HPE FlexNetwork 5510 HI Series Mpls Configuration Guide

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Configuring inter-AS option B
To configure inter-AS option B, configure PEs and ASBRs.
• PE configuration:
Configure basic MPLS L3VPN, and specify the ASBR in the same AS as an MP-IBGP peer.
The route targets for the VPN instances on the PEs in different ASs must match for the same
VPN. For more information about PE configuration, see "Configuring basic MPLS L3VPN."
• ASBR configuration:
 Configure a routing protocol, and enable MPLS and LDP on the interface connecting to an
internal router of the AS.
 Specify the PE in the same AS as an MP-IBGP peer, and the ASBR in a different AS as an
MP-EBGP peer.
 Disable VPN target filtering for VPNv4 routes so the ASBR can maintain all VPNv4 routes
and advertise the routes to the peer ASBR.
 Enable MPLS on the interface connected to the remote ASBRs. There is no need to
configure a label distribution protocol, for example, MPLS LDP.
An ASBR always sets itself as the next hop of VPNv4 routes advertised to an MP-IBGP peer
regardless of the peer next-hop-local command.
To configure inter-AS option B on an ASBR:
Step
Command
Remarks
1. Enter system view.
system-view
N/A
2.
Enter interface view of the
interface connected to an
internal router of the AS.
interface
interface-type
interface-number
N/A
3. Enable MPLS on the
interface.
mpls enable
By default, MPLS is disabled on
the interface.
4. Enable MPLS LDP on the
interface.
mpls ldp enable
By default, MPLS LDP is disabled
on the interface.
5. Return to system view.
quit
N/A
6.
Enter interface view of the
interface connecting to the
remote ASBR.
interface
interface-type
interface-number
N/A
7. Enable MPLS on the
interface.
mpls enable
By default, MPLS is disabled on
the interface.
8. Return to system view.
quit
N/A
9. Enter BGP view.
bgp
as-number N/A
10. Create a BGP peer.
peer
{ group-name | ip-address
[ mask-length ] }
as-number
as-number
By default, no BGP peer is
configured.
Configure PEs in the same AS as
IBGP peers, and ASBRs in
different ASs as EBGP peers.
11. Enter BGP
VPNv4 address
family view.
address-family vpnv4
N/A
12.
Enable BGP to exchange
VPNv4 routes with the PE in
the same AS and the ASBR
in different ASs.
peer
{ group-name | ip-address
[ mask-length ] }
enable
By default, BGP cannot exchange
VPNv4 routing information with a
peer.

HPE FlexNetwork 5510 HI Series Specifications

General

Brand	HPE
Model	FlexNetwork 5510 HI Series
Category	Switch
Language	English