Motorola P120 User Manual
Lucent Technologies
User’s Guide
C
AJUN
P120
10/100/1000 S
TANDALONE
S
WITCH
Catalog No. 130017 Rev. B. March 2000
Preface
Quick Start
This section provides an overview of the steps required to get your Cajun P120 up
and running. Please refer to the relevant sections in the User’s Guide for further
details.
Cajun P120 User’s Guide I
Quick Start
II Cajun P120 User’s Guide
Contents
Quick Start................................................................................................ I
List of Figures......................................................................................... vii
List of Tables............................................................................................ ix
Chapter 1
Overview.................................................................................................. 1
Summary of Features............................................................................... 1
Cajun P120 Functionality ........................................................................ 3
Switched Ports ...............................................................................3
Layer 2 Security ............................................................................. 3
Virtual LANs ..................................................................................4
Port-based Vlans ............................... ...... ....... ...... ....... ...... ... 4
VLAN/Priority Tagging .........................................................4
Full Duplex ....................................................................................4
Auto-negotiation ............................................................................5
Port Mirroring ................................................................................5
FEFI ...................... .......................... .......................... ...................... 5
Address Aging ................................................................................5
Spanning Tree ................................................................................6
Redundant Links ............................................................................6
Congestion Control (Flow Control) ...............................................6
Link Aggregation ............................................................................6
Early Packet Drop (HOLB-P) .........................................................7
Priorities ...................... .......................................................... ......... 7
IP Multicast Filtering ......................................................................7
Switch Management ................................................................................ 8
SNMP Agent ...................................................................................8
Cajun P120 Software ........................... ....... ...... .............................8
Configuration Upload/Download ..................................................8
Chapter 2
Chapter 3
Cajun P120 User’s Guide i
Cajun P120 Front and Back Panels.......................................................... 9
Cajun P120 Front Panel ........................................................................... 9
Applications ........................................................................................... 13
Application 1.......................................................................................... 13
Application 2.......................................................................................... 14
Application 3.......................................................................................... 15
Chapter 4 Installation and Setup ............................................................................ 17
Positioning.............................................................................................. 17
Rack Mounting ....... ...... ....................................... ...... ....... ...... ....... ...... ... 17
Powering On .......................................................................................... 18
Installing Expansion Modules................................................................ 19
Configuring the Switch .......................................................................... 20
Cajun P120 Default Settings ........................................................20
Switch Settings ...................................................................20
Port Settings .......................................................................21
Cabling ......................................................................................... 22
Connecting to the Serial Ports ...........................................23
Chapter 5 Introduction to the Command Line Interfaces....................................... 25
Switching Between CLI Versions ........................................................... 25
Establishing a Serial Connection for Configuration ...................... ...... ... 25
Establishing a Telnet Session (Ethernet port or modem)....................... 26
Assigning Cajun P120’s IP Address ..............................................27
Changing the IP Address using the Command Line Interface
(CLI, Terminal Emulation) ................................ ....... ...... ....27
Navigation, Cursor Movement and Shortcuts........................................ 29
Getting Help ........................................................................................... 29
Command Syntax................................................................................... 30
Conventions Used ........................................................................30
Chapter 6 Legacy CLI (Command Line Interface) .................................................. 31
Running the CLI..................................................................................... 32
Easily Configuring the Mandatory Parameters ............................32
Using the Simple-Setup Command ....................................32
Security Levels ....................................................................................... 36
Entering the Privileged Level .......................................................36
Exiting the Privileged Level .........................................................36
Changing the Privileged Level Password ......................................37
Command Syntax................................................................................... 38
Command Abbreviations .............................................................38
Command Line Prompt ................................................................38
Saving and Exiting ................................................................................. 39
Normal Level Commands....................................................................... 39
Privileged Level Commands ................................................................... 41
Sample Session .............................................................................43
Subcommands ....................... ...................................... ................. 43
List Subcommand [list] .......................................................43
Index_value Subcommand <Index_value> .......................44
Repetitive Command Mode [r] ....................................... .... 44
ii Cajun P120 User’s Guide
Using the SHOW Command ........................................................45
Listing the Groups You Can Set ...................................................45
Using the SET Command .............................................................46
Using the SHPORT Command .....................................................46
Using the VLANTAB Command ...................................................47
Using the SHLAG Command .......................................................48
Configuration Upload and Download Commands .......................49
Copy Command ......................... ....... ...... ...........................49
Security Commands .....................................................................50
Lock Port Command ..........................................................50
Unlock Port Command ..................................................... .50
Add MAC Command .................................................. ...... .50
Delete MAC Command ......................................................51
Groups, Parameters and Default Settings............................................... 52
How Groups are Organized - Finding Parameters .......................52
MIB-II System Group (MIB-II SYST) ...........................................53
CAM Configuration Group (CAM) ..............................................53
IP Configuration Group (IP) ........................................................54
IP-Multicast System Group (IP-MULTICAST) .............................55
Spanning Tree Group (STA-GEN) ................................................57
Spanning Tree Group (STA-PORT) ..............................................58
P120 Port Configuration Group (P120) .......................................59
Expansion Module Group (X120xx) ............................................62
Agent VLAN Group (VLAN) ........................................................63
Port Mirroring Group (COPY-PORT) ........................................... 63
TFTP Configuration Group (TFTP) ...............................................64
SNMP Configuration Group (SNMP) ...........................................65
Things to Keep in Mind ...............................................................66
Error Messages .............................................................................66
Chapter 7 Cajun Campus CLI (Command Line Interface) ..................................... 67
Commands............................................................................................. 68
How Commands are Organized ...................................................68
Sample Session ........................ ...... ...... ....... ...... ....... ...... ....... ...... . 71
User Level Commands ........................................................................... 72
Password Commands ...................................................................72
Set Password Command ....................................................72
Set Enablepass Command ..................................................72
Set Techpass Command .....................................................73
Set Defpass Command .......................................................73
Enable Command ........................................................................74
Enable Command ..............................................................74
Show Commands .........................................................................74
Show IP Route Command .................................................74
Show System Command ...................................................74
Cajun P120 User’s Guide iii
Show Image Version Command ........................................75
Show SNMP Command .....................................................75
Show Interface Command .................................................76
Show Port Command .........................................................76
Show Module Command ...................................................78
Show Port Flowcontrol Command ....................................79
Show Cam Command ........................................................80
Show Port Mirror Command .............................................81
Show Download Status Command ....................................81
Privileged Level Commands ................................................................... 82
Security Commands .....................................................................82
Lock Port Command ..........................................................82
Unlock Port Command ......................................................82
Add MAC Command .........................................................82
Delete MAC Command ......................................................83
Configuration Upload and Download Commands .......................83
Copy Command .................................................................83
Returning to Normal Mode ..........................................................84
Disable Command ..............................................................84
Downloading a Software Image ...................................................84
Download Command .........................................................84
Set Commands .............................................................................86
Set Logout Command ........................................................86
Set Port Mirror Command .................................................86
Set Port Flow Control Command .......................................87
Set IP Route Command ......................................................87
Set License Command ........................................................88
Set SNMP Community Command .....................................88
Set SNMP Trap Command .................................................89
Set System Location Command .........................................89
Set System Name Command .............................................89
Set System Contact Command ..........................................89
Set Interface Command .....................................................90
Set Port Level Command ...................................................90
Set Port Negotiation Command .........................................91
Set Port Enable Command .................................................92
Set Port Disable Command ................................................92
Set Port Speed Command ..................................................92
Set Port Duplex Command ................................................93
Set Port Flowcontrol Command ........................................94
Set Vlan Command ............................................................95
Clear Commands ..........................................................................96
Clear Port Mirror Command ..............................................96
Clear IP Route Command ..................................................96
iv Cajun P120 User’s Guide
Clear SNMP Trap Command ..............................................97
Clear Vlan Command ........................................................97
Clear Cam Command ........................................................98
Reset Commands .........................................................................99
Reset Command .................................................................99
Reset System Command ....................................................99
Show License Command ...................................................99
Error Messages ...........................................................................100
Appendix A Specifications................................................................................................... 101
Cajun P120 Switch............................................................................... 101
Physical ...................................................................................... 101
Power Requirements ..................................................................101
Environmental ......................... .................................................. 101
Safety ......................................................................................... 101
EMC Emissions ........... ...... ....... ...... ...... ....... ...... ....... ...... ............102
Emissions ......................................................................... 102
Immunity .......................................... ............................... 102
Interfaces .............. ............. ............. ............. ............. ............. .....102
Standards Compliance ...............................................................102
MTBF ......................................................................................... 102
Expansion Sub-modules ...................................................................... 103
Gigabit Ethernet Expansion Sub-module ..................................103
Laser Safety ......................................................................103
Laser Classification ...........................................................103
Usage Restriction .............................................................104
Laser Data ........................................................................104
Fast Ethernet Fiber Expansion Sub-module ..............................104
Ethernet/Fast Ethernet Expansion Sub-module ........................104
GBIC Expansion Sub-module ....................................................105
Safety Information ........................................................... 105
Laser Classification ...........................................................105
Usage Restriction .............................................................105
Lucent Approved GBIC Transceivers ...............................106
Specifications ................................................................... 106
Cajun P120 User’s Guide v
Appendix B Software Download ......................................................................................... 109
Download Procedure............................................................................ 109
Preparing the File for Download ................................................109
Download the Software Using Cajun P120 Download Manager 109
Download the Software Using TFTP (via the CLI) .....................111
Creating the “.lst” file .................................................................111
Configuring the Cajun P120 TFTP parameters ...........................112
Start the Software Download .....................................................112
Reset the Cajun P120 .................................................................112
Appendix C Cajun P120 Standalone Manager ................................................................... 113
System Requirements........................................................................... 113
Installation.............. ...... ....... ...... ....... ...................................... ....... ...... . 113
Documentation and Online Help ......................................................... 114
Software Download.............................................................................. 114
vi Cajun P120 User’s Guide
List of Figures
Figure 2.1 Cajun P120 Front Panel........................................................ 9
Figure 2.2 Cajun P120 LEDs................................................................10
Figure 2.3 Cajun P120 Back Panel.......................................................10
Figure 3.1 Cajun P120 and P110 at the edge with a Cajun P550
Figure 3.2 Cajun P120 and P110 at the Edge with a Cajun M770
Figure 3.3 Cajun P120 and P110 on the floors of a Small/Medium
Figure 4.1 Cajun P120 Rack Mounting ...............................................18
Figure B.1 TFTP Software Download Procedure - Overview.............111
Backbone...........................................................................13
Switch Backbone ...............................................................14
size Enterprise (SME) network with a Cajun P220G and
Cajun P110 Backbone........................................................15
Cajun P120 User’s Guide vii
List of Figures
viii Cajun P120 User’s Guide
List of Tables
Table 2.1 Cajun P120 LED Descriptions ............................................10
Table 2.2 Cajun P120 <- -> Select buttons.........................................12
Table 4.1 Default Switch Settings.......................................................20
Table 4.2 Default Port Settings...........................................................21
Table 4.3 Gigabit Ethernet Cabling ....................................................22
Table 4.4 Pinout of the Serial Interface (RJ-45) and the
Connection to SLIP Modem (D9) ......................................23
Table 5.1 Navigation, Cursor Movement and Shortcuts....................29
Table 6.1 Normal Level Commands ..................................................39
Table 6.2 Privileged Level Commands ..............................................41
Table 6.3 VLANTAB Parameters.........................................................48
Table 6.4 SHLAG Parameters .............................................................48
Table 6.5 Parameter Summary...........................................................52
Table 6.6 CAM Group Parameters......................................................53
Table 6.7 IP Group Parameters...........................................................54
Table 6.8 IP-multicast Group Parameters ..........................................55
Table 6.9 STA-GEN Group Parameters...............................................57
Table 6.10 STA-PORT Group Parameters.............................................58
Table 6.11 P120 Group Parameters......................................................59
Table 6.12 Module Name Abbreviations..............................................62
Table 6.13 VLAN Group Parameters ....................................................63
Table 6.14 COPY-PORT Group Parameters..........................................63
Table 6.15 TFTP Group Parameters......................................................64
Table 6.16 SNMP Group Parameters....................................................65
Table 7.1 User Level Commands........................................................68
Table 7.2 Privileged Level and Security Commands (this level
includes all the show commands from the previous level)69
Table 7.3 Mean Time Between Failure (MTBF) for all Cajun P120
Configurations ................................................................. 102
Table A.1 Gigabit Ethernet Expansion Units ....................................103
Table A.2 Fiber Fast Ethernet Expansion Sub-module.....................104
Table A.3 Ethernet/Fast Ethernet Expansion Sub-module...............104
Cajun P120 User’s Guide ix
List of Tables
x Cajun P120 User’s Guide
Chapter 1
Overview
The Cajun P120 is a standalone 10/100 Mbps Ethernet workgroup switch with a
range of optional expansion modules that provide additional Ethernet, Fast
Ethernet and Gigabit Ethernet connectivity.
The Cajun P120 is fully compatible with IEEE standards for VLAN Tagging, Gigabit
Ethernet, flow control, priority queuing and LAG (Link Aggregate Grouping - also
known as Trunking). The full standards-compliance, combined with autonegotiation (10/100) makes expanding your network to match your company’s
growing needs “plug and play” simple.
Summary of Features
• Basic module providing 24 x 10/100BaseTX ports
• Expansion modules:
— 2 x 1000Base-SX ports named Cajun X120S2
— 2 x 1000Base-LX ports named Cajun X120L2
— 1 x 1000Base-SX ports named Cajun X120S1
— 1 x 1000Base-LX ports named Cajun X120L1
— 2 x 100Base-F ports named Cajun X120F2
— 8 x 10/100Base-TX ports named Cajun X120T8
— 2 x Gigabit GBIC named Cajun X120G2
— 2 x 1000BaseT named Cajun X120GT2 (future).
• Full and half duplex on all 10/100 and 100 Mbps ports
• 2 fans included for redundancy
• RS-232 interface (RJ-45) on front panel (for Terminal set-up)
• RS-232 interface for SLIP on back panel
• Standard Auto-Negotiation advertising the following set of capabilities:
10/100, HDX/FDX
• Support for Port Partition mode
• Back Pressure in HDX mode, activated through Technician CLI only (default is
OFF)
• OpenTrunk™ (Link Aggregation Grouping). Up to four trunks can be
operational at a time – three groups of up to eight 10/100Base-T ports and one
on the expansion modules (two 1000Base-X, two 100Base-FX or up to eight
10/100Base-TX ports on expansion modules), based on one Base-Port per-LAG.
• Per port VLAN number allocation from VLAN number 1 to 3071
• Possibility to assign a dedicated VLAN for the agent, from 1 to 3071, for creating
a virtual side band port for management
Cajun P120 User’s Guide 1
Chapter 1 Overview
• VLAN-Tagging modes: STD IEEE 802.1Q-Tagging. The product identifies and
supports 3071 tagged VLANs.
• Both Priority-per-Port and Priority-per-Packet (by 802.1p) are supported
• Support for IEEE 802.1D standard Spanning Tree Algorithm (STA)
• Port Mirroring support (a single source-destination pair active at a time), and
copying both Rx and Tx port traffic from a source port into the destination port.
• Link Redundancy support – up to 4 pairs
• Aging of MAC addresses
• Built-in SNMP Agent
• Cajun P120 Manager (stand-alone SNMP management) is provided with the
unit without the need for a softwa re management umbrella suite
• Managed by CajunView™ and CajunView Plus
• Supports secure Telnet (2-lev el pa sswo rd access)
• MIB II: System, Interface, SNMP
•Bridge MIB
• IGMP snooping allows dynamic Multicast filtering
• RMON 4 groups: Statistics, History, Alarm, and Events
• Fully featured CLI support
• Port Security
• Configuration Upload/Download activated via CLI and/or Update Master
application
• SMON support: VLAN statistics, Priority statistics, Copy port configuration
2 Cajun P120 User’s Guide
Cajun P120 Functionality
This section describes many of the functions that are supported by the Cajun P120
modules. For the default settings refer to the ”Default Settings” section.
Switched Ports
Switching provides high performance by confining traffic between any pair of ports
to a single path in the fabric, allowing other traffic to move on other paths. The
Cajun P120’s high performance is based on the internal high speed switching fabric
(and a separate control bus) that prevents blocking. The 24 internal ports and
expansion modules inserted into a Cajun P120 enclosure form a single switching
fabric that communicates over that internal high speed switching fabric.
A Cajun P120 switch is functionally equivalent to a standard IEEE 802.1D multiport bridge. It learns source MAC addresses on the fly and stores them, along with
the source port, in a large internal CAM. The efficient forwarding p rocess is based
on the information in the CAM. The Cajun P120 can age CAM entries by erasing
the entries that have not been recently used.
Unicast frames that e nter any s witched por t are st ored and f orwarded t o the spe cific
destination port, thus providing a high-performance path through the switching
fabric. Unknown, Multicast/Broadcast frames are flooded to all ports in the same
VLAN to ensure that they arrive at the proper destination. Frames with errors are
discarded to prevent error flooding.
The Cajun P120 Ethernet ports are 10/100 Mbps auto-negotiating. The Cajun P120
expansion module ports are 10/100Base-TX, 100Base-FX, 1000Base-SX or
1000Base-LX.
Each port is an independent switched port and has the availability of the whole
media bandwidth. The ports are grouped internally. Frames whose source and
destination addresses are in the same group will stay local to that group, thus not
loading the switching fabric at all. The Cajun P120 forwards frames that are not
local to their proper destination through the switching fabric to the end stations, in
a mode transparent to the end sta tions.
Each port may be enabled or disabled by either management, the Spanning Tree
Algorithm (STA) - IEEE 802.1D, or due to the port partition state of the link.
Chapter 1 Overview
Layer 2 Security
The security function detects packets of unknown origin, prevents them from
entering the switch, and alerts the Device Manager in case of such intrusion
attempts. Once a station is registered in a Secured port address table it cannot
communicate via any other port. However, if such a station does try to
communicate via another port, the management will not receive an intrusion
detection warning.
Cajun P120 User’s Guide 3
Chapter 1 Overview
The security commands ar e available in the Cajun Campus CLI, Legacy CLI or via
the Standalone Manager.
Virtual LANs
A Virtual LAN (VLAN) is a group of LAN stations that communicate as if they were
on the same physical segment even though they are located on any port
throughout the network. The main purpose of VLANs is to confine Multicast and
broadcast traffic to particular parts of the network, reduce potential problems such
as broadcast storms and enhance overall performance. Virtual LANs al so simplify
adds, moves, and changes throughout the network, ensuring a higher level of
security.
Cajun P120 allows the network administrator to superimpose a Virtual LAN
structure over the switching fabric by assigning Cajun P120 ports to VLANs.
Initially, all Cajun P120’s ports are assigned the IEEE 802.1Q Default VLAN
(VLAN=1), thus enabling the users to communicate with all other users
immediately after the physical connection is established.
Port-based Vlans
Port-based VLANs are created by assigning the Cajun P120 port to VL ANs . All the
stations connected to that port are members of this VLAN. The VLAN value which
can be set per port is 1-3071 (only values 1-255 can be set in Version 1.0). All the
untagged packets are mapped to the Port VLAN.
VLAN/Priority Tagging
Cajun P120 VLANs may span multiple switches. The VLAN information is conveyed
by one switch to the other by tagging. The Cajun P120 uses the standard IEEE
802.1Q tagging format, thus assuring interoperability with third party switches that
support the standard.
Ports that connect to other Cajun P120 switches, to third party switches, or to
stations that are ‘VLAN aware’, should be configured to support tagging.
The priority field in the Tag is also supported, and tagged packets are forwarded to
the line with the priority value.
Full Duplex
The Cajun P120 supports full duplex mode on all ports. When both the Cajun P120
port and the station at the other end of the link are configured to full duplex, then
frames may be transmitted and received simultaneously which doubles the
bandwidth available on the link.
4 Cajun P120 User’s Guide
Auto-negotiation
Auto-negotiation is a protocol between two link partners that enables a port to
advertise its transmission rate and duplex mode to its partner. Both ports then
operate at the highest common denominator between them. T his saves you from
having to configure the Cajun P120 10/100BASE-TX ports’ speed and duplex mode
to match that of the connected device.
On 1000Base Expansion Sub-module ports, Auto-negotiation controls the Flow
Control Mode (Symmetric/Disabled).
Note: Auto-negotiation works only when both link partners are set to autonegotiation mode. If you connect a NIC (or a Cajun P120 Uplink-100 port) that
does not support autoneg (or autoneg disabled) to a Cajun P120 port, then we
recommend that you manually set both the P120 port and the NIC to the same
speed and duplex mode.
Port Mirroring
The Cajun P120 has a built-in ”mirroring” capability, that allows forwarding of all
the traffic to/from specific ”copy source” to a ”copy destination” (also called a
probe-port or sniffer-port), excluding errors and frames with errors.
When you require detailed information about the traffic at a particular port, rather
than attaching an expensive analyzer to each port (or moving such a probe from
port to port), the network administrator may attach an external probe to any
Cajun P120 port defined as a destination port and analyze any switched port by
mirroring its Rx/Tx traffic to that destination port.
Port mirroring should be activated on ports that belong to the same VLAN.
Chapter 1 Overview
FEFI
The Cajun P120 supports FEFI (Far End Fault Indication) on the 100Base-FX ports.
This enables the Cajun P120 to detect and report a link failure even if it is only a Tx
line failure (while the Rx line is still OK).
When a 100Base-FX port receives a FEFI indication, a switchover to a redundant
link occurs, if there is one assigned to this port. If the port is part of a LAG, then the
traffic from this link will be moved to the other links of the LAG, until the link's
fault status is corrected.
Address Aging
The Cajun P120 supports the aging of addresses in the CAM table.
Cajun P120 User’s Guide 5
Chapter 1 Overview
Spanning Tree
The Cajun P120 implements the IEEE 802.1D Spanning Tree (SPT) algorithm in
order to allow backup paths and prevent loops throughout the Physical LAN. You
should avoid using Spanning Tree when redundant links are defined or Security is
activated.
Redundant Links
A redundant link (or resilient link) enables you to protect critical links and prevent
network downtime if that link fails. Setting up redundancy ensures that should a
main link fail, a standby duplicate link will immediately and automatically take
over the task of the failed link.
You may set a link (between two switched ports) that will only become operational
when the primary link is down. Up to four redundant link pairs can be configured
for each switch.
Avoid using redundant links when Spanning Tree or Security are enabled.
Congestion Control (Flow Control)
Congestion control is a mechanism designed to reduce the loss of frames.
In full-duplex mode the Cajun P120’s congestion control conforms to the IEEE
802.3x (both sides must conform to this Standard), using PAUSE packets to stop
and auto-restart the transmission of the source of the congestion.
In 10/100M half duplex mode, the Cajun P120 supports forward pressure and
backpressure. These mechanisms reduce the load on the switch and free its buffers
more rapidly without frame loss.
Forward pressure helps to free the switch’s transmit buffers more quickly by
limiting the maximum backoff time that a station waits before transmitting after a
collision.
Backpressure prev ents f rame loss by causi ng a carr ier se nse on t he segme nt when a
frame to be received cannot be handled by Cajun P120 because its input buffer is
full.
On 1000Base Expansion Sub-module ports, Auto-negotiation controls the Flow
Control Mode (Symmetric/Disabled).
Link Aggregation
Link aggregation (or a trunk link) is used to increase bandwidth by connecting two
devices, switches or stations via multiple point-to-point links. Link aggregation also
makes the connection more resilient since traffic on a failed link is supported by the
other link(s) in the Link Aggregation Group (LAG). LAG implementation ensures
traffic load balancing between the links of the LAG and allows load sharing for
resiliency if one of the LAG links fails.
6 Cajun P120 User’s Guide
Traffic is distributed between the ports according to the packet s' addresses, which
are learned on the LAG ports using the Round-Robin algorithm. The session’s order
is retained at all times. There is no possibility of Broadcast loops occurring in a LAG.
The LAG is considered a single logical port for the switch and its functionality,
including the Spanning Tree Protocol (STP), where BPDUs are sent only through
one of the LAG ports.
Early Packet Drop (HOLB-P)
This feature prevents incoming frames from being forwarded to ports that are
blocked. Although this leads to a loss of frames, it prevents the entire switched from
becoming blocked.
Priorities
Priorities for queuing may be established to enhance the Quality of Service (QoS).
Each port can be configured for high or low priority. Priority is also supported using
the priority field in tagged packets. The Cajun P120 supports port-based priority
and Standard IEEE 802.1p tagging.
IP Multicast Filtering
IP Multicast allows you to send a single copy of an IP packet to multiple
destinations and can be used for various applications including video streaming and
video conferencing.
The Multicast packet is forwarded from the sender to the recipients, duplicated
when needed by routers along the way and sent to multiple destinations such that
it reaches all the members of the Multicast group. Multicast addresses are a special
kind of IP addresses (class D), each identifying a Multicast group. Stations join and
leave Multicast groups using IGMP. This is a control-plane protocol through which
IP hosts register with their router to receive packets for certain Multicast addresses.
In addition, routers support one or more Multicast routing protocols (e.g. DVMRP,
PIM) that construct Multicast delivery trees on which the Multicast traffic is
forwarded.
On LANs, IP Multicast packets are transmitted in MAC Multicast frames. Traditional
LAN switches flood these Multicast packets like broadcast packets to all stations in
the VLAN. In order to av oid sen ding Multi cast packets where they ar e not required ,
Multicast filtering functions may be added to the Layer 2 switches, as described in
the IEEE standard 802.1D (802.1p). Layer 2 switches capable of Multicast filtering
send the Multicast packets only to ports connecting members of that Multicast
group. This is typically based on IGMP snooping, GMRP or CGMP.
Chapter 1 Overview
Cajun P120 User’s Guide 7
Chapter 1 Overview
Switch Management
You can configure and manage the Cajun P120 using either the Standalone
Cajun P120 Manager supplied (see the Cajun P120 Standalone Manager User Guide),
CajunView, or the text-based Terminal Emulation (see the ”Terminal Emulation”
chapter). Access to Terminal Emulation is via either a serial connection or Telnet.
SNMP Agent
The Cajun P120 is man aged through SNMP, either in-band (by connecting the
manager to any LAN port) or out-of-band using the SLIP port.
The Cajun P120 supports two types of MIBs (Management Information Bases):
proprietary MIBs and standard MIBs.
Cajun P120 Software
The Cajun P120 software is firmware running on the Cajun P120 supervisor
engine. The software provides support for the switch modules and their features.
You may occasionally need to update the software to a newer version to support
new hardware expansion modules or increase functionality. Download is available
from the Download Manager (part of the Cajun P120 Standalone Manager) or by
using the TFTP process for updating the software - both are described in Appendix
B, “Software Download”.
Under normal conditions, the Cajun P120 boots up from its Cajun P120 switching
software. However, should that software become damaged, the Cajun P120 may
bootup from a basic version of the software which is stored in a separate secured
bank.
Configuration Upload/Download
This function provides ease of configuration. The user can download a
configuration file to all switches or simply copy the configuration of one switch to
another.
Loading the configuration file is achieved either via Cajun Campus CLI, Legacy CLI
or via the Update Master.
8 Cajun P120 User’s Guide
Chapter 2
Cajun P120 Front and Back Panels
Cajun P120 Front Panel
In addition to the connectors, the Cajun P120 front panel contains status LEDs and
control buttons which provide at-a-glance information.
The Port LEDs display information for each port according to the function selected
by the left and right switches. The parameter you select is shown by one of the
Function LEDs. For example, if the COL LED is illuminated, then all Port LEDs
show the collision status of their respective port. If you wish to select the LAG
(Trunk) function, then press the Right button until the TRK Function LED is lit; if
you then wish to select Rx then press the Left button several times until the Rx
function LED lights ON.
The LEDs, controls and RJ-45/CONSOLE connector (bottom right) on the
Cajun P120 front panel are shown below in Figure 2.1 and Figure 2.2 and described
in Table 2.1. Figure 2.3 shows the power supply and DB-9 connectors at the back of
the switch.
Figure 2.1 Cajun P120 Front Panel
Cajun P120 User’s Guide 9
Chapter 2 Cajun P120 Front and Back Panels
Figure 2.2 Cajun P120 LEDs
Figure 2.3 Cajun P120 Back Panel
Table 2.1 Cajun P120 LED Descriptions
LED Name Description LED Status
OFF – Power is off
PWR Power status
Blink – P120 BUPS power supply is active
ON – Internal P120 power supply is active
OFF – CPU is booting
OPR CPU operation
ON – CPU boot operation completed
The following Function LEDs apply to ports 1 to 40
OFF –
•Port disabled
LNK Port status
• Port enabled and the link is down
ON – Port enabled and link is OK
10 Cajun P120 User’s Guide
Chapter 2 Cajun P120 Front and Back Panels
Table 2.1 Cajun P120 LED Desc riptions (Continued )
LED Name Description LED Status
COL Collision
Tx Transmit to line
Rx Receive from line
FDX Half/Full Duplex
FC
Symmetric Flow
Control
100M 10/100 Mbps
Link Aggregation
LAG
Group (LAG or
Trunking)
OFF – No collision or FDX port
ON – Collision occurred on line
OFF – No transmit activity
ON – Data transmitted on line
OFF – No receive activity
ON – Data received from the line
OFF – Half duplex mode
ON – Full duplex mode
OFF – Asymmetric Pause mode is enabled for
the Gigabit Ethernet port or Flow Control is
disabled for the 10/100 port.
ON – Flow Control (Symmetric Pause only)
mode is enabled for the 10/100 or Gigabit
Ethernet port.
OFF – 10Base-T port or 1000Base-X port
ON – 100Base-TX or 100Base-FX port
OFF – No LAG defined for this port
ON – Port belongs to a LAG
Note: All LEDs are lit during a reset.
Cajun P120 User’s Guide 11
Chapter 2 Cajun P120 Front and Back Panels
Table 2.2 Cajun P120 <- -> Selec t buttons
Description Function
Left/Right Individual – select LED function (see table above)
Reset Press both Right and Left buttons together for five
seconds
FIV Force Initial Version – boot from initial version of the
Cajun P120 software, from Bank A (see Note below).
Note: To perform “Force Initial Version” reset the switch while pressing the FIV
button by using an opened paper clip or other pointed object.
12 Cajun P120 User’s Guide
Chapter 3
Applications
The following sections describe typical applications for the Cajun P120 in a network
with other Cajun Campus products.
Application 1
This application shows two Cajun P120 switches connected to another P120 switch
and a P110 stack via a Cajun P550 backbone. On the left side of the drawing, the
Cajun X120S2 SX Expansion modules in the P120 provide a Gigabit Ethernet link
with redundancy to the Cajun P550. On the right, the connection is via the
Cajun X120F2 100 Mbit Fiber Expansion module.
Figure 3.1 Cajun P120 and P110 at the edge with a Cajun P550 Backbone
Cajun P120 User’s Guide 13
Chapter 3 Applications
Application 2
This application shows two Cajun P120 switches connected to another P120 switch
and a P110 stack using a Cajun M770 Switch backbone. In this drawing, the
Cajun X120S2 SX Expansion modules in the P120 switches provide a Gigabit
Ethernet link with redundancy to the Cajun M770 Multifunction switch.
Figure 3.2 Cajun P120 and P110 at the Edge wit h a Cajun M770 Switch Backbone
Cajun P120
Cajun P120
Gigabit Ethernet
with Redundancy
100 Mbps Ethernet
10 Mbps Ethernet
Cajun M770
Multifunction Switch
Gigabit Ethernet
with Redundancy
Cajun P120
Cajun P116T
x 3
Cajun P118
4x100 Mbps
Trunking
100 Mbps Ethernet
10 Mbps Ethernet
14 Cajun P120 User’s Guide
Application 3
This application shows a P120 switch and a P110 stack on the floors of a building as
part of a Small/Medium-sized Enterprise (SME) network. Cajun P220G and
Cajun P110 form the backbone. On the left side of the drawing, the Cajun X120F2
100Mbit (with redundancy) Fiber Expansion module in the P120 switch connect to
a Cajun P110 stack. On the right, the connection to the Cajun P220G is via
Cajun X120S2 SX Gigabit Ethernet Expansion modules.
Figure 3.3 Cajun P120 and P110 on the floors of a Small/Medium size Enterprise (SME)
Chapter 3 Applications
network with a Caju n P220G and Cajun P110 Backbo ne.
Cajun P120 User’s Guide 15
Chapter 3 Applications
16 Cajun P120 User’s Guide
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