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 BGP Add-Path function is disabled.
| Parameter | Description | Value |
|---|---|---|
| peerGroupName |
Specifies the name of a peer group. |
The name is a string of 1 to 47 case-sensitive characters, with spaces not supported. When double quotation marks are used around the string, spaces are allowed in the string. |
| 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. |
- |
Usage Scenario
There are multiple optional BGP functions when a BGP peer advertises routes to its peer. The optional BGP functions include Add-Path. You can run the peer capability-advertise add-path command to enable or disable Add-Path function based on the needs on the live network.
Prerequisites
Enable the peer group in current view using peer enable command.
Configuration Impact
If you enable or disable the Add-Path function, the BGP peer relationship will be re-established, which can lead to a temporary network interruption. Therefore, exercise caution when running the related commands.
<HUAWEI> system-view [~HUAWEI] bgp 100 [*HUAWEI-bgp] peer 1.1.1.1 as-number 100 [*HUAWEI-bgp] peer 2.2.2.2 as-number 100 [*HUAWEI-bgp] group gp1 [*HUAWEI-bgp] l2vpn-family evpn [*HUAWEI-bgp-af-evpn] peer 1.1.1.1 group gp1 [*HUAWEI-bgp-af-evpn] peer 2.2.2.2 group gp1 [*HUAWEI-bgp-af-evpn] peer gp1 enable [*HUAWEI-bgp-af-evpn] peer gp1 capability-advertise add-path receive