Brocade Communications Systems Layer 3 Routing Configuration ICX 6650 - Manual (Page 317)

Brocade ICX 6650 Layer 3 Routing Configuration Guide 299
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Basic configuration tasks required for BGP4
The enable password-display command enables display of the authentication string, but only in the
output of the show ip bgp neighbors command. Display of the string is still encrypted in the
startup-config file and running-config. Enter the command at the global CONFIG level of the CLI.
NOTE
The command also displays SNMP community strings in clear text, in the output of the show snmp
server command.
Adding a BGP4 peer group
A peer group is a set of BGP4 neighbors that share common parameters. Peer groups provide the
following benefits:
• Simplified neighbor configuration – You can configure a set of neighbor parameters and then
apply them to multiple neighbors. You do not need to individually configure the common
parameters individually on each neighbor.
• Flash memory conservation – Using peer groups instead of individually configuring all the
parameters for each neighbor requires fewer configuration commands in the startup-config
file.
You can perform the following tasks on a peer-group basis:
• Reset neighbor sessions
• Perform soft-outbound resets (the Layer 3 switch updates outgoing route information to
neighbors but does not entirely reset the sessions with those neighbors)
• Clear BGP message statistics
• Clear error buffers
Peer group parameters
You can set all neighbor parameters in a peer group. When you add a neighbor to the peer group,
the neighbor receives all the parameter settings you set in the group, except parameter values you
have explicitly configured for the neighbor. If you do not set a neighbor parameter in the peer group
and the parameter also is not set for the individual neighbor, the neighbor uses the default value.
Peer group configuration rules
The following rules apply to peer group configuration:
• You must configure a peer group before you can add neighbors to the peer group.
• If you remove a parameter from a peer group, the value for that parameter is reset to the
default for all the neighbors within the peer group, unless you have explicitly set that parameter
on individual neighbors. In this case, the value you set on the individual neighbors applies to
those neighbors, while the default value applies to neighbors for which you have not explicitly
set the value.