Specifications

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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
switch(config-router-neighbor)# maximum-peers 10
switch(config-router-neighbor)# address-family ipv4 unicast
switch(config-router-neighbor-af)#
Use the show ip bgp neighbor command to show the details of the configuration for that prefix peering
with a list of the currently accepted instances and the counts of active, maximum concurrent, and total
accepted peers.
Configuring BGP Authentication
You can configure BGP to authenticate route updates from peers using MD5 digests.
To configure BGP to use MD5 authentication, use the following command in neighbor configuration
mode:
Resetting a BGP Session
If you modify a route policy for BGP, you must reset the associated BGP peer sessions. If the BGP peers
do not support route refresh, you can configure a soft reconfiguration for inbound policy changes. Cisco
NX-OS automatically attempts a soft reset for the session.
To configure soft reconfiguration inbound, use the following command in neighbor address-family
configuration mode:
To reset a BGP neighbor session, use the following command in any mode:
Command Purpose
password [0 | 3 | 7] string
Example:
switch(config-router-neighbor)# password
BGPpassword
Configures an MD5 password for BGP neighbor
sessions.
Command Purpose
soft-reconfiguration inbound
Example:
switch(config-router-neighbor-af)#
soft-reconfiguration inbound
Enables soft reconfiguration to store the inbound
BGP route updates. This command triggers an
automatic soft clear or refresh of BGP neighbor
sessions.
Command Purpose
clear bgp ip {unicast | multicast}
ip-address soft {in | out}
Example:
switch# clear bgp ip unicast 192.0.2.1
soft in
Resets the BGP session without tearing down the
TCP session.