The peer capability-advertise add-path command enables BGP Add-Path function.
The undo peer capability-advertise add-path command restores the default setting.
By default, the Add-Path function is disabled.
peer ipv4-address capability-advertise add-path { both | receive | send }
peer ipv6-address capability-advertise add-path { both | receive | send }
undo peer ipv4-address capability-advertise add-path { both | receive | send }
undo peer ipv6-address capability-advertise add-path { both | receive | send }
| Parameter | Description | Value |
|---|---|---|
| ipv4-address |
Specifies the IPv4 address of a peer. |
The value is in dotted decimal notation. |
| both |
Enables the RR to receive Add-Path routes from and send Add-Path routes to a specified IBGP peer. |
- |
| receive |
Enables the RR to receive Add-Path routes from a specified IBGP peer. |
- |
| send |
Enables the RR to send Add-Path routes to a specified IBGP peer. |
- |
| ipv6-address |
Specifies the address of the IPv6 peer to be displayed. |
The value is a 32-digit hexadecimal number, in the format of X:X:X:X:X:X:X:X. |
Usage Scenario
There are multiple optional BGP functions when a BGP peer advertises routes to its peer. The optional BGP functions include route-refresh, general function, 4-byte AS number, and Add-Path. You can run the peer capability-advertise command to select one of the functions based on the needs on the live network.
Precautions
If a peer is specified when the peer capability-advertise add-path command is run, a peer group is specified when the peer advertise best-external command is run, and then the peer is added to the peer group, the peer cannot inherit the configuration of the peer advertise best-external command from the peer group.
<HUAWEI> system-view [~HUAWEI] bgp 100 [*HUAWEI-bgp] peer 1.1.1.1 as-number 100 [*HUAWEI-bgp] ipv4-family mvpn [*HUAWEI-bgp-af-mvpn] peer 1.1.1.1 enable [*HUAWEI-bgp-af-mvpn] peer 1.1.1.1 capability-advertise add-path receive