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Troubleshooting Port Mirroring Configuration Error Messages
Troubleshooting issues with port mirroring on EX Series switches:
An Analyzer Configuration Returns a “Multiple interfaces cannot be configured as a member of Analyzer output VLAN” Error Message
Problem
In an analyzer configuration, if the VLAN to which mirrored traffic is sent contains more than one member interface, the following error message is displayed in the CLI when you commit the analyzer configuration and the commit fails:
Multiple interfaces cannot be configured as a member of Analyzer output VLAN <vlan name>
Solution
You must direct the mirrored traffic to a VLAN that has a single member interface. You can do this by completing either of these tasks:
- Reconfigure the existing VLAN to contain a single member interface. You can choose this method if you want to use the existing VLAN.
- Create a new VLAN with a single member interface and associate the VLAN with the analyzer.
To reconfigure the existing VLAN to contain only one member interface:
- Remove member interfaces from the VLAN repeatedly by using
either the delete vlan command or the delete interface command until the VLAN contains a single member interface:
[edit]
user@switch# delete vlan vlan-id interface interface-name[edit]
user@switch# delete interface interface-name unit 0 family family-name vlan member vlan-id
- (Optional) Confirm that the VLAN contains only one interface:
[edit]
user@switch# show vlans vlan-nameThe output for this command must display only one interface.
To create a new VLAN with a single member interface:
- Configure a VLAN to carry the mirrored traffic:
[edit]
user@switch# set vlans vlan-name - Associate an interface with the VLAN:
[edit]
user@switch# set interfaces interface-name unit logical-unit-number family family-name vlan members vlan-name - Associate the VLAN with the analyzer:
[edit ethernet-switching-options]
user@switch# set analyzer analyzer-name output vlan vlan-name
