Extreme Networks ExtremeWare XOS 11.3, Manual

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Switch Port Mirroring
ExtremeWare XOS 11.3 Concepts Guide
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Mirroring is not compatible with SFlow. Mirroring is not enabled!
All traffic egressing the monitor port is tagged on the BlackDiamond 8800 family of switches and the
Summit X450 switch. Even if some untagged ports send mirrored traffic to the monitor port, that traffic
also egresses the monitor port tagged with the internal VLAN ID.
Switch Port Mirroring on the BlackDiamond 10K Switch Only
The traffic filter on the BlackDiamond 10K switch can be defined based on one of the following criteria:
●
Physical port—All data that traverses the port, regardless of VLAN configuration, is copied to the
monitor port.
●
VLAN—All data to and from a particular VLAN, regardless of the physical port configuration, is
copied to the monitor port.
●
Virtual port—All data specific to a VLAN on a specific port is copied to the monitor port.
●
The master port of the load-sharing group can be the monitor port for port-mirroring.
●
You cannot run sFlow and mirroring on the same port. If you attempt to enable mirroring on a port
that is already enabled for sFlow, the switch returns the following message:
Mirroring is not compatible with SFlow. Mirroring is not enabled!
The monitor port transmits tagged or untagged frames, according to the way you configured the
monitor port. This feature allows you to mirror multiple ports or VLANs to a monitor port, while
preserving the ability of a single protocol analyzer to track and differentiate traffic within a broadcast
domain (VLAN) and across broadcast domains (for example, across VLANs when routing).
NOTE
The monitor port on the BlackDiamond 10K switch must be explicitly configured for tagged or untagged frames
beginning with ExtremeWare XOS version 11.0.
The traffic egressing the monitor port can be either tagged or untagged. If the mirroring is enabled as
tagged on the monitor port, all traffic egressing the monitor port is tagged. In this case, even if some
untagged ports send mirrored traffic to the monitor port, that traffic also egresses the monitor port as
tagged. And, if mirroring is enabled as untagged on the monitor port, all traffic egressing the monitor
port is untagged, including mirrored tagged packets.
When you upgrade to ExtremeWare XOS 11.0 on the BlackDiamond 10K switches, all restored mirroring
configurations are tagged on the monitor ports.
Switch Port-Mirroring Rules and Restrictions for All Switches
This section summarizes the rules and restrictions for configuring switch port mirroring:
●
When you disable mirroring, all the filters are unconfigured.
●
To change monitor ports, you must first remove all the filters.
●
You cannot mirror the monitor port.
●
The mirroring configuration is removed when you:
■
Delete a VLAN (for all VLAN-based filters).
■
Delete a port from a VLAN (for all VLAN-, port-based filters).