Extreme Networks ExtremeWare XOS Command Reference Manual page 356

ExtremeWare XOS 11.5 supports only the Summit X450 family of switches and the BlackDiamond 8800 series switch.
Commands for Configuring Slots and Ports on a Switch
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 a Summit X450 family of switches in a load-sharing group.
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You cannot run sFlow and mirroring on the same switch on the Summit X450 series switch. If you
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attempt to enable mirroring on these devices 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!
You can run mirroring and sFlow on the same device when you are running one of the following:
Summit X450a and X450e series switch
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Tagged and untagged traffic is mirrored slightly differently depending on the switch that the
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mirrored port and the monitor port are on:
With a monitor port on a Summit X450 series switch (original Summit X450 switch), all traffic
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egressing the monitor port is tagged. 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.
With a monitor port on a Summit X450a or X450e-series switch, the mirrored packet is tagged
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only if the ingress packet is tagged (regardless of what module the ingressing port is on). If the
packet arrived at the ingress port as untagged, the packet egress the monitor port as untagged.
BlackDiamond 8800 series switch only. The traffic filter on the BlackDiamond 8800 series 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.
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ExtremeWare XOS 11.5 Command Reference Guide