set snoop 573

„If the snoop filter is running on a Distributed MAP, and the MAP used a DHCP server in its local subnet to configure its IP information, and the MAP did not receive a default gateway address as a result, the observer must also be in the same subnet. Without a default gateway, the MAP cannot find the observer.

„The MAP that is running a snoop filter forwards snooped packets directly to the observer. This is a one-way communication, from the MAP to the observer. If the observer is not present, the MAP still sends the snoop packets, which use bandwidth. If the observer is present but is not listening to TZSP traffic, the observer continuously sends ICMP error indications back to the MAP. These ICMP messages can affect network and MAP performance.

Examples — 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:

WX1200# 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:

WX1200# 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

See Also

„clear snoop on page 570

„set snoop map on page 574

„set snoop mode on page 575

„display snoop info on page 577

„display snoop stats on page 578

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HP Manager Software manual WX1200# set snoop snoop1 observer 10.10.30.2 snap-length