Configuring vlan mirroring, Vlan mirroring – Brocade Communications Systems Brocate Ethernet Access Switch 6910 User Manual
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Brocade 6910 Ethernet Access Switch Configuration Guide
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Configuring VLAN Mirroring
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Configuring VLAN Mirroring
Use the VLAN > Mirror (Add) page to mirror traffic from one or more source VLANs to a target port
for real-time analysis. You can then attach a logic analyzer or RMON probe to the target port and
study the traffic crossing the source VLAN(s) in a completely unobtrusive manner.
CLI References
•
“Port Mirroring Commands” on page 301
Command Usage
•
All active ports in a source VLAN are monitored for ingress traffic only.
•
All VLAN mirror sessions must share the same target port, preferably one that is not a member
of the source VLAN.
•
When VLAN mirroring and port mirroring are both enabled, they must use the same target port.
•
When VLAN mirroring and port mirroring are both enabled, the target port can receive a
mirrored packet twice; once from the source mirror port and again from the source mirrored
VLAN.
•
The target port receives traffic from all monitored source VLANs and can become congested.
Some mirror traffic may therefore be dropped from the target port.
•
When mirroring VLAN traffic or packets based on a source MAC address (see
Address Mirroring” on page 756
), the target port cannot be set to the same target ports as that
used for port mirroring (see
“Configuring Local Port Mirroring” on page 679
•
When traffic matches the rules for both port mirroring, and for mirroring of VLAN traffic or
packets based on a MAC address, the matching packets will not be sent to target port
specified for port mirroring.
Parameters
These parameters are displayed:
•
Source VLAN – A VLAN whose traffic will be monitored. (Range: 1-4093)
•
Target Port – The destination port that receives the mirrored traffic from the source VLAN.
(Range: 1-12)
Interface
To configure VLAN mirroring:
1. Click VLAN, Mirror.
2. Select Add from the Action list.
3. Select the source VLAN, and select a target port.
4. Click Apply.