neighbor attribute-unchanged
Use this command to advertise unchanged BGP attributes to the specified neighbor.
Use the no parameter with this command to disable this function.
For unnumbered peer IPv4 unicast mode commands are configured under v4-unnumbered-mode.
Command Syntax
neighbor (A.B.C.D|X:X::X:X|WORD) attribute-unchanged ({ as-path|next-hop|med }|)
no neighbor (A.B.C.D|X:X::X:X|WORD) attribute-unchanged (({ as-path|next-hop|med }|)For v4-unnumbered mode:
neighbor WORD attribute-unchanged ({ as-path|next-hop|med }|)
no neighbor WORD attribute-unchanged (({ as-path|next-hop|med }|)Parameters
A.B.C.D
Address of the BGP neighbor in an IPv4 format
X:X::X:X
Address of the BGP neighbor in an IPv6 format
WORD
Name of a BGP peer group created with the neighbor WORD peer-group command. When you specify this parameter, the command applies to all peers in the group.
as-path
AS path attribute
next-hop
Nexthop attribute
med
Multi-exit discriminator attribute
Default
By default, the neighbor attribute-unchanged is disabled
Command Mode
Address Family mode and v4-unnumbered mode
Applicability
This command was introduced before OcNOS version 1.3.
Example
#configure terminal
(config)#router bgp 10
(config-router)#address-family ipv4 unicast
(config-router-af)#neighbor 10.10.0.75 attribute-unchanged as-path med
(config)#router bgp 100
(config-router)#address-family ipv4 unicast
(config-router-af)#bgp v4-unnumbered-mode
(config-router-v4-unnum)#OcNOS(config-router-v4-unnum)#neighbor eth1 attribute-unchanged as-path