Brocade TurboIron 24X Series Configuration Guide - Manual (Page 755)

Brocade TurboIron 24X Series Configuration Guide 721
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Filtering
If you do not specify the capability, both capabilities are enabled.
The prefixlist parameter specifies the type of filter you want to send to the neighbor.
NOTE
The current release supports cooperative filtering only for filters configured using IP prefix lists.
Sending and receiving ORFs
Cooperative filtering affects neighbor sessions that start after the filtering is enabled, but do not
affect sessions that are already established.
To activate cooperative filtering, reset the session with the neighbor. This is required because the
cooperative filtering information is exchanged in Open messages during the start of a session.
To place a prefix-list change into effect after activating cooperative filtering, perform a soft reset of
the neighbor session. A soft reset does not end the current session, but sends the prefix list to the
neighbor in the next route refresh message.
NOTE
Make sure cooperative filtering is enabled on the Layer 3 Switch and on the neighbor before you
send the filters.
To reset a neighbor session and send ORFs to the neighbor, enter a command such as the
following.
TurboIron#clear ip bgp neighbor 10.2.3.4
This command resets the BGP4 session with neighbor 10.2.3.4 and sends the ORFs to the
neighbor. If the neighbor sends ORFs to the Layer 3 Switch, the Layer 3 Switch accepts them if the
send capability is enabled.
To perform a soft reset of a neighbor session and send ORFs to the neighbor, enter a command
such as the following.
TurboIron#clear ip bgp neighbor 10.2.3.4 soft in prefix-list
Syntax: clear ip bgp neighbor <ip-addr> [soft in prefix-filter]
If you use the soft in prefix-filter parameter, the Layer 3 Switch sends the updated IP prefix list to
the neighbor as part of its route refresh message to the neighbor.
NOTE
If the Layer 3 Switch or the neighbor is not configured for cooperative filtering, the command sends
a normal route refresh message.
Displaying cooperative filtering information
You can display the following cooperative filtering information:
• The cooperative filtering configuration on the Layer 3 Switch.
• The ORFs received from neighbors.
To display the cooperative filtering configuration on the Layer 3 Switch, enter a command such as
the following. The line shown in bold type shows the cooperative filtering status.