Switch Port Mirroring On The Blackdiamond 8800 Family Of Switches And The Summit X450 Switch Only; Switch Port Mirroring - Extreme Networks ExtremeWare XOS Guide Manual

Configuring Slots and Ports on a Switch
Port mirroring configures the switch to copy all traffic associated with one or more ports. The monitor
port can then be connected to a network analyzer or RMON probe for packet analysis. The system uses
a traffic filter that copies a group of traffic to the monitor port. You can have only one monitor port on
the switch.
Up to 16 mirroring filters and 1 monitor port can be configured.
NOTE
On the BlackDiamond 8800 family of switches and the Summit X450 switch, you can mirror only 8 VLANs on a
given port.
Switch port mirroring is disabled by default.
NOTE
Frames that contain errors are not mirrored.
Switch Port Mirroring on the BlackDiamond 8800 Family of
Switches and the Summit X450 Switch Only
The traffic filter on the BlackDiamond 8800 family of switches and the Summit X450 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
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monitor port. You can specify which traffic the port mirrors:
Ingress—Mirrors traffic received at the port.
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Egress—Mirrors traffic sent from the port.
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Ingress and egress—Mirrors all traffic forwarded by the port.
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(If you omit the optional parameters, all traffic is forwarded; the default for port-based mirroring
is ingress and egress).
VLAN—All data to a particular VLAN, regardless of the physical port configuration, is copied to the
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monitor port.
Virtual port—All data specific to a VLAN on a specific port is copied to the monitor port.
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Only 8 VLANs can be mirrored on a given physical port.
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Only traffic ingressing a VLAN can be monitored; you cannot specify ingressing or egressing traffic
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when mirroring VLAN traffic.
When routing between VLANs, ingress mirrored traffic is presented to the monitor port as modified
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for routing.
When you specify the ingress traffic, the packet is mirrored after it is modified by the ingress process
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and may include internal tagging and/or egress tagging.
Even if you select ingress and egress traffic, the packet is mirrored only the first time it matches a
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mirror filter and is not mirrored on subsequent configured filters.
You cannot include the monitor port for the BlackDiamond 8800 family of switches or a Summit
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X450 switch in a load-sharing group.
You cannot run sFlow and mirroring on the same switch. If you attempt to enable mirroring on a
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switch that is already enabled for sFlow, the switch returns the following message:
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ExtremeWare XOS 11.3 Concepts Guide