Specifications

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6-27
Cisco Nexus 3000 Series NX-OS Unicast Routing Configuration Guide, Release 5.0(3)U2(2)
OL-25782-02
Chapter 6 Configuring Advanced BGP
Configuring Advanced BGP
This example shows how to configure the router as a route reflector and add one neighbor as a client:
switch(config)# router bgp 65536
switch(config-router)# neighbor 192.0.2.10 remote-as 65536
switch(config-router-neighbor)# address-family ip unicast
switch(config-router-neighbor-af)# route-reflector-client
switch(config-router-neighbor-af)# copy running-config startup-config
Configuring Route Dampening
You can configure route dampening to minimize route flaps propagating through your iBGP network.
To configure route dampening, use the following command in address-family or VRF address family
configuration mode:
Step 8
address-family ipv4 {unicast |
multicast}
Example:
switch(config-router-neighbor)#
address-family ipv4 unicast
switch(config-router-neighbor-af)#
Enters neighbor address family configuration mode for
the unicast IPv4 address family.
Step 9
route-reflector-client
Example:
switch(config-router-neighbor-af)#
route-reflector-client
Configures the switch as a BGP route reflector and
configures the neighbor as its client. This command
triggers an automatic notification and session reset for
the BGP neighbor sessions.
Step 10
show bgp ip {unicast | multicast}
neighbors
Example:
switch(config-router-neighbor-af)#
show bgp ip unicast neighbors
(Optional) Displays the BGP peers.
Step 11
copy running-config startup-config
Example:
switch(config-router-neighbor-af)#
copy running-config startup-config
(Optional) Saves this configuration change.
Command or Action Purpose
Command Purpose
dampening [{half-life reuse-limit
suppress-limit max-suppress-time |
route-map map-name}]
Example:
switch(config-router-af)# dampening
route-map bgpDamp
Disables capabilities negotiation. The parameter
values are as follows:
• half-life—The range is from 1 to 45.
• reuse-limit—The range is from 1 to 20000.
• suppress-limit—The range is from 1 to 20000.
• max-suppress-time—The range is from 1 to
255.