Configuring Inter-AS Kompella VPLS in OptionA Mode
Pre-configuration Task
Before configuring inter-AS Kompella VPLS in OptionA mode, complete the following tasks:
- Configure IGP for the MPLS backbone network of each AS to ensure IP connectivity of the backbone network within an AS.
- Configure basic MPLS functions on the MPLS backbone network of each AS.
- Establish a tunnel between the PE and ASBR within an AS.
Context
The configuration is described as follows:
- Configuring BGP VPLS in each AS.
- An ASBR considers a peer ASBR as a CE.
- VSIs are configured on the PE and ASBR, and these VSIs are bound to AC interfaces. The VSI for PE is used to access CE; the VSI for ASBR is used to access the peer ASBR.
The configuration details are not mentioned here.
- In the inter-AS VPLS OptionA, the VPN targets of the ASBRs and PEs in the same AS must match; the VPN targets of the PEs in different ASs do not need to match.
- In inter-AS Martini VPLS OptionA, each ASBR must reserve an AC interface for each inter-AS VC. OptionA can be used when the number of inter-AS VCs is small. Compared with the L3VPN, the inter-AS L2VPN OptionA consumes more resources and requires more configuration workload. Therefore, the inter-AS L2VPN OptionA is not recommended.
Verifying the Configuration
- Run the display bgp vpls group [ group-name ] command to check the BGP VPLS peer group relationship on a PE or an ASBR PE.
- Run the display bgp vpls peer [ [ ipv4-address ] verbose ] command to check the BGP VPLS peer relationship on a PE or an ASBR PE.
- Run the display bgp vpls all command to check BGP VPLS label blocks on a PE or an ASBR PE.
- Run the display vpls connection [ bgp | vsi vsi-name ] [ down | up ] [ verbose ] command to check the VPLS connection on a PE.
- Run the display bgp routing-table label command to check label information about IPv4 routes on a PE or an ASBR PE.
- Run the ping vpls mac mac-address vsi vsi-name [ vlan vlan-id | -c count | -m time-value | -s packsize | -t timeout | -exp exp | -r replymode ] * command to check the connectivity of Layer 2 links on the VPLS network.
- Run the trace vpls mac mac-address vsi vsi-name [ vlan vlan-id ] [-t timeout | -f first-ttl | -m max-ttl | -exp exp | -r replymode ] * command to check the PEs and P that packets pass from the sender to the receiver and check the connectivity of Layer 2 links, which helps locate the faulty node on the network.
In OptionA mode, the ping and trace functions support intra-AS detection.