mpls label mode

Use this command to configure label allocation mode for VPNv4 and/or VPNv6 routes. Label allocation mode as per-vrf is the default mode in which single mpls-label is allocated for all VPN Routes in a VRF. Label allocation mode as per-prefix will allocate unique mpls-labels per VPN route in a VRF. If allocation model is disabled using no mpls label mode configuration, the configuration reverts back to default-mode .

Label allocation mode is the local property i.e. the VRF routes are distributed to BGP-peer as per the mode configured on local node. When per-vrf mode is configured, single label for all routes in the VRF will be distributed to peer node.

Label allocation mode can be set for all VRFs or selective VRFs by these commands:

mpls label mode vpnv4 all-vrfs per-vrf

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If the admin selects the per-vrf mode for the entire system, then all VRFs switches to per-vrf allocation mode except for the VRFs that has been explicitly configured using command mpls label mode vpnv4 vrf WORD per-prefix. Label allocation mode set using specific VRF takes precedence over all-vrf command.

mpls label mode vpnv6 vrf WORD per-vrf

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If the admin selects per-vrf mode for a particular vrf say vrf1, then only vrf1 switches to per-vrf mode and rest of the vrfs will remain in default allocation mode.

The CLI requires an explicit clear ip bgp command to observe the impact of the mode change in the Route Reflector (RR) or ASBR context. However, in the PE node role, the change is applied automatically. For RR/ASBR node roles, a manual trigger is necessary.

Command Syntax

Parameters

vrf WORD

Enter a string to identify the VRF

all-vrfs

All the VRFs

per-prefix

Unique MPLS labels are allocated per VPN route in a VRF

per-vrf

Single MPLS labels are allocated for all VPN routes in a VRF

all-afs

All the address families

Default

Enabled

Command Mode

Configure mode

Applicability

This command was introduced before OcNOS version 3.0.

Example