header of datagrams originated at the router.

If the transport layer protocol supplies a hop-limit value, IPv6 uses that value. You can use the following Site Manager procedure to specify a hop-limit value

from 0 to 255.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose IPv6 Global. The Edit IPv6 Global Parameters window

4. Set the Default Hop parameter. Click on Help or see the parameter description on page A-2.

5. Click on OK. Site Manager returns you to the

The Protocols menu opens.

opens.

Conﬁguration Manager window.

3-4 118428-A Rev. A

Specifying a Minimum Link MTU Size

Each link in the IPv6 internet has a maximum transmission unit (MTU) size. The MTU size is expressed in bytes.

IPv6 uses MTU path discovery to learn the MTU size used in the IPv6 internet. (For instructions and information, see “Enabling and Disabling MTU Path Discovery” on page 3-6.)

By default, if MTU path discovery is disabled, IPv6 generates packets with an MTU size of 576 bytes.

By changing this parameter, you can control the maximum size of packets that can be generated by this router if MTU path discovery is disabled.

You can use the following Site Manager procedure to specify a minimum link MTU size from 296 to 65535 bytes.

Site Manager Procedure

You do this System responds

Configuring and Customizing IPv6

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose IPv6 Global. The Edit IPv6 Global Parameters window

4. Set the Minimum Link MTU parameter. Click on Help or see the parameter description on page A-2.

5. Click on OK. Site Manager returns you to the

118428-A Rev. A 3-5

The Protocols menu opens.

opens.

Conﬁguration Manager window.

Configuring IPv6 Services

Enabling and Disabling MTU Path Discovery

Each link in the IPv6 internet has an MTU size, which is expressed in bytes. By default IPv6 uses MTU path discovery to learn the MTU size for the IPv6

internet. Disable this feature if you want to use the Minimum Link MTU parameter to

control the maximum size of self-generated packets. You can use the following Site Manager procedure to enable and disable MTU

path discovery support for self-originated packets.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose IPv6 Global. The Edit IPv6 Global Parameters window

4. Set the MTU Discovery parameter. Click on Help or see the parameter description on page A-2.

5. Click on OK. Site Manager returns you to the

The Protocols menu opens.

opens.

Conﬁguration Manager window.

3-6 118428-A Rev. A

Specifying an MTU Path Timeout Period

By default, a router that has learned a link MTU value through MTU path discovery considers the value to be valid for 10 minutes.

You can use the following Site Manager procedure to specify a timeout period from 1 minute to 71582788 minutes or to disable the feature (by specifying 0).

Site Manager Procedure

You do this System responds

Configuring and Customizing IPv6

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose IPv6 Global. The Edit IPv6 Global Parameters window

4. Set the MTU Timeouts parameter. Click on Help or see the parameter description on page A-3.

5. Click on OK. Site Manager returns you to the

The Protocols menu opens.

opens.

Conﬁguration Manager window.

118428-A Rev. A 3-7

Configuring IPv6 Services

Customizing an IPv6 Interface

When you conﬁgure an IPv6 interface on a circuit, IPv6 runs with default values for all interface parameters. You customize the IPv6 interface by modifying parameters as described under the following topics:

Topic Page

Enabling and Disabling the Interface 3-9 Supplying a Description of the Interface 3-10 Supplying an Interface ID 3-11 Specifying the Circuit Name 3-12 Specifying the Link Layer Address 3-13 Specifying an MTU Size for the Link 3-14 Specifying the Size of the Forwarding Table 3-15 Conﬁguring IPv6 on the Circuitless Interface 3-16 Enabling and Disabling Redirect Messages 3-17 Conﬁguring ICMP Error Messages 3-18 Enabling and Disabling TR End Station Support 3-19 Specifying an SMDS Group Address 3-20 Specifying Frame Relay Broadcast DLCI 3-21 Specifying Frame Relay Multicast DLCI 3-22

3-8 118428-A Rev. A

Enabling and Disabling the Interface

By default, IPv6 is enabled on the interface: You can use the following Site Manager procedure to disable and reenable IPv6

on the interface as required.

Site Manager Procedure

You do this System responds

Configuring and Customizing IPv6

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose Edit IPv6 Interfaces. The IPv6 Interfaces window opens.

4. Click on the interface you want to edit. Site Manager displays the parameter

5. Set the Enable parameter. Click on Help or see the parameter description on page A-3.

6. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

values for that interface.

Conﬁguration Manager window.

118428-A Rev. A 3-9

Configuring IPv6 Services

Supplying a Description of the Interface

You can use the following Site Manager procedure to enter a description of the IPv6 interface from 1 to 255 characters.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose Edit IPv6 Interfaces. The IPv6 Interfaces window opens.

4. Click on the interface you want to edit. Site Manager displays the parameter

5. Set the Interface Description parameter. Click on Help or see the parameter description on page A-3.

6. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

values for that interface.

Conﬁguration Manager window.

3-10 118428-A Rev. A

Supplying an Interface ID

The interface ID -- also called the token -- is a unique number identifying an IPv6 node (a host or a router). This ID is 64 bits long for stateless autoconﬁguration.

In IPv6 stateless autoconﬁguration, the interface ID is derived by a formula that uses the link layer 48-bit MAC address. (In most cases, the interface ID is a 64-bit number that contains the 48-bit MAC address.)

If you elect to conﬁgure interface tokens or MAC addresses (or both) manually, there need not be any relation between the MAC address and the token. A manually conﬁgured token may also be longer or shorter than 64 bits.

You can use the following Site Manager procedure to supply a different interface ID from one to six characters.

You do this System responds

Configuring and Customizing IPv6

Site Manager Procedure

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose Edit IPv6 Interfaces. The IPv6 Interfaces window opens.

4. Click on the interface you want to edit. Site Manager displays the parameter

5. Set the Interface Token parameter. Click on Help or see the parameter description on page A-4.

6. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

values for that interface.

Conﬁguration Manager window.

118428-A Rev. A 3-11

Configuring IPv6 Services

Specifying the Circuit Name

By default, IPv6 uses the circuit name you speciﬁed when you conﬁgured the interface.

You can conﬁgure an interface as the circuitless interface or as a tunnel end point.

• To conﬁgure the interface as the circuitless interface, set this parameter with a value greater than 1023 (the highest valid circuit number).

• To conﬁgure the interface as a tunnel end point, set this parameter to 0.

You can use the following Site Manager procedure to set the Circuit Name parameter.

You do this System responds

Site Manager Procedure

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose Edit IPv6 Interfaces. The IPv6 Interfaces window opens.

4. Click on the interface you want to edit. Site Manager displays the parameter

5. Set the Circuit Name parameter. Click on Help or see the parameter description on page A-4.

6. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

values for that interface.

Conﬁguration Manager window.

3-12 118428-A Rev. A

Specifying the Link Layer Address

By default, IPv6 uses the 48-bit MAC address of the interface on which this interface is conﬁgured as the link layer address.

You can use the following Site Manager procedure to supply a link layer address.

Site Manager Procedure

You do this System responds

Configuring and Customizing IPv6

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose Edit IPv6 Interfaces. The IPv6 Interfaces window opens.

4. Click on the interface you want to edit. Site Manager displays the parameter

5. Set the Link Layer Address parameter. Click on Help or see the parameter description on page A-4.

6. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

values for that interface.

Conﬁguration Manager window.

118428-A Rev. A 3-13

Configuring IPv6 Services

Specifying an MTU Size for the Link

By default, IPv6 uses the default MTU size for the underlying medium. You can specify a different MTU size for the conﬁgured link from 0 to 65535.

IPv6 considers this value only if it is less than the default MTU of the underlying medium.

Enter 0 if you want IPv6 to use the default MTU of the underlying medium. You can use the following Site Manager procedure to perform this operation.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose Edit IPv6 Interfaces. The IPv6 Interfaces window opens.

4. Click on the interface you want to edit. Site Manager displays the parameter

5. Set the Link MTU parameter. Click on Help or see the parameter description on page A-5.

6. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

values for that interface.

Conﬁguration Manager window.

3-14 118428-A Rev. A

Specifying the Size of the Forwarding Table

By default, IPv6 allows a maximum of 128 entries in the interface forwarding table (also called the cache) at one time. There is a forwarding table for each interface.

You can use the following Site Manager procedure to conﬁgure a forwarding table for 0 to 20480 entries.

Site Manager Procedure

You do this System responds

Configuring and Customizing IPv6

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose Edit IPv6 Interfaces. The IPv6 Interfaces window opens.

4. Click on the interface you want to edit. Site Manager displays the parameter

5. Set the Cache Size parameter. Click on Help or see the parameter description on page A-5.

6. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

values for that interface.

Conﬁguration Manager window.

118428-A Rev. A 3-15

Configuring IPv6 Services

Conﬁguring IPv6 on the Circuitless Interface

If you want to conﬁgure IPv6 on the circuitless interface, you must set the circuit number to a value greater than 1023.

You can use the following Site Manager procedure to specify a slot or indicate acceptable slots for the circuitless interface.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose Edit IPv6 Interfaces. The IPv6 Interfaces window opens.

4. Click on the interface you want to edit. Site Manager displays the parameter

5. Set the Slot Mask parameter. Click on Help or see the parameter description on page A-5.

6. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

values for that interface.

Conﬁguration Manager window.

3-16 118428-A Rev. A

Enabling and Disabling Redirect Messages

By default, IPv6 sends Internet Control Message Protocol (ICMP) redirect messages on this interface.

You can use the following Site Manager procedure to disable and reenable redirect messages on the IPv6 interface.

Site Manager Procedure

You do this System responds

Configuring and Customizing IPv6

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose Edit IPv6 Interfaces. The IPv6 Interfaces window opens.

4. Click on the interface you want to edit. Site Manager displays the parameter

5. Set the Redirect On/Off parameter. Click on Help or see the parameter description on page A-6.

6. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

values for that interface.

Conﬁguration Manager window.

118428-A Rev. A 3-17

Configuring IPv6 Services

Conﬁguring ICMP Error Messages

By default, IPv6 is allowed to transmit up to 100 ICMP error messages per second on this interface.

You can use the following Site Manager procedure to supply a different maximum number.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose Edit IPv6 Interfaces. The IPv6 Interfaces window opens.

4. Click on the interface you want to edit. Site Manager displays the parameter

5. Set the Max ICMP Messages parameter. Click on Help or see the parameter description on page A-6.

6. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

values for that interface.

Conﬁguration Manager window.

3-18 118428-A Rev. A

Configuring and Customizing IPv6

Enabling and Disabling TR End Station Support

By default, IPv6 does not provide source routing support for a token ring network. If the interface is connected to a token ring network, you can use the following

Site Manager procedure to enable TR end station support.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose Edit IPv6 Interfaces. The IPv6 Interfaces window opens.

4. Click on the interface you want to edit. Site Manager displays the parameter

5. Set the TR End Station parameter. Click on Help or see the parameter description on page A-6.

6. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

values for that interface.

Conﬁguration Manager window.

118428-A Rev. A 3-19

Configuring IPv6 Services

Specifying an SMDS Group Address

You can use the following Site Manager procedure to provide a switched multimegabit data service (SMDS) group address for this interface.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose Edit IPv6 Interfaces. The IPv6 Interfaces window opens.

4. Click on the interface you want to edit. Site Manager displays the parameter

5. Set the SMDS Group Address parameter . Click on Help or see the parameter description on page A-7.

6. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

values for that interface.

Conﬁguration Manager window.

3-20 118428-A Rev. A

Specifying Frame Relay Broadcast DLCI

You can use the following Site Manager procedure to supply a frame relay broadcast data link connection identiﬁer (DLCI).

Site Manager Procedure

You do this System responds

Configuring and Customizing IPv6

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose Edit IPv6 Interfaces. The IPv6 Interfaces window opens.

4. Click on the interface you want to edit. Site Manager displays the parameter

5. Set the Frame Relay Broadcast DLCI parameter. Click on Help or see the parameter description on page A-7.

6. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

values for that interface.

Conﬁguration Manager window.

118428-A Rev. A 3-21

Configuring IPv6 Services

Specifying Frame Relay Multicast DLCI

You can use the following Site Manager procedure to supply frame relay multicast DLCI numbers 1 and 2.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose Edit IPv6 Interfaces. The IPv6 Interfaces window opens.

4. Click on the interface you want to edit. Site Manager displays the parameter

5. Set the following parameters:

• Frame Relay Multicast DLCI #1

• Frame Relay Multicast DLCI #2

Click on Help or see the parameter descriptions beginning on page A-7.

6. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

values for that interface.

Conﬁguration Manager window.

3-22 118428-A Rev. A

Conﬁguring a Tunnel on the Interface

For an overview of tunnels and information about the types of tunnels you can conﬁgure on an IPv6 interface, see “Tunnels” on page 1-21.

To conﬁgure a tunnel on this interface,

1. Conﬁgure the IPv6 interface as a tunnel end point.

2. Specify the type of type of tunnel you want to conﬁgure.

3. Supply the local and remote end point addresses required for the type of

tunnel you are conﬁguring.

These operations are described under the following topics:

Topic Page

Conﬁguring an IPv6 Interface as a Tunnel End Point 3-24 Specifying a Tunnel Type 3-25 Specifying a Local IPv4 Address 3-27 Specifying a Remote IPv4 Address 3-28 Specifying a Local IPv6 Index 3-29 Specifying a Remote IPv6 Address 3-30

Configuring and Customizing IPv6

118428-A Rev. A 3-23

Configuring IPv6 Services

Conﬁguring an IPv6 Interface as a Tunnel End Point

To indicate that the interface is the end point of a tunnel, use the following Site Manager procedure to enter a circuit number of 0.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose Edit IPv6 Interfaces. The IPv6 Interfaces window opens.

4. Click on the interface you want to edit. Site Manager displays the parameter

5. Set the Circuit Name parameter with the value 0.

6. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

values for that interface.

Conﬁguration Manager window.

3-24 118428-A Rev. A

Specifying a Tunnel Type

For information about IPv6 and IPv4 tunnel types, see “Tunnels” on page 1-21. IPv6 supports the following types of tunnels:

• IPv4 static tunnel. If you specify an IPv4 static tunnel, you must supply an IPv4 address for the local and remote end point.

• IPv4 automatic tunnel. If you specify an IPv4 automatic tunnel, you must supply an IPv4 address for the local end point.

• IPv4 semiautomatic tunnel. If you specify an IPv4 semiautomatic tunnel, you must supply an IPv4 address for the local and remote end points.

• IPv6 static tunnel. If you specify an IPv6 static tunnel, you must supply an IPv6 index number for the local end point and supply an IPv6 address for remote end point.

• IPv6 automatic tunnel. If you specify an IPv6 automatic tunnel, you must supply an IPv6 address for the local end point.

• IPv6 semiautomatic tunnel. If you specify an IPv6 semiautomatic tunnel, you must supply an IPv6 index number for the local end point and supply an IPv6 address for the remote end point.

Configuring and Customizing IPv6

118428-A Rev. A 3-25

Configuring IPv6 Services

You can use the following Site Manager procedure to specify the type of tunnel you want you want to conﬁgure on the interface.

You do this System responds

Site Manager Procedure

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose Edit IPv6 Interfaces. The IPv6 Interfaces window opens.

4. Click on the interface you want to edit. Site Manager displays the parameter

5. Set the Tunnel Protocol Type parameter. Click on Help or see the parameter description on page A-8.

6. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

values for that interface.

Conﬁguration Manager window.

3-26 118428-A Rev. A

Specifying a Local IPv4 Address

If you are conﬁguring an IPv4 static tunnel, an IPv4 automatic tunnel, or an IPv4 semiautomatic tunnel, you must supply the IP address of the local IPv4 end point.

This address becomes the source address in the encapsulating IPv4 header. You can use the following Site Manager procedure to specify a local IPv4 address.

You do this System responds

Configuring and Customizing IPv6

Site Manager Procedure

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose Edit IPv6 Interfaces. The IPv6 Interfaces window opens.

4. Click on the interface you want to edit. Site Manager displays the parameter

5. Set the Tunnel IPv4 Local Address parameter. Click on Help or see the parameter description on page A-9.

6. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

values for that interface.

Conﬁguration Manager window.

118428-A Rev. A 3-27

Configuring IPv6 Services

Specifying a Remote IPv4 Address

If you are conﬁguring an IPv4 static tunnel or an IPv4 semiautomatic tunnel, you must supply a remote IPv4 address.

For a static tunnel and a semiautomatic tunnel, this address becomes the destination address in the encapsulating IPv4 header.

You can use the following Site Manager procedure to perform this operation.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose Edit IPv6 Interfaces. The IPv6 Interfaces window opens.

4. Click on the interface you want to edit. Site Manager displays the parameter

5. Set the Tunnel IPv4 Remote Address parameter. Click on Help or see the parameter description on page A-9.

6. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

values for that interface.

Conﬁguration Manager window.

3-28 118428-A Rev. A

Specifying a Local IPv6 Index

If you are conﬁguring an IPv6 static tunnel, an IPv6 automatic tunnel, or an IPv6 semiautomatic tunnel, you must supply the IPv6 index of the local IPv6 end point.

This index is used to create the source address in the encapsulating IPv6 header. You can use the following Site Manager procedure to supply a local IPv6 index.

You do this System responds

Configuring and Customizing IPv6

Site Manager Procedure

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose Edit IPv6 Interfaces. The IPv6 Interfaces window opens.

4. Click on the interface you want to edit. Site Manager displays the parameter

5. Set the IPv6 Local Index parameter. Click on Help or see the parameter description on page A-10.

6. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

values for that interface.

Conﬁguration Manager window.

118428-A Rev. A 3-29

Configuring IPv6 Services

Specifying a Remote IPv6 Address

If you are conﬁguring an IPv6 static tunnel or an IPv6 semiautomatic tunnel, you must supply a remote IPv6 address.

For a static tunnel and a semiautomatic tunnel, this address becomes the destination address in the encapsulating IPv6 header.

You can use the following Site Manager procedure to supply a remote IPv6 address.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose Edit IPv6 Interfaces. The IPv6 Interfaces window opens.

4. Click on the interface you want to edit. Site Manager displays the parameter

5. Set the Tunnel IPv6 Remote Address parameter. Click on Help or see the parameter description on page A-10.

6. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

values for that interface.

Conﬁguration Manager window.

3-30 118428-A Rev. A

Conﬁguring an IPv6 Address Preﬁx

An IPv6 address consists of an interface ID and an address preﬁx. For information about IPv6 addresses, see Chapter 1.

You conﬁgure an IPv6 address preﬁx by setting parameters as described under the following topics:

Section Page

Associating a Preﬁx with an interface ID 3-32 Enabling and Disabling Use of the Preﬁx 3-33 Supplying an Address Preﬁx 3-34 Specifying the Length of the Preﬁx 3-35 Specifying a Routing Preference 3-36 Specifying a Cost 3-37 Conﬁguring the Preﬁx for On-Link Determination 3-38 Enabling Autonomous Address Conﬁguration 3-39 Supplying a Preferred Lifetime Value 3-40 Supplying a Valid Lifetime Value 3-41

Configuring and Customizing IPv6

118428-A Rev. A 3-31

Configuring IPv6 Services

Associating a Preﬁx with an interface ID

You can use following Site Manager procedure to add an address preﬁx to an interface ID to create a complete IPv6 address.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Preﬁxes. The IPv6 Preﬁxes window opens.

4. Click on Add. The Values Selection window opens.

5. Choose the IPv6 index of the interface to which you want to add the preﬁx.

6. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

The IPv6 Preﬁxes window reopens.

Conﬁguration Manager window.

3-32 118428-A Rev. A

Enabling and Disabling Use of the Preﬁx

By default, an address preﬁx you conﬁgure is enabled for use. You can use the following Site Manager procedure to disable and reenable the

preﬁx.

Site Manager Procedure

You do this System responds

Configuring and Customizing IPv6

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Preﬁxes. The IPv6 Preﬁxes window opens.

4. Set the Enable parameter. Click on Help or see the parameter description on page A-11.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

Conﬁguration Manager window.

118428-A Rev. A 3-33

Configuring IPv6 Services

Supplying an Address Preﬁx

You can use the following Site Manager procedure to supply the address preﬁx.

You do this System responds

Site Manager Procedure

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Preﬁxes. The IPv6 Preﬁxes window opens.

4. Set the Interface Preﬁx parameter. Click on Help or see the parameter description on page A-11.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

Conﬁguration Manager window.

3-34 118428-A Rev. A

Specifying the Length of the Preﬁx

An address preﬁx can be 3 to 128 bits long. You can use the following Site Manager procedure to specify the length of this

address preﬁx.

Site Manager Procedure

You do this System responds

Configuring and Customizing IPv6

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Preﬁxes. The IPv6 Preﬁxes window opens.

4. Set the Preﬁx Length parameter . Click on Help or see the parameter description on page A-11.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

Conﬁguration Manager window.

118428-A Rev. A 3-35

Configuring IPv6 Services

Specifying a Routing Preference

The default routing preference value is 15 (most preferred). You can use the following Site Manager procedure to specify a routing preference

value from 1 to 15.

You do this System responds

Site Manager Procedure

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Preﬁxes. The IPv6 Preﬁxes window opens.

4. Set the Routing Preference parameter. Click on Help or see the parameter description on page A-12.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

Conﬁguration Manager window.

3-36 118428-A Rev. A

Specifying a Cost

The default cost of an address preﬁx is 1. You can use the following Site Manager procedure to specify a cost from 1 to 15.

You do this System responds

Configuring and Customizing IPv6

Site Manager Procedure

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Preﬁxes. The IPv6 Preﬁxes window opens.

4. Set the Preﬁx Cost parameter. Click on Help or see the parameter description on page A-12.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

Conﬁguration Manager window.

118428-A Rev. A 3-37

Configuring IPv6 Services

Conﬁguring the Preﬁx for On-Link Determination

By default, an address preﬁx can be used for on-link determination. You can use the following Site Manager procedure to disable and reenable this

feature.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Preﬁxes. The IPv6 Preﬁxes window opens.

4. Set the On Link Flag parameter. Click on Help or see the parameter description on page A-12.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

Conﬁguration Manager window.

3-38 118428-A Rev. A

Enabling Autonomous Address Conﬁguration

By default, this preﬁx can be used for autonomous address conﬁguration -- that is, to form a local interface address.

You can use the following Site Manager procedure to disable and reenable this feature.

Site Manager Procedure

You do this System responds

Configuring and Customizing IPv6

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Preﬁxes. The IPv6 Preﬁxes window opens.

4. Set the Autonomous Preﬁx Flag parameter. Click on Help or see the parameter description on page A-13.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

Conﬁguration Manager window.

118428-A Rev. A 3-39

Configuring IPv6 Services

Supplying a Preferred Lifetime Value

The referred lifetime value indicates the length of time in seconds (relative to the time the router advertisement is sent) that this preﬁx will remain preferred -- that is, the time until deprecation.

The default lifetime, 0xffffffff (-1), represents inﬁnity. IPv6 places this value in the preferred lifetime ﬁeld in the preﬁx information

option of a router advertisement. When the preferred lifetime expires, the address generated from a deprecated

preﬁx should no longer be used as a source address in new communications. However, packets received on such an interface are processed as expected.

You can use the following Site Manager procedure to supply a preferred lifetime value.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Preﬁxes. The IPv6 Preﬁxes window opens.

4. Set the Relative Preferred Lifetime parameter. Click on Help or see the parameter description on page A-13.

5. Click on Apply, and then click on Done. Site Manager returns you to the

3-40 118428-A Rev. A

The Protocols menu opens.

Conﬁguration Manager window.

Supplying a Valid Lifetime Value

The valid lifetime value indicates the length of time in seconds (relative to the time the router advertisement is sent) that this preﬁx remains valid.

The default lifetime, 0xffffffff (-1), represents inﬁnity. IPv6 places this value in the valid lifetime ﬁeld in the preﬁx information option of

router advertisements. The address generated from an invalidated preﬁx should not appear as the

destination or source address of a packet. You can use the following Site Manager procedure to supply a valid lifetime

value.

You do this System responds

Configuring and Customizing IPv6

Site Manager Procedure

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Preﬁxes. The IPv6 Preﬁxes window opens.

4. Set the Relative Valid Lifetime parameter. Click on Help or see the parameter description on page A-14.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

Conﬁguration Manager window.

118428-A Rev. A 3-41

Configuring IPv6 Services

Customizing IPv6 Neighbor Discovery

For an overview, see “Neighbor Discovery” on page 1-27. When you conﬁgure IPv6 on an interface, neighbor discovery is automatically

added to the interface. You customize neighbor discovery by modifying neighbor discovery parameters as described under the following topics:

Topic Page

Enabling and Disabling Neighbor Discovery 3-43 Controlling Router Advertisements 3-44 Controlling Address Autoconﬁguration 3-45 Controlling Nonaddress Autoconﬁguration 3-46 Specifying a Neighbor Reachability Time 3-47 Specifying a Retransmission Time For Neighbor Solicitations 3-48 Specifying a Maximum Hop Limit for ND Advertisements 3-49 Specifying a Minimum Time for Unsolicited Advertisements 3-50 Specifying a Maximum Time for Unsolicited Advertisements 3-51 Specifying a Lifetime for the Default Router 3-52 Conﬁguring Address Duplication Detection 3-53

3-42 118428-A Rev. A

Enabling and Disabling Neighbor Discovery

By default, neighbor discovery is enabled on the interface. You can use the following Site Manager procedure to change the state of neighbor

discovery as required.

Site Manager Procedure

You do this System responds

Configuring and Customizing IPv6

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Neighbor Discovery. The IPv6 Neighbor Discovery window

4. Set the Enable parameter. Click on Help or see the parameter description on page A-14.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

opens.

Conﬁguration Manager window.

118428-A Rev. A 3-43

Configuring IPv6 Services

Controlling Router Advertisements

An IPv6 router receives ND solicitations messages from hosts on local networks. The router responds by returning a unicast route advertisement message.

In addition to these responses, an IPv6 router can also send router advertisements periodically on the interface to local multicast groups, whether or not they receive solicitations.

You can use the following Site Manager procedure to control whether or not IPv6 sends periodic route advertisements on the interface.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Neighbor Discovery. The IPv6 Neighbor Discovery window

4. Set the Router Advertisement parameter. Click on Help or see the parameter description on page A-14.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

opens.

Conﬁguration Manager window.

3-44 118428-A Rev. A

Controlling Address Autoconﬁguration

Using the router advertisement that it sends in response to a solicitation message from a host, an IPv6 router can control whether the host uses stateful or stateless autoconﬁguration.

By default, the router instructs the host to use stateless autoconﬁguration. The following Site Manager procedure lets you conﬁgure IPv6 to instruct hosts to

use the administered (stateful) protocol for address autoconﬁguration in addition to any addresses autoconﬁgured using stateless address autoconﬁguration.

Site Manager Procedure

You do this System responds

Configuring and Customizing IPv6

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Neighbor Discovery. The IPv6 Neighbor Discovery window

4. Set the Managed Address Conﬁguration parameter. Click on Help or see the parameter description on page A-15.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

opens.

Conﬁguration Manager window.

118428-A Rev. A 3-45

Configuring IPv6 Services

Controlling Nonaddress Autoconﬁguration

Turn the Managed Non-Address ﬂag on if you want hosts to use the administered (stateful) protocol for autoconﬁguration of nonaddress information.

You can use the following Site Manager procedure to set the nonaddress ﬂag as required.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Neighbor Discovery. The IPv6 Neighbor Discovery window

4. Set the Managed Non-Address parameter. Click on Help or see the parameter description on page A-15.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

opens.

Conﬁguration Manager window.

3-46 118428-A Rev. A

Specifying a Neighbor Reachability Time

The neighbor reachability time is the number of milliseconds (ms) that a node assumes a neighbor is reachable after having receiv ed a reachability conﬁrmation. By default, the router does not specify a reachability time (indicated by a value of 0).

You can use the following Site Manager procedure to specify a neighbor reachability time.

Site Manager Procedure

You do this System responds

Configuring and Customizing IPv6

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Neighbor Discovery. The IPv6 Neighbor Discovery window

4. Set the Reachable Time parameter. Click on Help or see the parameter description on page A-15.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

opens.

Conﬁguration Manager window.

118428-A Rev. A 3-47

Configuring IPv6 Services

Specifying a Retransmission Time For Neighbor Solicitations

The retransmission time for neighbor solicitations is the number of milliseconds between retransmitted neighbor solicitation messages.

The default value is 0, indicating that the retransmission time is unspeciﬁed (by this router).

You can use the following Site Manager procedure to specify a retransmission time for neighbor solicitations.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Neighbor Discovery. The IPv6 Neighbor Discovery window

4. Set the Retransmission Time parameter. Click on Help or see the parameter description on page A-16.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

opens.

Conﬁguration Manager window.

3-48 118428-A Rev. A

Configuring and Customizing IPv6

Specifying a Maximum Hop Limit for ND Advertisements

The default maximum hop limit for ND advertisements is 64 hops. You can use the following Site Manager procedure to specify a maximum hop

limit from 0 to 255 hops

You do this System responds

Site Manager Procedure

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Neighbor Discovery. The IPv6 Neighbor Discovery window

4. Set the Maximum Hop Limit parameter. Click on Help or see the parameter description on page A-16.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

opens.

Conﬁguration Manager window.

118428-A Rev. A 3-49

Configuring IPv6 Services

Specifying a Minimum Time for Unsolicited Advertisements

The minimum time for unsolicited advertisements is the minimum rate (in seconds) at which the router can send unsolicited multicast router advertisements on this interface.

The default minimum time is 200 seconds. The allowable range is 3 to 1350 seconds.

You can use the following Site Manager procedure to specify a minimum time for unsolicited advertisements.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Neighbor Discovery. The IPv6 Neighbor Discovery window

4. Set the Minimum Multicast parameter. Click on Help or see the parameter description on page A-16.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

opens.

Conﬁguration Manager window.

3-50 118428-A Rev. A

Configuring and Customizing IPv6

Specifying a Maximum Time for Unsolicited Advertisements

The maximum time for unsolicited advertisements is the maximum rate (in seconds) at which the router can send unsolicited multicast router advertisements on this interface.

The default maximum time is 600 seconds. The allowable range is 4 to 1800 seconds.

You can use the following Site Manager procedure to set the maximum time for unsolicited advertisements.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Neighbor Discovery. The IPv6 Neighbor Discovery window

4. Set the Maximum Multicast parameter. Click on Help or see the parameter description on page A-17.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

opens.

Conﬁguration Manager window.

118428-A Rev. A 3-51

Configuring IPv6 Services

Specifying a Lifetime for the Default Router

By default, the default router has a lifetime of 1800 seconds. The allowable lifetime range is 0 to 9000 seconds.

You can use the following Site Manager procedure to specify a lifetime for the default router.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Neighbor Discovery. The IPv6 Neighbor Discovery window

4. Set the Default Lifetime parameter. Click on Help or see the parameter description on page A-17.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

opens.

Conﬁguration Manager window.

3-52 118428-A Rev. A

Conﬁguring Address Duplication Detection

By default, the router sends a single neighbor solicitation message (with no follow-up retransmission) while performing duplicate address detection on a tentative address.

You can use the following Site Manager procedure to supply a value from 0 to 10, where 0 indicates that no duplicate address detection needs to be performed.

Site Manager Procedure

You do this System responds

Configuring and Customizing IPv6

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Neighbor Discovery. The IPv6 Neighbor Discovery window

4. Set the Duplicate Address Detection parameter. Click on Help or see the parameter description on page A-17.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

opens.

Conﬁguration Manager window.

118428-A Rev. A 3-53

Configuring IPv6 Services

Deﬁning an IPv6 Adjacent Node

An adjacent node is a device attached to a local network. You deﬁne an adjacent node by supplying information and setting values as described under the following topics:

Topic Page

Enabling and Disabling the Adjacent Node Deﬁnition 3-55 Supplying the Physical Address of the Adjacent Node 3-56 Specifying the Link Layer Encapsulation Type 3-57 Specifying a Route Preference Value 3-58 Specifying the Cost 3-59 Supplying the WAN Address of the Adjacent Node 3-60

3-54 118428-A Rev. A

Configuring and Customizing IPv6

Enabling and Disabling the Adjacent Node Deﬁnition

By default, the adjacent node deﬁnition that you are creating is enabled on the router.

You can use the following Site Manager procedure to disable and reenable the adjacent node deﬁnition as required.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Adjacent Nodes. The IPv6 Adjacent Nodes window opens.

4. Set the Enable parameter. Click on Help or see the parameter description on page A-18.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

Conﬁguration Manager window.

118428-A Rev. A 3-55

Configuring IPv6 Services

Supplying the Physical Address of the Adjacent Node

For a frame relay PVC, the physical address of the adjacent node is a 32-bit DLCI. For an ATM PVC this address is a 32-bit VCID which has circuit VCI in its most signiﬁcant 20 bits and VPI in 12 least signiﬁcant bits.

You can use the following Site Manager procedure to supply the physical address of this adjacent node.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Adjacent Nodes. The IPv6 Adjacent Nodes window opens.

4. Set the Physical Address parameter. Click on Help or see the parameter description on page A-18.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

Conﬁguration Manager window.

3-56 118428-A Rev. A

Specifying the Link Layer Encapsulation Type

By default, the link layer encapsulation type deﬁned for the adjacent node is “other.”

The link layer encapsulation type used by the adjacent node depends on the type of network on which the node is located. You can use the following Site Manager procedure to specify SNAP encapsulation for a IEEE 802.2 network, PDN encapsulation for X.25 PDN, and WAN for frame relay SVC and ATM SVC.

Specify Subnetwork Access Protocol (SNAP) encapsulation only if IEEE 802.2 encapsulation is to be used over CSMA/CD or DS1 links.

You can use the following Site Manager procedure to specify a link layer encapsulation type.

Site Manager Procedure

You do this System responds

Configuring and Customizing IPv6

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Adjacent Nodes. The IPv6 Adjacent Nodes window opens.

4. Set the Link Layer Encapsulation parameter. Click on Help or see the parameter description on page A-18.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

Conﬁguration Manager window.

118428-A Rev. A 3-57

Configuring IPv6 Services

Specifying a Route Preference Value

By default, this deﬁnition has a preference value of 15 (most preferred). You can use the following Site Manager procedure to specify a preference from 0

to 15.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Adjacent Nodes. The IPv6 Adjacent Nodes window opens.

4. Set the Routing Preference parameter. Click on Help or see the parameter description on page A-19.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

Conﬁguration Manager window.

3-58 118428-A Rev. A

Specifying the Cost

By default, this adjacent node deﬁnition has a cost of 1. The cost value you specify is used as the RIP metric. You can use the following Site Manager procedure to specify a cost value from

1 to 15.

You do this System responds

Configuring and Customizing IPv6

Site Manager Procedure

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Adjacent Nodes. The IPv6 Adjacent Nodes window opens.

4. Set the Cost parameter. Click on Help or see the parameter description on page A-19.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

Conﬁguration Manager window.

118428-A Rev. A 3-59

Configuring IPv6 Services

Supplying the WAN Address of the Adjacent Node

IPv6 uses a WAN address (for example, an X.121 or E.164 address) to establish an SVC to the adjacent host. For an X.25 PVC, this parameter contains the logical channel number (LCN) of the permanent virtual circuit (PVC) encoded as an X.121 address up to 4 octets in length.

You can use the following Site Manager procedure to specify the WAN address of the adjacent node

You do this System responds

Site Manager Procedure

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Adjacent Nodes. The IPv6 Adjacent Nodes window opens.

4. Set the X.121 Address parameter. Click on Help or see the parameter description on page A-19.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

Conﬁguration Manager window.

3-60 118428-A Rev. A

Conﬁguring an IPv6 Static Route

A static route is a manually conﬁgured route that speciﬁes the next hop a datagram must follow to reach the destination expressed in the destination address.

You conﬁgure an IPv6 static route by setting parameters as described under the following topics:

Topic Page

Associating the Static Route with an Interface 3-61 Enabling and Disabling the Static Route 3-62 Supplying the Destination IPv6 Address Preﬁx 3-63 Specifying the Preﬁx Length 3-64 Supplying the IPv6 Next-Hop Address 3-65 Specifying a Route Preference Value 3-66 Specifying the Cost 3-67

Configuring and Customizing IPv6

Associating the Static Route with an Interface

You can use the following Site Manager procedure to associate the static route with an interface.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Static Routes. The IPv6 Static Routes window opens.

4. Click on Add. The Values Selection window opens.

5. Choose the IPv6 index of the interface to which you want to add the preﬁx.

6. Click on Apply, and then click on Done. Site Manager returns you to the

118428-A Rev. A 3-61

The Protocols menu opens.

The IPv6 Preﬁxes window reopens.

Conﬁguration Manager window.

Configuring IPv6 Services

Enabling and Disabling the Static Route

By default, the static route you conﬁgure is enabled. You can use the following Site Manager procedure to disable and reenable the

static route.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Static Routes. The IPv6 Static Routes window opens.

4. Set the Enable parameter. Click on Help or see the parameter description on page A-20.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

Conﬁguration Manager window.

3-62 118428-A Rev. A

Supplying the Destination IPv6 Address Preﬁx

You can use the following Site Manager procedure to specify the destination address preﬁx for the static route.

Site Manager Procedure

You do this System responds

Configuring and Customizing IPv6

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Static Routes. The IPv6 Static Routes window opens.

4. Set the Preﬁx parameter. Click on Help or see the parameter description on page A-20.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

Conﬁguration Manager window.

118428-A Rev. A 3-63

Configuring IPv6 Services

Specifying the Preﬁx Length

You can use the following Site Manager procedure to specify the length (in bits) of the destination address preﬁx.

You do this System responds

Site Manager Procedure

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Static Routes. The IPv6 Static Routes window opens.

4. Set the Preﬁx Length parameter . Click on Help or see the parameter description on page A-20.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

Conﬁguration Manager window.

3-64 118428-A Rev. A

Supplying the IPv6 Next-Hop Address

You can use the following Site Manager procedure to supply the IPv6 address of next-hop node.

Site Manager Procedure

You do this System responds

Configuring and Customizing IPv6

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Static Routes. The IPv6 Static Routes window opens.

4. Set the Next Hop Address parameter. Click on Help or see the parameter description on page A-21.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

Conﬁguration Manager window.

118428-A Rev. A 3-65

Configuring IPv6 Services

Specifying a Route Preference Value

By default, the static route has a preference value of 15 (most preferred). You can use the following Site Manager procedure to specify a preference value

from 0 to 15.

Site Manager Procedure

You do this System responds

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Static Routes. The IPv6 Static Routes window opens.

4. Set the Route Preference parameter. Click on Help or see the parameter description on page A-21.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

Conﬁguration Manager window.

3-66 118428-A Rev. A

Specifying the Cost

By default, the static route has a cost of 1. You can use the following Site Manager procedure to specify a cost from 0 to 15.

You do this System responds

Configuring and Customizing IPv6

Site Manager Procedure

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List Static Routes. The IPv6 Static Routes window opens.

4. Set the Cost parameter. Click on Help or see the parameter description on page A-21.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

Conﬁguration Manager window.

118428-A Rev. A 3-67

Configuring IPv6 Services

Conﬁguring a Static Default Route

A default route entry in the routing table has a destination address of 0. If the router is unable to match the destination address on a received packet with a destination address in the routing table, the router uses the default route.

You can use Site Manager to conﬁgure a static default route.

1. Add the static route to the IP interface that you want to use for the

default route.

See “Conﬁguring an IPv6 Static Route” on page 3-61.

2. In the List Static Routes window, set the Preﬁx Length parameter to 0.

Conﬁguring a Black Hole

A router that advertises an aggregate route uses a mechanism called a black hole to discard packets that match the aggregate address but that do not match any of the explicit routes.

You can use Site Manager to conﬁgure a black hole.

1. Conﬁgure a static route for the destination address you want to discard.

2. In the List Static Routes window, click on Black Hole.

3-68 118428-A Rev. A

Chapter 4

Conﬁguring RIPv6

You conﬁgure RIPv6 by setting parameters as described under the following topics:

Topic Page

Enabling and Disabling RIP 4-2 Supplying RIP Updates 4-3 Receiving RIP Updates 4-4 Supplying a Default Route 4-5 Listening for a Default Route 4-6 Specifying the Update Mode 4-7 Specifying an Interval for Update Broadcasts 4-8 Specifying a Timeout Period for an Unreachable Network 4-9 Specifying a Hold Down Time 4-10 Sending Triggered Updates 4-11 Specifying the RIPv6 Diameter 4-12 Conﬁguring RIPv6 Policies 4-13

118428-A Rev. A 4-1

Configuring IPv6 Services

Enabling and Disabling RIP

When you add RIPv6 to an IPv6 interface, RIPv6 is enabled by default. You can use the following Site Manager procedure to disable and reenable IPv6

on the interface as required.

You do this System responds

Site Manager Procedure

1. In the Conﬁguration Manager window, choose Protocols.

2. Choose IPv6. The IPv6 menu opens.

3. Choose List RIP Interfaces. The IPv6 RIP Interfaces window opens.

4. Set the Enable parameter. Click on Help or see the parameter description on page A-22.

5. Click on Apply, and then click on Done. Site Manager returns you to the

The Protocols menu opens.

Conﬁguration Manager window.

4-2 118428-A Rev. A

Avaya IPv6 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Contents

Figures

About This Guide

Before You Begin

Conventions

Acronyms

Ordering Bay Networks Publications

Bay Networks Customer Service

How to Get Help

IPv6 Header

IPv6 Addresses

Type Address prefix

Interface ID

Anycast Address

Multicast Address

IPv4-Compatible Address

Address Formats

Tunnels

Static IPv4 Tunnel

Automatic IPv4 Tunnel

Semiautomatic IPv4 Tunnel

IPv6 Tunnels

Packet Forwarding

IPv6 Extension Headers

Neighbor Discovery

RIPv6

Starting IPv6

Adding Neighbor Discovery to an IPv6 Interface

Adding RIPv6 to an IPv6 Interface

Customizing IPv6 Globally

Enabling and Disabling Global IP

Supplying a Value for the Hop Limit Field

Specifying a Minimum Link MTU Size

Enabling and Disabling MTU Path Discovery

Specifying an MTU Path Timeout Period

Customizing an IPv6 Interface

Enabling and Disabling the Interface

Supplying a Description of the Interface

Supplying an Interface ID

Specifying the Circuit Name

Specifying the Link Layer Address

Specifying an MTU Size for the Link

Specifying the Size of the Forwarding Table

Enabling and Disabling Redirect Messages

Enabling and Disabling TR End Station Support

Specifying an SMDS Group Address

Specifying Frame Relay Broadcast DLCI

Specifying Frame Relay Multicast DLCI

Specifying a Tunnel Type

Specifying a Local IPv4 Address

Specifying a Remote IPv4 Address

Specifying a Local IPv6 Index

Specifying a Remote IPv6 Address

Specifying a Routing Preference

Specifying a Cost

Supplying a Preferred Lifetime Value

Supplying a Valid Lifetime Value

Customizing IPv6 Neighbor Discovery

Enabling and Disabling Neighbor Discovery

Controlling Router Advertisements

Specifying a Neighbor Reachability Time

Specifying a Retransmission Time For Neighbor Solicitations

Specifying a Maximum Hop Limit for ND Advertisements

Specifying a Minimum Time for Unsolicited Advertisements

Specifying a Maximum Time for Unsolicited Advertisements

Specifying a Lifetime for the Default Router

Supplying the Physical Address of the Adjacent Node

Specifying the Link Layer Encapsulation Type

Specifying a Route Preference Value

Specifying the Cost

Supplying the WAN Address of the Adjacent Node

Associating the Static Route with an Interface

Enabling and Disabling the Static Route

Supplying the IPv6 Next-Hop Address

Specifying a Route Preference Value

Specifying the Cost