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DES-7200 Configuration Guide Chapter 2 Configuring BGP IP VPN
2-35
DES-7200(config-router-af)# exit
# Configure an ASBR to set up an MP-IBGP session with the PE at 10.10.10.1 in the local AS.
DES-7200# configure terminal
DES-7200(config)# router bgp 1
DES-7200(config-router)# neighbor 10.10.10.1 remote-as 1
DES-7200(config-router)# neighbor 10.10.10.1 update-source loopback 0
DES-7200(config-router)# address-family ipv4
DES-7200(config-router-af)# neighbor 10.10.10.1 send-label
DES-7200(config-router-af)# end
Setting Up an EBGP Session Between ASBRs to Exchange Labels Through IPv4 Routes
This procedure is similar to Setting Up an EBGP Session Between ASBRs to Exchange Labels
Through IPv4 Routesin Scheme 1 and is not described here.
Configuring a Multi-Hop MP-EBGP Session
This procedure is similar to Configuring a Multi-Hop MP-EBGP Sessionin Scheme 1 and is not
described here.
Scheme 3: Setting Up a Multi-Hop MP-EBGP Session Between RRs
In the traditional OptionC scheme, the inter-AS VPN sites should be connected in full mesh
mode. The addition of a single VPN site requires the setup of MP-MBGP connections with the
PEs in other ASs, hindering the expansion of VPN sites. In this case, you can deploy an RR in
each AS to solve this problem. Set up multi-hop MP-EBGP sessions between the RRs to
exchange VPN routes.
Figure 11 Setting up a multi-hop MP-EBGP session between RRs in OptionC mode