Enables an additional-paths capability for all peers in a Border Gateway Protocol (BGP) address family.
Peer devices configured under a BGP address family are not capable of receiving or sending additional-paths.
BGP address-family IPv4 unicast configuration mode
BGP address-family IPv4 unicast VRF configuration mode
BGP address-family IPv6 unicast configuration mode
BGP address-family IPv6 unicast VRF configuration mode
Note
Changes to the additional-paths capability for peers in a BGP address family take effect only after the BGP session is restarted.Peers exchange and negotiate additional-path capability during session establishment.
Additional-paths can be enabled as receive only, send only, or both receive and send.
The no form of the command disables the specified (receive or send) additional-paths capability.
To remove the configuration when both the receive and send options have been set, you should enter both the no additional-paths command, specifying the receive option to disable the receive additional-paths capability, and the no additional-paths command, specifying the send option to disable the send additional-paths capability.
The following example shows how to enable peers configured under the IPv4 unicast address family to both receive and send additional-paths.
device# configure terminal device(config)# router bgp device(config-bgp-router)# address-family ipv4 unicast device(config-bgp-ipv4u)# additional-paths receive send
The following example shows how to disable the capability to receive additional-paths for all peers in the IPv4 unicast address family.
device# configure terminal device(config)# router bgp device(config-bgp-router)# address-family ipv4 unicast device(config-bgp-ipv4u)# no additional-paths receive