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DES-7200 Configuration Guide Chapter 2 Configuring BGP IP VPN
2-27
Configuring an IGP and MPLS Signaling Protocol in an AS
Setting Up an EBGP Session Between ASBRs to Exchange Labels Through IPv4 Routes
Configuring an ASBR to Redistribute Inter-AS PE Routes Learnt from EBGP to the IGP
Configuring a Multi-Hop MP-EBGP Session
Configuring Route Exchanging Between PEs and CEs
This procedure is similar to Configuring Route Exchanging Between PEs and CEs and is not
described here.
Configuring an IGP and MPLS Signaling Protocol in an AS
This procedure is similar to Configuring an MPLS Network and is not described here.
Setting Up an EBGP Session Between ASBRs to Exchange Labels Through IPv4 Routes
Set up an EBGP session between inter-AS ASBRs and enable label exchanging of IPv4 routes.
To import PE routes to the BGP, you can use the network command in the BGP IPv4 address
family mode or run commands to redistribute IGP routes. In view of the AS security in actual
applications, you are generally required to configure IPv4 route distribution policies on ASBRs.
By configuring route map rules, you can control the routes sent to neighbors and specify whether
the routes carry labels. Similar control is available for receiving routes.
Enter the privilege mode and perform the following configuration procedure:
Command Function
DES-7200# configure terminal
Enter the global configuration mode.
DES-7200(config)# router bgp
asn-num
Enable BGP and enter the BGP configuration mode.
DES-7200(config-router)#
neighbor asbr-address
remote-as asbr-asn-num
Set up an EBGP session with an ASBR.
DES-7200(config-router)#addres
s-family ipv4
Enter the BGP IPv4 address family configuration
mode.
DES-7200(config-router-af)#
neighbor
asbr-address send-label
Configure the device to exchange labeled IPv4 routes
with the ASBR peer in another AS.
DES-7200(config-router-af)#
network pe-address mask mask
(Optional) Configure PE addresses to be imported
into the BGP routing table in the local AS, that is, host
routes of each PE in the AS.