enable bgp peer-group capability

enable bgp peer-group peer-group-name capability [ipv4-unicast | ipv4-multicast |ipv6-unicast | ipv6-multicast |vpnv4 |route-refresh ]


This command enables BGP Multiprotocol (MP) and route-refresh capabilities for a peer-group.

Syntax Description

peer-group-name Specifies a peer group.
ipv4-unicast Specifies the IPv4 unicast address family.
ipv4-multicast Specifies an IPv4 multicast address family.
ipv6-unicast Specifies the IPv6 unicast address family.
ipv6-multicast Specifies an IPv6 multicast address family.
route-refresh Specifies ROUTE-REFRESH message capabilities.
vpnv4 Specifies the VPNv4 address family for Layer 3 VPN support.


All capabilities are enabled for IPv4 peer groups by default.

The route refresh capability is enabled for IPv6 peer groups by default.

Usage Guidelines

This command enables BGP Multiprotocol or route-refresh capabilities for a peer group. When you change the capability configuration, you must enable the BGP peer group before the configuration becomes active. If the BGP peer group was enabled before the change, you must disable and enable the BGP peer group. After the capabilities have been enabled, the BGP peer announces its capabilities to neighbors in an OPEN message.

When one or more address families are enabled, routes from the specified address families are updated, accepted, and installed. If more than one address family capability is enabled,or if the VPNv4 address family is enabled,the MBGP extension is automatically enabled. To disable MBGP, you must disable all enabled address families.

A peer group can be configured for either IPv4 or IPv6 address families, but not both. Because a peer-group cannot support both IPv4 and IPv6 peers, the switch prevents the enabling of address families that are not compatible with peers that are already in the peer-group. Similarly if a particular address family is enabled for the peer-group, a peer that is incompatible with the existing peer-group configuration cannot be added to the group.

To support Layer 3 VPNs, you must enable the VPNv4 address family for all MBGP peers that will distribute VPNv4 routes across the service provider backbone. The VPNv4 address family must be enabled on the MPLS-enabled VR; it is not supported for BGP neighbors on the CE (VRF) side of the PE router.

This command applies to the current VR or VRF context.



To inter-operate with Cisco routers for BGP graceful restart, you must enable IPv4 unicast address capability.


The following command enables the route-refresh feature for the peer group outer:

enable bgp peer-group outer capability route-refresh

The following command enables the VPNv4 address family for a peer group:

enable bgp peer-group backbone capability vpnv4


This command was first available in ExtremeXOS 10.1.

This command required a specific license in ExtremeXOS 11.1.

Support for IPv6 was added in ExtremeXOS 12.6 BGP.

Support for Layer 3 VPNs was added in ExtremeXOS 15.3.

Platform Availability

This command is available on platforms that support the appropriate license. For complete information about software licensing, including how to obtain and upgrade your license and which licenses support the BGP feature, see the Switch Engine 32.3 Feature License Requirements document.