peer mpls-local-ifnet disable
Function
The peer mpls-local-ifnet disable command disables EBGP peers from establishing an MPLS local Ifnet tunnel between them.
The undo peer mpls-local-ifnet disable command enables EBGP peers to establish an MPLS local Ifnet tunnel between them.
EBGP peers are enabled to exchange labeled routes.
EBGP peers are configured in the BGP-VPLS address families.
EBGP peers are configured in the BGP-VPNv4 or BGP-VPNv6 address family.
Format
peer { group-name | ipv4-address } mpls-local-ifnet disable
undo peer { group-name | ipv4-address } mpls-local-ifnet disable
Parameters
| Parameter | Description | Value |
|---|---|---|
| group-name | Specifies the name of a BGP 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. |
| ipv4-address | Specifies the IPv4 address of a BGP peer. | The value is in dotted decimal notation. |
Usage Guidelines
Usage Scenario
MPLS local Ifnet tunnel: In inter-AS VPN Option B or Option C scenarios, the VPN routes with L2VPN label block information that ASBRs advertise to BGP peers must contain public-network tunnel information. However, no tunnels are configured between ASBRs. To allow EBGP routes to be advertised to IBGP peers, an MPLS local Ifnet tunnel is generated between MPLS interfaces of ASBRs.
In the IPv4/IPv6 VPN Option C, L3VPN over inter-as seamless MPLS, or VPLS scenario, EBGP peer relationships are established between BGP peers. The BGP peers can be endpoint PEs in the VPLS or VPN Option C scenario or the CSG and MASG in the inter-AS seamless MPLS scenario. These EBGP peers automatically establish MPLS local Ifnet tunnels between them. The E2E MPLS local Ifnet tunnel fails to transmit traffic if the two peers are indirectly connected.
If a fault occurs on a tunnel between the two EBGP peers, traffic is iterated to the MPLS local Ifnet tunnel, not an FRR bypass tunnel. As the MPLS local Ifnet tunnel cannot forward traffic, traffic is interrupted. To prevent the traffic interruption, run the peer mpls-local-ifnet disable command to disable the establishment of an MPLS local Ifnet tunnel between the EBGP peers.
Prerequisites
The BGP session must be in the Established state.