VLAN considerations
• If a RSPAN VLAN is used in a PMT RSPAN instance, it cannot be deleted. The RSPAN
instance must be deleted first.
• RSPAN destination port cannot be removed from the RSPAN VLAN while involved in the
RSPAN instance.
• RSPAN destination port membership cannot be changed unless the instance is deleted
first.
• A SPBM B-VLAN or spbm-switchedUni VLAN can not be a RSPAN VLAN.
• A RSPAN VLAN cannot be set as a management VLAN.
• Mapping of an RSPAN VLAN over an SPB ISID and transport over an SPB cloud is not
supported.
RSPAN commands
Use the RSPAN commands to assist in diagnostics and information gathering.
See Configuring System Monitoring on Avaya Ethernet Routing Switch 4000 Series,
NN47205-502 for RSPAN command information.
Port statistics
Use port statistics commands to display information about received and transmitted packets
at the ports. The ingress and egress counts occur at the MAC layer. Count updates occur once
every second.
For more information regarding port statistics and commands, see Configuring System
Monitoring on Avaya Ethernet Routing Switch 4000 Series, NN47205-502.
Stack loopback testing
The stack loopback tests help you determine if the cause of your stacking problem is a bad
stack cable or a damaged stack port.
There are two types of stack loopback tests: internal loopback test and external loopback test.
The purpose of the internal loopback test is to verify that the stack ports are functional in each
switch. The purpose of the external loopback test is to verify that the stack cables are
functional.
Troubleshooting tools
28 Troubleshooting Avaya ERS 4000 Series April 2014
Comments? infodev@avaya.com
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