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Page 3
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Page 4
Page 5
Contents
New in this release7
Features 7
Other changes7
Introduction9
Important notices and new features11
New features in release 6.0 11
File names for this release 14
Supported software and hardware capabilities16
Nortel Ethernet Routing Switch 5520 phone dongle17
Ensuring Device Manager Online Help displays correctly 17
Additional information for the feature software license file 18
Upgrading software 18
Supported standards, MIBs, and RFCs 21
5
New hardware 7
File names for upgrade 8
Windows Vista 8
Hardware and software compatibility8
Complete integration of all release 5.1 features 8
Document changes8
New hardware in release 6.0 11
Software features in release 6.0 12
Standards 21
RFCs 21
Resolved issues25
Issues resolved in release 6.0 25
Known issues and limitations29
Known issues 29
VLACP issue 44
Port or ifIndex offset issue 45
Filter resource consumption 45
Masks and filters inventory check 47
QoS Interface Security Application51
See the following sections for information about changes that are not
feature-related.
New hardware
Nortel Ethernet Routing Switch 5000 Series introduces new switches that
complement the Ethernet Routing Switch 5500 Series. The new switches
provide increased bandwidth, use the same software image as the 5500
Series switches, and allow you to customize your stack.
See "File names for this release" (page 14) for the file names for this release.
Windows Vista
Release 6.0 supports Windows Vista.
Hardware and software compatibility
The following sections provide a synopsis of hardware and software
compatibility considerations.
Complete integration of all release 5.1 features
Release 6.0 incorporates all the features of all previous releases and
maintenance builds up to and including all release 5.1 customer builds.
(NOTE: The intent is to support most maintenance builds on the v5.1 stream
in v6.0, however, there may be instances when there is a v5.1.x that will
not be supported because it was not available at the time of integration
into the v6.0 stream.)
See Nortel Ethernet Routing Switch — Release Notes, Software Release
5.1 (NN47200-400) for more information on release 5.1 features.
Document changes
This document is reformatted to comply with the Nortel Customer
Documentation Standards. For more information, see Nortel EthernetRouting Switch 5000 Series Documentation Roadmap, NN47200-101.
This document describes new features, hardware, upgrade alerts, known
and resolved issues, and limitations for Nortel Ethernet Routing Switch
5000 Series, release 6.0.
For information on how you can upgrade your version of Device
Manager, see Nortel Ethernet Routing Switch 5000 Series Fundamentals,
NN47205-102.
The Nortel Ethernet Routing Switch 5000 Series, supported by software
release 6.0, includes the following switch models:
•
Nortel Ethernet Routing Switch 5510-24T
•
Nortel Ethernet Routing Switch 5510-48T
•
Nortel Ethernet Routing Switch 5520-24T-PWR
•
Nortel Ethernet Routing Switch 5520-48T-PWR
•
Nortel Ethernet Routing Switch 5530-24TFD
9
•Nortel Ethernet Routing Switch 5698-TFD
•
Nortel Ethernet Routing Switch 5698-TFD-PWR
•
Nortel Ethernet Routing Switch 5650-TD
•Nortel Ethernet Routing Switch 5650-TD-PWR
•
Nortel Ethernet Routing Switch 5632-FD
Configurations can vary from a stand-alone switch to a stack of up to 8
switches. A stack can consist of any combination of switches. One of the
benefits of operating Nortel Ethernet Routing Switch 5000 Series switches
in a stack is management efficiency; a stack is managed with a single IP
address and software is available as a single image across all models.
These Release Notes provide the latest information about software release
6.0, as well as operational issues not included in the documentation suite.
For a complete list of documentation in the Nortel Ethernet Routing
Switch 5000 Series suite, see Nortel Ethernet Routing Switch 5000 SeriesDocumentation Road Map (NN47200-101).
The information in these Release Notes supersedes applicable information
in other documentation.
You can use the Ethernet Routing Switch 5600 Series switches as
stand-alone switches, in a hybrid stack with your existing Ethernet Routing
Switch 5500 Series switches, or in a pure stack of Ethernet Routing Switch
5600 Series switches.
The Ethernet Routing Switch 5600 Series switches provide more power
through optional power supply modules. For power supply options and
specifications, see Nortel Ethernet Routing Switch 5000 Series Installation
(NN47200-300).
For complete descriptions of the new switches and installation instructions
for the Ethernet Routing Switch 5600 Series, see Nortel Ethernet RoutingSwitch 5000 Series Installation (NN47200-300).
Software features in release 6.0
Dual agent support
This feature provides support for two agents and configurations for either
Ethernet Routing Switch 5500 or 5600 Series pure stacks, or for mixed
stacks containing both products, however, Dual Agent Functionality is not
supported on the Ethernet Routing Switch 5510. The requirement is for the
Agent image to selectively boot the device using either agent specified.
In addition, the ability to specify when one agent image will become the
primary (immediate, next reboot, or scheduled reboot) will be available.
IGMPv3 snooping support
Release 6.0 supports basic IGMPv3 snooping.
PIM-SM
Release 6.0 supports basic multicast routing. PIM-SM is a licensed feature
which has been added to the existing Advanced License for the 5000 series.
PIM-SM only operates in stand-alone mode in this release.
Ethernet Routing Switch 5600 Series hardware that operates in stand-alone
mode, as well as Ethernet Routing Switch 5520 or 5530 switches in
stand-alone mode support PIM-SM. The Ethernet Routing Switch 5510
does not support PIM-SM.
IPv6
This feature provides management support for the switch or stack through
IPv6. Functionality includes IPv6 host access to the switch, as well as
access to a number of management functions over IPv6.
Many-to-many port mirroring (Ethernet Routing Switch 5600
Series only)
Release 6.0 supports many-to-many port mirroring on Ethernet Routing
Switch 5600 Series switches.
This functionality is only available on the Ethernet Routing Switch 5600
Series hardware. A maximum of 4 port mirroring instances can be
configured based on some rules. A Hybrid stack supports only one
port-mirroring instance (the default instance) as in Ethernet Routing Switch
5500 Series.
In a pure Ethernet Routing Switch 5600 Series hardware stack with stack
oper-mode configured to hybrid only one port-mirroring instance is available.
This rule is not applicable to standalone because stack oper-mode mode
is valid only on stack. So on a Ethernet Routing Switch 5600 standalone
with stack oper-mode configured as hybrid all 4 port mirroring instances
will be allowed.
All existing traffic identification modes for mirroring are supported. You can
configure many-to-many port mirroring with Web-based management.
Device Manager does not support Port Mirroring.
MIB and Trap Web pages
A new Web page allows you to selectively configure traps and trap receivers.
The page follows the standard web design conventions and has each trap
and trap receiver listed. The Web page allows you to enter additional trap
receivers and modify existing ones. The Web page lists all available traps
and allows you to selectively enable or disable each one.
The new MIB Web Page application offers a way to access the SNMP MIB
objects for each unit from Web-based management, with the help of the
Get, Get-Next and Walk buttons.
NSNA enhancements
Release 6.0 supports Fail Open and VLAN Change Based on MAC
Authentication.
ASCII download log enhancements
The ASCII Download Log feature logs messages that describe the result of
the ASCII Configuration File download, especially the failed commands, as
informational customer messages.
Combination image
The Combination (Combo) Agent Image contains the header of the image
and two agent images, a 56xx agent image and a 55xx agent image.
Ethernet Routing Switch 5500 software releases before release 6.0 do not
support the Combo image.
A stand-alone unit or a stack that uses the Ethernet Routing Switch 5000
Series Software Release 6.0 can download a combo image.
This software release (6.0) will be available in two different formats, a file
in Combo format version 6.0 and a file in 55xx image format version 6.0.
The 55xx image format in this release is necessary because all the current
55xx releases do not support the Combo image.
Combo Diagnostic Image
The Combo Diagnostic Image contains the header of the image and two
Diagnostic images, a 56xx diagniostic image and a 55xx diagnostic image.
Ethernet Routing Switch 5500 software releases before release 6.0 do not
support the Combo diagnostic image.
This diagnostic release for the new software release ( 6.0) will be available
in two different formats, a file in Combo format and a file in 55XX format.
The 55XX image format in this release is necessary because all the current
55XX releases do not support the Combo diagnostic image.
RMON entry scaling
Release 6.0 increases the number of RMON entry scaling entries for the
RMON Alarm Table and RMON event tables to 800. The previous limit
was 150. You can configure RMON entry scaling with NNCLI, ACG, and
Device Manager.
DoS attack prevention package (DAPP) support
Release 6.0 introduces DAPP on Ethernet Routing Switch 5600 Series
switches.
Ethernet Routing Switch 5600 ASICs have a number of pre-configured
virus and DoS signatures built in. This release provides a method of quickly
enabling the preconfigured virus and DoS signatures to provide additional
levels of protection within the network while simultaneously preserving
filters. You can configure DAPP with NNCLI, ACG, Device Manager, and
on a separate Web page.
Device Manager support for the ERS5500 and ERS5600 v6.0.0 will be in
Java Device Manager v6.1.6 targeted for availability from www.nortel.comby
2008-12-19.
Supported software and hardware capabilities
The following table lists the known limits for the Ethernet Routing Switch
5000 Series, release 6.0 and Device Manager 6.0.1.0. These capabilities
will be enhanced in subsequent software releases.
Table 2
Supported capabilities in Ethernet Routing Switch 5000 Series switches
FeatureMaximum number supported
VLANs
256
Protocol-based VLANsDepending on the protocol specified, the
number of protocol VLANs supported at one
time varies between 3–7. See Nortel Ethernet
Routing Switch 5500 Series Configuration —
VLANs, Spanning Tree, and MultiLink Trunking
(NN47200-502) for more information.
Nortel SNA VLANsOne Red VLAN per switch. Nortel recommends
a maximum of five Yellow VLANs, five Green
VLANs, and five VoIP VLANs per switch for
release 6.0.
Nortel SNA portsAll ports.
Note: The 5530 has two 10 Gigabit (Gb) ports.
You can configure these as uplink ports only.
You cannot configure these as dynamic ports.
Aggregation groups (link aggregation)
Ports per aggregation group
32
8
IGMP maximum number of unique groups240 (for Layer 2) and 1000 (for Layer 3)
EAPoL 802.1x supplicantsAll ports
MAC addresses in fdb16 Kb
1
Number of routes (dynamic, static and local)
2000
ARP records
Static ARP
IP interfaces
Static routes
Spanning Tree Groups
Aggregation groups (link aggregation)
Ports per aggregation group
Ensuring Device Manager Online Help displays correctly 17
FeatureMaximum number supported
MAC addresses in fdb16 Kb
OSPF areas4 (3 areas plus area 0)
OSPF adjacencies
VRRP interfaces
ECMP4 paths
DHCP Snooping Binding table entries
64
64
2
512
DHCP relay forward paths
IP Management routes
PIM-SM multicast entriesUp to 500 for 55xx series
1
Total number of routes (dynamic and static) supported.
2
Not supported on 5510 switches.
512
4
Up to 1000 for 56xx series
Nortel Ethernet Routing Switch 5520 phone dongle
The part number for the Nortel Ethernet Routing Switch 5520
(5520-24T/48T-PWR) universal phone dongle is DY4311046.
Ensuring Device Manager Online Help displays correctly
Nortel supports the following two browsers for Device Manager Online Help:
•
Netscape
•
Internet Explorer
If you use Netscape as your Web browser, to ensure that the topics and table
of contents display correctly when making a context call to on-product Help,
perform the following procedure once before requesting Help on a topic:
1. Start the Netscape browser.
2. From the Tools menu, select Options. (An Options window opens.)
3. In the Security and Privacy panel of the Options window, click SiteControls. (An Options - Site Controls window opens.)
4. Ensure that the Site List tab is selected.
5. Select Local Files in the Master Settings area of the window.
6. Select Internet Explorer in the Rendering Engine area of the window.
7. Click OK to close the Options - Site Controls window.
Additional information for the feature software license file
When you create a license file to enable licensed features on an Ethernet
Routing Switch 5000 Series switch with the Nortel Electronic Licensing
Portal at www.nortellicensing.com, you must specify a file name. Follow the
instructions on the License Certificate within the License Kit, or see NortelEthernet Routing Switch 5000 Series Fundamentals (NN47200-104) for
more information. You must use the following rules when you generate
and name the file:
•
A maximum of 63 alphanumeric characters
•
Lowercase only
•
No spaces or special characters allowed
•
Underscore (_) is allowed
•
The dot (.) and three-character file extension are required
For example, abcdefghijk_1234567890.lic.
The format of the file that you upload to the license generation tool (and that
contains the list of MAC addresses) must be as follows:
•
ASCII file format
•
One MAC address per line
•
No other characters, spaces, or special characters allowed
•
MAC must be in hexadecimal, capitalized format, with each pair of
characters separated by colons (XX:XX:XX:XX:XX:XX)
•
The file must contain the correct MAC addresses. Any incorrect MAC
addresses will result in the licensed features not working on designated
units.
•
The number of MAC addresses must not exceed the number of MAC
addresses allowed for the License Authorization Code entered for a
particular file:
— AL1016001 = 2 MAC addresses (1 stack/standalone unit)
— AL1016002 = 20 MAC addresses (10 stacks/standalone units)
— AL1016003 = 100 MAC addresses (50 stacks/standalone units)
— AL1016004 = 200 MAC addresses (100 stacks/standalone units)
Upgrading software
To upgrade to the new software release 6.0, Nortel recommends that you
upgrade the diagnostic software to the 6.0.0.4 version, and then upgrade
the agent version to release 6.0.
Note: If you have version 5.x software on your Ethernet Routing Switch
5000 Series switches with an Advanced License file installed, use the
following steps to upgrade your software.
Identify the corresponding Ethernet Routing Switch 5000 Series switch
Advanced License deposit in the License Bank and click Details.
Locate the License file name in the transaction and click Download to
download the Advanced License file and reinstall it on Ethernet Routing
Switch 5000 Series switch or switch stack to enable configuration of the
release 6.0 feature, PIM-SM (which has been added to the Advanced
License).
The following table describes possible image locations:
Table 3
Possible scenarios
ImageLocation
Local Agent ImageAgent image in the flash memory of the unit.
Local Diagnostic ImageDiagnostic image in the flash memory of the unit
Pre-5.0 Diagnostic ImageDiagnostic image released before 5.0.
5.0 Diagnostic ImageDiagnostic image released in 5.0
6.0 Diagnostic ImageDiagnostic image released in 6.0
You can upgrade the Agent Image in your switches from an earlier release
image. The following table provides the Agent Image downgrade or upgrade
chart:
Table 4
Agent Image downgrade or upgrade chart
Local Agent
Image version
5.0
5.1
6.0
Download Agent Image version
4.x5.05.16.0
YesYesYes—if Local
Diagnostic Image
is 5.0 Diag Image.
YesYesYesYes
YesYesYesYes
Yes—if Local
Diagnostic Image
is 5.0 Diag version
or 6.0 Diag
version.
You can upgrade the Diagnostic Image in your switches from an earlier
release image. The following table provides the Diagnostic Image
downgrade or upgrade chart:
Table 5
Diagnostic Image downgrade or upgrade chart
Local Agent Image
version
5.0
5.1
6.0
Use the following procedure to upgrade the Agent Image from release 5.0
or 5.1 to release 6.0:
Upgrading Agent Image from release 5.0 or 5.1 to release 6.0
StepAction
1Upgrade the diagnostic image from the earlier release to release 6.0
2
Download Diagnostic Image version
Before release 5.0
YesYesYes
NoYesYes
NoYesYes
5.16.0
diagnostic image.
Upgrade the agent image from release 5.0 or 5.1 to release 6.0
agent image.
—End—
Use the following procedure to upgrade the Agent Image from release 4.x to
release 6.0
Upgrading Agent Image from release 4.x to release 6.0
Upgrade the agent image from release 4.x to release 5.0.
Upgrade the diagnostic image the earlier release to release 6.0
diagnostic image.
Upgrade the agent image from release 5.0 to release 6.0.
—End—
Nortel Ethernet Routing Switch 5000 Series
Release Notes — Release 6.0
NN47200-400 04.01 Standard
6.0 12 December 2008
Page 21
Note: If the you have an existing Stack with mismatched Diagnostics,
the Base will not allow you to load the agent. If an error occurs when
you try to upgrade the software, check that the software and Diagnostics
versions all match by running the Show Tech command.
Supported standards, MIBs, and RFCs
This section lists the standards, MIBs, and RFCs supported by the Nortel
Ethernet Routing Switch 5000 Series.
Standards
The following IEEE Standards contain information that applies to the Nortel
Ethernet Routing Switch 5000 Series:
•
IEEE 802.1D (Standard for Spanning Tree Protocol)
•
IEEE 802.3 (Ethernet)
•
IEEE 802.1Q (VLAN Tagging)
•
IEEE 802.1p (Prioritizing)
•
IEEE 802.1X (EAPOL)
Supported standards, MIBs, and RFCs21
RFCs
•
IEEE 802.3u (Fast Ethernet)
•
IEEE 802.3z (Gigabit Ethernet)
•
IEEE 802.3ab (Gigabit Ethernet over Copper)
•
IEEE 802.3x (Flow Control)
•
IEEE 802.3ad (Link Aggregation)
•
IEEE 802.1ab (Link Layer Discovery Protocol)
For more information about networking concepts, protocols, and topologies,
consult the following RFCs:
The following table lists the issues resolved for release 6.0:
Issues resolved in release 6.0
The following table describes the issues in previous software releases for the
Ethernet Routing Switch 5000 Series that have been resolved in release 6.0.
Table 6
Issues resolved in Ethernet Routing Switch 5000 Series release 6.0
25
Change Request Number
Q01193666Pinging the virtual IP address from the master VRRP routing switch is
Q01200004Ping delay resolved.
Q01295448With release 6.0, when configuring IPFIX, the Exporter IP is not
Q01305224Each port on the 5520 is restricted to 11 interface IDs. Depending on
Q01324425A PC can disappear from the Nortel SNA client list after you perform a
Q01334161When a port is NSNA enabled, the CLI allows you to disable CIST
Documented issue
now supported.
configurable. Therefore the exporter address is one of the routable
interfaces. Resolved.
your configuration, you may be unable to select the complete list of
interface applications on an Ethernet Routing Switch 5520 because of
the permitted number of interface IDs. Resolved.
Time Domain Reflectometry (TDR) test on a Nortel SNA dynamic port.
Workaround: Nortel recommends that you avoid running a TDR test
on a Nortel SNA port. Resolved.
learning even though that port belongs to CIST and MSTI.
Whenever a port is added to a new VLAN in RSTP or MSTP mode, it
automatically becomes STP enabled for that group. This is different
from the Nortel STPG mode, where the port is not automatically
enabled on the STP group. Resolved.
Q01376770Note that you should not disable global IP routing on the 5500 Series
switch when the switch has an IST enabled.
The CLI returns a reminder message if you attempt to disable IP
routing with an IST enabled. The JDM also returns an error message,
although the message is more generic than that returned from the
CLI. Resolved.
Q01378866When VLAN configuration control (VCC) is set to automatic, avoid
changing tagging on ADAC ports. Resolved.
Q01386170An ACG file will display error messages for RIP settings when you
attempt to download the file if the file contains more then 64 IP
VLANs. If using the CI, the download stops at the first error message.
Resolved.
Q01402433-01The CLI commands used to set the CLI password on a stack are not
displayed when using ? to request CLI help for the command (that is,
cli password ?).
The omitted commands are:
cli password stack serial <password>
•
cli password stack telnet <password>
•
cli password stack read-only <password>
•
cli password stack read-write <password>
•
Resolved.
Q01402425-01MAC address security in a stack is limited to the highest port number
of the base unit if that unit is a 5510-24T or 5530-24TFD model. Port
numbers higher than 24 are not allowed when a 5510-24T is the base
unit and ports higher than 26 are not allowed when a 5530-24TFD is
the base unit.
For example, if the stack consists of a 5530-24TFD as the base unit
and unit 2 is a 5510-48T, ports 2/25 through 2/48 cannot be used for
MAC-based security in learning mode.
Note: Also see CR Q01387506-01 directly below.
Resolved.
Q01387506-01In hybrid (mixed) stack configurations, Nortel recommends that the
higher model number unit be made the base unit. In instances where
a 5530-24TFD is to be part of the stack, Nortel recommends that this
unit be made the base unit to utilize the full range of features present
on this unit.
Note: If running MAC security, ensure you have a 48-port unit as the
BU (see CR Q01402425-01 directly above).
Q01338594ACG configuration files do not save LLDP information successfully.
Resolved.
Q01327042
Q01326930
No useful error message appears when you try to enable ECMP or
OSPF on the JDM without the software license. You cannot, however,
enable ECMP or OSPF without the license.
Workaround: Upload the license using the CLI prior to globally
enabling ECMP or OSPF on the JDM. Resolved.
Q01340389The switch allows you to change rate limiting on active DMLT ports
while one or more units having DMLT members are down. However,
Nortel recommends you avoid configuration changes of any kind while
some units (with DMLT members) are down, as you may experience
unexpected results. Resolved.
Q01357858Proprietary TLV is not available for MLT, however 802.3 link
aggregation is supported. Resolved.
Q01362571There is no message or information provided after you download the
software license file using the Web interface. You will not receive
notification that the license has loaded successfully or not. Note that
you must reset the switch for the license to be activated. Resolved.
Q01362573When you open the license download page using the Web-based
interface, there is no help file information in the configuration section
for loading the license file. Resolved.
Q01366773Avoid enabling Nortel SNA on a brouter port—the port is not added
to the Red VLAN in this case. Release 5.0 does not support Nortel
SNA on a brouter port. Resolved.
Q01372515OSPF virtual link is not supported in release 6.0. Any display for this
feature is strictly informational. Resolved.
Q01381116For Release 5.0, ensure you set LACP timeout to “Long” if you have
more than eight LACPs and eight links per LACP. Resolved.
Q01382613A root is not elected on an MLT if the VID for an MLT port belongs to a
VLAN for an inactive MSTI. Ensure the PVID belongs to a VLAN for
an active MSTI. This is related to a hardware limitation. Resolved.
Q01384306Note that the JDM displays information for RIP Poison enable/disable
inconsistently.
Workaround: Use the CLI. Resolved.
Q01386369If using OSPF MD5 authentication, note that in the case of
authentication failure, only the enterprise-specific traps are logged
to the syslog. Resolved.
Q01305076For release 6.0, you cannot load the software license file from a USB
device. Resolved.
Q01404072After entering any other command, wait at least twenty (20) seconds
before using the copy config nvram command.
Additionally, Nortel recommends that you avoid using the copyconfig nvram command in ASCII configuration files. Resolved.
Use the information in this section to learn more about known issues and
limitations. Where appropriate, use the workarounds provided for these.
Known issues
See the followingtable for a list of known anomalies for the Ethernet Routing
Switch 5000 Series release 6.0.
Table 7
Ethernet Routing Switch 5000 Series known issues
29
Change Request
Number
Q01280422The switch may display “0” for the root port (spanning tree), rather than
Q01328936
Q01331097
Q01345613
Q01309758If LACP is enabled on a port that you configure as a Nortel SNA uplink port,
Q01319650When you have VRRP and traps enabled, OSPF convergence may slow
Q01334543The switch does not return a meaningful message when you attempt to add
Q01339715The IPFIX flush menu item is present and functioning in the CLI, although the
Description
“None”.
Note that the greater the number of VRRP instances you have, the greater
the risk of VRRP bounces (Release 5.0 supports 64 VRRP instances).
To help alleviate VRRP bounces, when you configure FAI on VR instances,
set the FAI to 600 ms or higher.
In general, for a large number of VRRP instances, Nortel recommends that
you use a higher advertisement interval.
the switch does not allow you to disable LACP on that port.
down.
five or more IP prefix lists into a policy.
ip ipfix flush command and its parameters do not display in the menu
when you enter an ip ipfix ? command query (Global configuration
mode).
Q01346792If you are unable to get the switch to transmit LLDP network policy type,
length, and value (TLV), ensure that the following two conditions are true:
•
ADAC is enabled on the port
•
“Filter Unregistered Frames” option is set to “Disabled” on the
ADAC-enabled port
Refer to Nortel Ethernet Routing Switch 5500 Series Overview – SystemConfiguration (NN47200-500) for more information.
Q01353603When attempting to download the license file using the JDM after a previous
attempt, the switch may return a “commitFailed” error. You may also receive
this error if you enter an invalid license file name.
Q01366965The CLI behavior related to PoE TLVs (MED "Extended Power-Via-MDI"
and DOT3 "Extended Power-Via-MDI") is inconsistent when enabling them
for transmission on non-PoE switches (no error message is generated in
either instance).
Q01370360When using the CLI, you may see an inconsistency in output for the
show spanning-tree <mstp|rstp> port <config|status>
<port> commands in MSTP or RSTP mode. This only occurs when there is
no link on the port for which you are viewing statistics.
Q01371237The 5500 Series switch supports 32 MLT groups. These can be configured
using the CLI, JDM, and the Web interface. Note that the CI allows you to
configure only six of the 32 MLT groups.
Q01379149You must ensure you set the same speed on link partners. That is, if the
speed for a port is set to 10 Mbps, any device connected to that port (for
example, an IP phone), must also be running at 10 Mbps.
Q01380260You may experience an inconsistency between the base unit (BU) and
non-base unit (NBU) ports when using the EAPoL authentication process
with UBPs. Specifically, on the NBU, if a policy cannot be installed, the switch
will send a success and then immediately send a failure.
Q01384613There is a scaling limitation for TLV in the 802.1ab feature. If you have an
8-unit stack that is fully connected and has 256 VLANs configured, you might
experience that the DOT1 VLAN name TLV is not sent properly.
Q01385870You can configure port mirroring using NNCLI, CI and Web-based
management only.
Q01391522When using the CI to create STP groups, you may receive "The Group has
no VLAN members" error message, which then interferes with subsequent
configuration. Toggle the STP group field to continue configuration.
Q01394363There is a discrepancy between the CI and the JDM when viewing port
Q01395852If OSPF is enabled, you may receive an OSPF syslog message on the NBU
while the system is coming up. This occurs because OSPF checks for the
license, but the license information is not available until the stack is formed.
Q01319058In a Nortel SNA setup, you may experience temporary loss of Nortel SNA
functionality when UDP forwarding has approached maximum capacity.
Workaround: Configure a filter on the port that connects to the SNAS (or
depending on your configuration, on the port connected to the switch that,
in turn, connects to the SNAS) to isolate Nortel SNA SSCP traffic received
by the CPU.
The CLI commands to configure a filter are the following:
•
qos ip-element <element id> src-ip <ipaddr/mask>
•
qos classifier <value> set-id <value> element-type ip element-id <value>
•qos action <value> update-1p <value>
•
qos policy <value> port <portlist> clfr-type class clfr-id <value>
in-profile-action <action id> prec <value>
Q01374774When you simultaneously reset two or more non-adjacent stack members
causing other members to be isolated from the stack, the stack may fail the
DB exchange when the reset units attempt to re-join the stack.
Workaround: Reset the base unit, or change the ports status for a stack
(down/up).
Q01622383MLT/Mac-sec: Traffic does not recover after reboot on a MLT with mac-sec
enable until you reboot the standalone.
Q01618770To upgrade the SSH from Rel. 4.x.x to Rel. 5.1, you must first upgrade to 5.0.
Use the following procedure to upgrade from Rel. 4.x.x to Rel. 5.1.
1. Upgrade the agent image from Rel. 4.xx to Rel. 5.0
2. Upgrade the diag. image to Rel. 5.0.0.4 (this diag. image was released
with agent Rel. 5.1)
3. Upgrade the agent image from Rel. 5.0 to Rel. 5.1.
Q01415261If a MAC is not present in the MAC-db at the SNAS, it is learned on a switch
port and entered as a dynamic PC into the NSNA client list. Adding the same
MAC to the MAC-db after that will not authenticate the MAC. The port will
need to be reset or NSNA disabled and enabled at the port to remove it from
the client list for subsequent authentication of that MAC.
Q01650221NSNA dynamic ports must have Spanning Tree Learning mode Fast Learning
or Disabled when NSNA is globally enabled. STP Normal Learning mode will
not be restored if NSNA is disabled.
Q01637116Adding or deleting host routes for hosts directly attached to the router in
non-backbone area is not advertised by the router without disabling and
enabling OSPF on the switch.
Q01471387Ping to the VRRP IP addresses on the switch from local console or telnet
is not supported.
Q01680155Nortel recommends that you do not make any changes that might affect
NSNA behavior when you have clients connected.
Q01681616If you remove a connected route, none of the static routes depending on it
will be added back as Non Local Static Routes if there is another route which
can be used as Next Hop for these routes.
Q01680918The show qos diag command may not show correct data if the device is
in the middle of a filter installation.
Q01655103Tagged ports shared between a VLAN in STPG 1 / CIST and a VLAN
removed from all spanning tree groups will block traffic for both VLANs if the
STP state is not ’Forwarding’ in STPG 1 / CIST.
Q01650225Due to the nature of NSNA, Nortel recommends that you disable autosave
with no autosave enable, while NSNA is enabled. If you need to save
a configuration, use the explicit save to nvram command, copy confignvram.
Q01421487STPG: When a Topology Change is in place, some MAC addresses may not
be aged out from the MAC address table after the Forwarding Delay interval.
Q01688004
Q01689623
Nortel recommends that you do not connect both SMLT aggregation
switches to the same network or end device (PC or workstation) through non
SMLT/SLT ports. When non SMLT/SLT ports are connected together on the
same VLAN with the IST ports, it creates a loop in the network.
To prevent a loop, always assign non SMLT/SLT ports to different VLANs.
For instance, if switches A and B are both SMLT aggregation switches and
ports 5 on both switches are non SMLT/SLT ports, and you connect ports
5 of both switches to the same PC configured as a TFTP server, you must
assign port 5 of switch A to VLAN 100 and port 5 of switch B to VLAN 200.
IST ports may or may not be a member of VLANs 100 and 200.
Q01426066In a busy network which has more than 400 L3 routes and 2000 MAC
addresses, if one of the SMLT aggregation switches goes down and then
comes back up, each aggregation switch must ageout its own MAC and ARP
tables, and then relearn the new MACs and ARPs. During this process,
contention for system resources will cause new MAC addresses and new
ARPs to be processed slowly, possibly resulting in flooding and packet loss
for about 20-30 seconds.
Q01693817Nortel recommends that you do not run TDR tests while the device is in a
transient state, such as when units are being rebooted or are joining the stack.
Q01711153IPFIX may report incorrect byte or packet count due to software limitations.
Q01720549In an SMLT environment, all IST traffic (switched or routed) is blocked
from egress on SMLT / SLT ports that are currently in SMLT mode. This
is achieved through programming the PORT_TRUNK_EGRESS table
corresponding to the IST trunk appropriately. However, when the IST ports
and SMLT / SLT ports reside on the same 5695 device, the EGRESS_MASK
table needs to be programmed too. Currently, when an IST / SMLT port goes
up or down, the corresponding entry in the EGRESS_MASK table is cleared,
resulting in a loop. In the Regatta 5.0 code base, this situation is corrected by
re-executing the block IST call that reprograms the two tables correctly. This
call is made whenever an IST port goes up/down or an SMLT port comes up
and the trunk is already in SMLT mode.
To work around this problem, static routes must be used.
Q01721397For the 10 G or XE port, the oversize counter does not increment.
For the 1 G or regular port, the oversize counter only increments if the packet
that it receives is between 1519 and 9216 bytes.
Q01722655
Q01723309
The vlacp port CLI command in Agent v5.1 no longer accepts multicast
MAC addresses for the funcmac-addr parameter.
•
When an ASCII configuration file uploaded from a switch running Agent:
v5.0.0 is downloaded to a switch running Agent: v5.1.0, an error,
Configuration script execution Failed, is generated if the
vlacp port ALL funcmac-addr command in the file is applied to a
multicast address.
•
After you upgrade the agent from Agent: v5.0.0 to Agent: v5.1.0,
any multicast MAC address previously configured for the interface
funcmac-addr parameter needs to be manually modified to the 5.1
default value of 0.0.0 or a unicast address.
Q01723954When you configure a DMLT as an IST or SMLT in a stack, Nortel
recommends that you have at least one DMLT link on the base unit. If you
have a DMLT link on the base and if the base goes out and temp-base takes
over, the traffic recovery process is much faster. Traffic loss is reduced.
Q01728569Continuous observation of IPFIX data uses a lot of memory on the switch and
burdens the switch CPU to the point where it can’t do other tasks. Therefore,
the switch checks the network traffic at each second beat, rather than looking
at every packet to maintain IPFIX records. When you use IPFIX, the traffic
volumes are an estimate rather than the actual measured flow volume.
Q01728586There are 4 internal ports for two Cascade links. Internal ports 1 and 2 are
associated with Cascade-Down link and internal ports 3 and 4 are associated
with Cascade-Up link.
•
Message Stack port 1 DOWN or Stack port 2 DOWN means
Cascade-Down link is down.
•Message Stack port 1 UP or Stack port 2 UP means
Cascade-Down link is down.
•
Message Stack port 3 DOWN or Stack port 4 DOWN means
Cascade-Up link is down.
•
Message Stack port 3 UP or Stack port 4 UP means
Cascade-Up link is down.
Q01731450The OSPF neighbor state intermittently remains in Exch Strt when routing
is disabled and enabled for an ABR with virtual link configured.
Workaround: To return the OSPF neighbor to the full state; disable then
re-enable routing.
Q01736809To enable IPSG, you must enable both DHCP Snooping and Arp Inspection
on the switch and configure the port as untrusted.
Q01737603The correct way to log out of the Web-based management interface is to
go to the main menu and choose Administration > Logout. If you close
the browser window, you will be unable to log back into the Web-based
management interface for the configured idle period.
Q01736807To confirm that there are sufficient filter or mask resources available for you
to enable IPSG, use the show qos diag command to display the filter and
mask resource use by a port that is a member of a QoS interface group. The
number of QoS plus nonQoS masks cannot exceed a total of 15 for each port
as there are only 15 available masks on the DUT. Also, the number of QoS
plus nonQos rules cannot exceed a total of 128 for each port
Q01737679In an SMLT environment, the traffic received on an IST port is categorized
into two groups: IST switched and routed packets. To prevent a loop
condition, the switch must block IST switched packets (broadcast, multicast,
and unknown unicast traffic) from egressing to any SMLT or SLT ports.
However, SMLT switch must be able to forward IST routed packets to any
specific SMLT or SLT port as requested by the routing engine. A hardware
limitation, ERS55xx blocks both IST switched and routed packets from exiting
SMLT or SLT ports. As a result, some of the L3 traffic will be lost. When
you configure ERS55xx with both SMLT and L3 dynamic routing protocols
(OSPF, RIP), you must avoid the topology in which the L3 traffic received on
an SMLT switch is routed to the other SMLT peer because it is a better route.
In the preceding figure, 86xx has two routes to reach PC2. The first route is
to 55xx-a and then 55xx-c. The second route is to 55xx-b and then 55xx-c. If
8600 uses second route, the traffic from PC1 will never reach PC2.
To force the 86xx to take the first route, you must configure VRRP with
Backup/Master enabled on both SMLT switches.
Then static route with the best cost to the VRRP must be added to 86xx to
make sure 86xx always chooses 55xx-a as the next hop to reach PC2.
Q01738603If you use the non-EAP phone feature in Layer 3 mode with DHCP Relay, it
may disrupt Layer 3 connectivity. Nortel recommends that you deploy this
feature only in Layer 2 mode.
Q01738540A hardware limitation means that once you program the filter, it blocks all IPs
that are not allowed. The switch does not show which IP was dropped.
Q01653932When you enable IPSG on a list of ports, it is enabled one port at a time. In
addition, IPSG will try to setup IP filters with binding entries currently defined
for the port. In the case of a trunk, DHCP binding entries are defined only for
the first member of the trunk.
Workaround: Once you enable IPSG on all trunk ports, administratively
disabled and enabled all trunk ports to force DHCP Snooping and IPSG to
update all IP entries to all trunk ports.
Q01452496Do not administratively disable port mirrored ports in MSTP mode.
Q01370981Dynamic passive devices that redo DHCP may be displayed as a PC.
Q01446613The total number of allowed EAP and non-EAP MACs must not exceed 32.
Q01252555You can login after SNAS receives all port info from the switch.
Q01362768Any modifications to the SNAS MAC DB will not take effect on the fly.
New in release 6.0
Q01861619Device Manager, like many SNMP-based applications, uses both SNMP v1
and v2c to discover and communicate with the device being accessed. To
create a community string that will permit login on the device using Device
Manager, you must create two entries for that string in the VACM tables, one
for v1 security model and one for v2c
Q01900660Static mrouter ports that belong to a MLT or a LAG may not become active
after a restart of the peer switch.
Workaround: Disable and enable IGMP snooping for the VLANs on the ports
that should be active.
Q01777263When you change an area from Stub to Non-Stub, former Stub area does
not immediately learn AS External routes. It may take several minutes to
be learned. To pass this issue, execute a
no ip routing/ip routing
Global Configuration command.
Q01895538You need to disable IGMPv3 on an Ethernet Routing Switch 5000 Series
release 6.0 snooping device when you connect it to PP8600 PIM-SSM
devices.
Q01905556After a successful MAC address Non-EAP Local or Radius authentication,
other ports forward traffic to the Non-EAP enabled ports with an unexpected
delay of 20 to 60 seconds.
Q01925597After a restart, pluggable module information may intermittently display
incorrectly through the Console Interface or NNCLI when you view it from
another unit in the stack.
Q01925298If you try to set a static router port as a Port Monitor from the NNCLI, the
setting does not save and an error occurs.
Workaround: Use the Port Mirroring menu in the Console Interface.
Q01915680You cannot capture SLPP PDUs on the emitting device with MAC-based
port mirroring modes.
Q01910326When you use LACP with trunk members from each unit in a stack, the show
lldp local-sys-data dot3 command shows the link from last unit as
Aggregated even after the LACP aggregation does not exist anymore.
Q01906362
Q01906362-01
If you connect radius authenticated Non-EAP clients through L2 devices to a
56xx or 55xx unit, and then move one client from an L2 device to another L2
device, user-based policies configured for that client do not move to the new
port with the authenticated client. If you set UBP to high-security-local, the
port will not authenticate the client after the move.
Q01902081Before you download an ASCII configuration file from Device Manager, you
must ensure that another download is not currently in progress with the
ASCIIConfigManualDldStatus field. You can find the field here in Device
You cannot configure the 802.1d-port-compliance feature with the ASCII file.
Q01850763Multiple ports may display the same NSNA client MAC address if you inject
traffic with the same address in multiple ports while displaying NSNA clients.
Q01915112Workaround: The unicast routes to reach PIM RP and Source must be
through directly connected neighbors. These unicast routes should not
span across the L2 DUT(s). Do not configure an SPT or RPT path for PIM
through the L2 boxes.
Q01860831If you connect a PC behind a phone when the switch is in FO state, the VLAN
ID for the IP phone may be displayed as Red after the SNAS reconnects
to the switch.
Q01877773-01
Q01879130-01
For a client that uses a DHCP assigned address: If the IP address is
assigned while the client is in FO VLAN, that address will continue to be used
by client until the lease time expires, even if during this time the client moves
to another NSNA VLAN (which requires a new IP address be assigned to
client through DHCP).
Q01891705When the switch receives continuous routed data IP packets with TTL=1,
OSPF hellos may be dropped and adjacencies may be lost as a result.
Q01861555The traps from MIB S5-Chassis-Trap (s5ctr.mib) send the values of two
objects to the receiver: s5ChasComType, which is a numeric OID of little
use to the user; and s5ChasComOperState, which is a value between 1
and 12. Currently, the objects s5ChasComDescr and s5ChasComSerNum
are not yet available in these traps.
Q01890586After you restart the stack in NSNA solution, some PCs may appear with
0.0.0.0 IP on show nsna client command. However, the PCs have the
right IP and can access network resources.
Q01753980-01If new clients come up while NSNAS is connecting to a switch and is getting
port information, those clients may need to redo DHCP (if they are dynamic
clients). This can be done from Windows command line:
Q01923243Ethernet Routing Switch 5000 Series switches do not guarantee data
integrity if you reset the power during the first 5 mins of operation or during a
(periodic) flash sync operation.
Q01895935ADAC-enabled telephony ports on a base unit may not be re-authenticated
after you reset the stack.
Q01893906This is a boundary condition for a specific scenario. If you take a small
number of source (S) and group (G) entries and keep on changing the (S, G)
values, the buffer fills and there is no room for a new value.
Workaround: Take a number of (S, G) entries and then do not change the
values of (S, G). You may change the value as long as you do not reach the
maximum for Ethernet Routing Switch 5000 Series switches.
Q01924380With short stack cables, the software download may fail repeatedly due to
FCS errors. Replace the stack cable if this happens.
Q01920139PIM:All (S,G) entries do not get installed on SDR or DDR.
Although you may not see this issue in the very first boot, it may happen in
your setup if you do a failover or something else that tries to change the
installed (S,G).
Workaround: a) Keep the number of (S,G) small (under 400) to reduce the
possibility that this problem will occur. b) If you do encounter this issue,
reboot the PIM units in your system to clear the buffer.
Q01910052When you connect PCs with EAP authentication enabled behind IP phones
that are discovered through ADAC, the authentication process may fail after
stack restart.
Workaround: Disable EAP, reboot the stack and then re-enable EAP.
Q01906093If you upload the ASCII configuration file from the switch with the front panel
UI button, it may result in a software exception. Use a different user interface
to upload the ASCII configuration.
Q01904918This is a specific scenario, in which the data is sent through the (distribution
layer) L3 switch (DR) on a VLAN which spans through a L2 switch to another
L3 (non-DR) PIM switch. In a freshly restarted system, you will not see this
issue, but if you reboot the L2 switch, you will not receive the traffic from the
L3 switch (non-DR) that spans in the VLAN across the L2 switch.
Workaround: a) If you have this kind of topology, do not restart the L2 switch
alone. b) If you do reboot the L2 switch and get into this state. then you must
restart the L3 (PIM switches) to reconnect the traffic.
Q01920502Port Mirroring mode XrxYtx does not work (traffic is not mirrored) after a
restart if the X and Y ports are in different MLTs.
Workaround: Disable and enable the port mirroring mode.
Q01920498Port Mirroring mode XrxYtx does not monitor broadcast or multicast traffic (in
X and out Y) if the monitor port and X+Y ports are in different VLANs.
Q01916316When a unit leaves or joins the stack, it disrupts multicast traffic for about
Q01937764The rate for multicast traffic on 10 G ports on the 5000 Series can fluctuate
with 120 groups and 240 clients at smaller packet sizes. This is because
10 G ports have multicast rate limiting set to 10 percent by default. If you
increase the allowed rate or disable rate limiting on the 10 G ports, you will
fix the issue.
Q01939961When you configure multiple port-mirroring instances with MAC-based
address modes, the MAC address table in WEB/CI only displays the MAC
address from the first port mirroring instance.
Q01931881Do not restart the base unit of a stack that previously forwarded neighboring
ports on an Ethernet Routing Switch 8600. If you restart only the base unit
of the stack, the Spanning Tree neighbor ports may go to Spanning Tree
Blocking state.
Workaround: Restart the entire stack.
Q01945517Starting with release 6.0, the Ethernet Routing Switch 5000 Series switches
support four SSH sessions. Nortel recommends that you have no more than
two concurrent SSH Console sessions. The remainder of the SSH sessions
are intended for NSNA communication with the SNAS.
Q01946719The load balance will not take effect on Ethernet Routing Switch 5500 Series
units if the port of the L3 ingress traffic is on the same ASIC with an active
trunk member.
Q01893913In the PIM mroute table, the number of S, G entries displayed may exceed
the number of supported entries when scaling beyond the supported limits.
Q01901336The switch cannot forward multicast traffic through Non-Local Static Routes.
The switch does forward multicast traffic through other route types such
as a local next-hop.
Q01905825TDR tests on a 100 MB-only capable unit do not show the expected results.
There is an inconsistency in showing the TDR results between 56XX units
and 55XX units. On both kind of units the TDR results in the situation from
above will not show the Pair1 and NormalCableLength as expected.
On a 56XX unit, TDR test shows the Pair1Length as 0 Meter. On a 55XX
unit, TDR test shows the Pair1Status as Forced mode, with a much higher
value for Pair1Length than normal.
Q01897761When you use Device Manager with IGMP, you will see some incorrect
information displayed about ActiveQuerier and QuerierPort fields when you
click VLANs, VLANs, Snoop . This is a known issue.
Q01426394With nine VRRP instances and overnight traffic, you may observe a single
VRRP bounce.
Q01932595When you enable IGMP proxy, the display may not show all IGMP groups
on upstream routers. This is a display issue only.
Q01939345The Device Manager does not display the status of all power supplies with
the front panel LEDs. You can see the status of the Power supply under
Edit, Chassis, Power Supply.
Q01945335On an Ethernet Routing Switch 56xx unit, port mirroring mode XrxYtx does
not mirror broadcast, multicast and unknown unicast if the X and Y mirrored
ports are in different MLTs.
Q01948343In some situations on a pure 56xx stack (mirrored ports are not on the
same unit in the stack or traffic enters one unit and exits another one from
the stack), port mirroring modes XrxYtx, XrxYtxOrYrxXtx, XrxOrYtx and
MAC-based mirroring modes may multiply the unicast traffic that exits the
stack. The problem is not present if multicast or broadcast traffic is mirrored.
The problem is not present in port mirroring modes XrxYtx, XrxYtxOrYrxXtx,
or XrxOrYtx if the monitor port is placed on base unit.
Q01950311If you enable ARP-inspection on NSNA or ADAC Voice VLAN, the IP-phones
only work properly on the base unit.
Q01950071If you disable VLACP on an Ethernet Routing Switch 5698 unit before you
start the unit, you cannot enable the unit with the vlacp enable command
in Global Configuration mode. Workaround: Disable, then enable VLACP
on the unit.
Q01954180You cannot disable the AlwaysBroadcast parameter on a VLAN when you
toggle off from Device Manager or set the value from the MIB Browser tool.
Q01953968In a standalone ERS5632FD unit or stack that contains an ERS5632FD
unit, if the system uses 10 G ports in an MLT configuration, do not enable
DHCP snooping globally. If you enable DHCP globally, it could cause the
unit to restart.
If you use this configuration, upgrade the stack to the maintenance software
release 6.0.1 from the Technical Support site at w
ww.nortel.com as described
in the Release Notes. With release 6.0.1, you can enable DHCP snooping.
Q01914709When you download the ACG file with default settings from a SSH session,
the ssh commands will fail (this is because SSH is already enabled on that
unit).
Q01947854When a PIM interface comes up, it identifies as a DR. Then DR election on
that multi-access link happens after exchange of hello messages. If for some
reason DR is flapped, by the time DR is down, the non-DR becomes the DR
and therefore it installs (*,G) and (S,G) for a particular steam. When the
original DR comes back again, the re-election of DR happens with exchange
of hello messages.
In this time frame (Before DR re-election is completed), if the IGMP reports
and multicast traffic are sent on the multi-access link, then both non-DR and
DR PIM routers may install the (*,G) & (S,G) entry as DR. This is an assert
condition. The assert mechanism in this scenario may not work and may lead
to duplicate packets as both DR and non-DR will have (S,G) for the same
To avoid this, make sure that only the DR has the (*,G) entry in the system.
Workaround: If this condition occurs, disable and enable PIM on the non-DR
and DR.
Q01944831With release 6.0.0, there may be connectivity issues with Telnet and
Web-based management connections to the IPv6 management interface
when the traffic between the Ethernet Routing Switch 5000 Series switch and
the host PC passes through a switch that drops frames larger than 1522
bytes. This happens because the default MTU for the IPv6 management
interface is 1522 bytes, and must be set to a lower value of 1500 bytes.
To change the MTU for the IPv6 interface from the Command Line Interface,
type the following
enable
configure terminal
interface vlan 1
ipv6 interface mtu 1500
The following table lists known Ethernet Routing Switch 5000 Series
considerations:
Table 8
Ethernet Routing Switch 5000 Series considerations
ItemDescription
1
Some terminal programs can cause the Console Interface to crash if you enter a
RADIUS secret containing the character “k”. The issue has been reproduced
using Tera Term Pro (version 2.3), as well as Minicom (version 2.1) on a Linux
system.
2
3
Nortel recommends that you avoid using MAC security on a trunk (MLT).
Failed attempts to log in (using TACACS+ authentication and accounting) are
not stored in the accounting file.
4
When switches are in MSTP mode and connected using a trunk (MLT), and at
least one MSTI is configured, the switch can return an incorrect STPG root if you
change the mode to STPG and reset the switches.
5
When you use the JDM/Web to configure and add VLAN ports to an STG other
than the default STG, STG membership of the port may change. In that case,
the new STG participation of that port will be disabled.
Workaround: Enable participation of the ports in the new STG after you enable
Release 5.1 introduces a Demo License, which enables OSPF, ECMP, VRRP,
SMLT, and IPFIX, or any combination thereof for a period of 30-days. At the
end of the 30-day trial period, the features will be disabled, with the exception
of SMLT. Due to the manner in which SMLT is implemented through cabling,
and the fact that Spanning Tree Protocol needs to be disabled, a loop would
be formed on the network if SMLT was disabled as a feature. Therefore, the
following actions will take place to minimize the potential network impact.
Three traps are sent.
•
The first trap is sent five days prior to expiration of the license.
Trap:bsnTrialLicenseExpiration:Trial license 1 will
expire in 5 day(s).
•
The second trap is sent one day prior to the expiration of the license.
Trap:bsnTrialLicenseExpiration:Trial license 1 will
expire in 1 day(s).
•The last trap is sent upon termination of the license.
Trap:bsnTrialLicenseExpiration:Trial license 1 has
expired.
11
12
13
At this point, all license features are disabled except SMLT. SMLT will remain
enabled until there is a stack/unit reset. Once the stack/unit is reset, the feature
will be disabled, and a loop will be formed if there has been no intervention to
remove/disable the ports participating in the IST.
Therefore, Nortel recommends that upon receiving the first trap that the
administrator begin to manually disable that feature and ensure that any cabling
loop is removed.
When you configure IPFIX to work with NetQoS, Nortel recommends that you
disable the SNMP polling by NetQoS device. To do this, remove the community
string associated with the ERS 5500 Series switch on NetQoS device.
Nortel recommends that you do not enable IP Source Guard on trunk ports.
Nortel recommends that you do not enable Critical-IP functionality with VRRP in
an SMLT environment.
VLACP issue
It has been found that in some situations, using VLACP on the Ethernet
Routing Switch 5500/5600 the switches will remove a link from service due
to variations in the arrival time of VLACP messages (VLACP PDUs) from
the far end. The issue may exist between the Ethernet Routing Switch
5500/5600 and Ethernet Routing Switch 8300/8600 when running short
timers and default timeout interval of 3 time-outs. The Ethernet Routing
Switch 5500/5600 switches maintain a rolling history of the last 3 received
VLACP PDUs and calculate the time variance across and between these
VLACP messages. If the time variance of the last 3 VLACP PDUs falls
outside predefined thresholds, the Ethernet Routing Switch 5500/5600 will
remove the link from service.
As a workaround, customers should increase the VLACP timeout value
from the default value of 3 to 5 or more. This will stop the Ethernet Routing
Switch 5500/5600 switches from taking the link down due to the above
mentioned variations in VLACP timing. It should be noted that even though
the timeout value has been set to 5, due to the sampling function, if variance
occurs outside the threshold for any 3 consecutive VLACP PDUs then the
link will be removed from service until VLACP can re-establish a correctly
timed communication. However, a value of 5 has been determined to be
sufficient for this workaround.
Port or ifIndex offset issue
In the past, the SNMP ifIndex assumed that each unit had a maximum of
64 ports, so logical port 65 would be unit 2, port 1 in the stack. Now that
Nortel offers 98 port units on the Ethernet Routing Switch 5600 Series,
there are 128 logical port numbers for each unit. That means that port
129 is unit 2, port 1.
Filter resource consumption 45
At the SNAS, for 6.0 stacks or switches, use switch_type ERS5500.
If you restart the switch or stack after the stack is up and stable, SNAS
may display incorrect unit and port numbers with a 64 offset, instead of a
128 offset. This is only a display issue and the unit and port numbers are
correct at the switch.
To correct the display at the SNAS, disable and enable the switch at the
SNAS. The display now shows the correct unit and port numbers at the
SNAS.
If your PCs have a connectivity issue, reset DHCP.
The next SNAS patch release will include the Ethernet Routing Switch 5600
Series option and will resolve this issue. (Q01949332)
Filter resource consumption
Various Ethernet Routing Switch 5000 Series applications consume filter
resources. These filter resources are a combination of masks and filters,
sometimes also referred to as rules. A filter specifies the bit pattern to match,
while a mask specifies the bit position to be matched and the evaluation
precedence of the filters. Some applications (for instance, BaySecure, Port
Mirroring, IGMP) require a set number of masks and filters enable them.
VRRPNon QoS
OSPFNon QoS
IP Source GuardNon QoS
PIMNon QoS
On the Ethernet Routing Switch 5500 Series switches, each port has 16
masks and 128 filters available. By default, 1 mask and 1 filter are statically
consumed by the system for ARP filtering, leaving 15 available masks and
127 available filters for QoS and other non QoS applications to configure
dynamically.
On the Ethernet Routing Switch 5600 Series switches, the resources are
shared across group of ports. Each group of ports has 16 masks and 256
filters available for each mask. By default, the system statically consumes
one mask and one filter for ARP filtering on all ports, leaving 15 available
masks for each group and 256 available filters for each mask and group for
QoS and other non QoS applications to configure dynamically.
Masks and filters inventory check
You can use the show qos diag command to assess the current filter
resource usage for each port on the Ethernet Routing Switch 5000 Series
switches. The show qos diag command displays the number of QoS
masks and filters and non-QoS masks and filters consumed on each port.
You can determine whether an application that requires filter resources can
be enabled on a port by verifying that the number of available masks and
filters meet the mask and filter requirements of that particular application.
On the Ethernet Routing Switch 5500 Series switches, the available masks
and filters available on a port can be determined by adding the total number
of QoS and non QoS masks in use and the total number QoS and non QoS
filters in use on a port and then subtracting that number from 16 masks
and 128 filters, respectively.
On the Ethernet Routing Switch 5600 Series switches, the output of the
show qos diag allows you to count the unused masks to determine the
number of available masks for a particular port. The 5600 Series switches
share resources across a group of ports. The filters used by QoS or non
QoS applications on a port for a specific mask determine the available filters
for that mask for all ports from that group.
On the Ethernet Routing Switch 5600 Series switches, you can determine
the number of the filters available for a maskfrom a group of ports by adding
the total number of QoS and Non QoS filters in use and subtracting that
number from 256. If the number of filters in use for a mask is equal to 256,
that mask cannot be used on other ports from the same group.
On the Ethernet Routing Switch 5500 Series switches, to enable IP Source
Guard on a port requires 1 mask and 10 filters. To verify that IP Source
Guard can be enabled on port 5, you can view the show qos diag output
display and determine that port 5 is currently using a total of 4 masks (QoS
plus non-QoS) and 5 filters (QoS plus non-QoS). This means that 12 masks
and 123 filters are available for use, which meets the IP Source Guard
requirement of 1 mask and 10 filters. The following figure shows the showqos diag display before enabling IP Source Guard on port 5.
The following figure shows the show qos diag display after enabling
IP Source Guard on port 5.
Figure 2
show qos diag after
On the Ethernet Routing Switch 5600 Series switches, to enable IP Source
Guard on a port requires 1 mask and 11 filters. To verify that IP Source
Guard can be enabled on port 5, you can view the show qos diag output
display and determine that port 5 is currently using a total of 4 masks (QoS
plus non-QoS). IP Source Guard uses the next available mask and from the
output display, you can see that there are 256 filters available for mask 14,
which meets the IP Source Guard requirement of 1 mask and 11 filters.
The following figures show the show qos diag display before enabling
IP Source Guard on port 5.
Figure 3
show qos diag before
Figure 4
show qos diag before continued
The following figures show the show qos diag display after enabling
IP Source Guard on port 5.
The QoS Interface Security application targets a number of common
network attacks. Support includes ARP spoofing prevention, DHCP
snooping, DHCP spoofing prevention, detection for the common worms
SQLSlam and Nachia; and the Denial of Service (DoS) attacks Xmas,
TCP SynFinScan, TCP FtpPort, and TCP DnsPort. Due to the lack of filter
resources (i.e. masks) to enable the QoS Interface Security application as a
whole, you can select individual security applications.
This application only runs on the Ethernet Routing Switch 5500 Series
switches.
The following table summarizes the mask and filter resource requirements
for individual QoS Interface Security applications.
ARP Spoofing Prevention
DHCP Snooping
DHCP Spoofing Prevention
DoS SQL Slam
DoS Nachia
DoS Xmas
DoS TCP SynFinScan
DoS TCP FtpPort
Dos TCP DnsPort
QoS BPDU blocker interface
Publication: NN47200-400
Document status: Standard
Document version: 04.01
Document date: 12 December 2008
To provide feedback or report a problem in this document, go to www.nortel.com/documentfeedback.
Sourced in Canada and the United States of America.
The information in this document is subject to change without notice. Nortel Networks reserves the right to make changes in design
or components as progress in engineering and manufacturing may warrant.
*Nortel, Nortel Networks, the Nortel logo, and the Globemark are trademarks of Nortel Networks.
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