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Appendix A:Troubleshooting a WSS 687
Nortel WLAN—Security Switch 2300 Series Configuration Guide
The snap-length num option specifies the maximum number of bytes to capture. If you do not specify a length, the
entire packet is copied and sent to the observer. Nortel recommends specifying a snap length of 100 bytes or less.
The following command configures a snoop filter named snoop1 that matches on all traffic, and copies the traffic to the
device that has IP address 10.10.30.2:
WSS# set snoop snoop1 observer 10.10.30.2 snap-length 100
The following command configures a snoop filter named snoop2 that matches on all data traffic between the device with
MAC address aa:bb:cc:dd:ee:ff and the device with MAC address 11:22:33:44:55:66, and copies the traffic to the device
that has IP address 10.10.30.3:
WSS# set snoop snoop2 frame-type eq data mac-pair aa:bb:cc:dd:ee:ff 11:22:33:44:55:66
observer 10.10.30.3 snap-length 100
Displaying configured snoop filters
To display the snoop filters configured on the WSS, use the following command:
show snoop info [filter-name]
The following command shows the snoop filters configured in the examples above:
WSS# show snoop info
snoop1:
observer 10.10.30.2 snap-length 100
all packets
snoop2:
observer 10.10.30.3 snap-length 100
frame-type eq data
mac-pair (aa:bb:cc:dd:ee:ff, 11:22:33:44:55:66)
Editing a snoop filter
To edit a snoop filter, you can use the show configuration area snoop command to display the filter’s configuration
command, then use cut-and-paste to reconstruct the command.
Deleting a snoop filter
To delete a snoop filter, use the following command:
clear snoop filter-name