3com 3031 Instruccion De Instalación

C

HAPTER

 54: BGP/MPLS VPN C

ONFIGURATION

■

Advertise and update VPN network information. 

Only static route, RIP, OSPF or EBGP is configured for VPN routing information 
exchange with the PE connected, without MPLS. 

It implements MPLS/BGP VPN core functions, so its configuration is a bit 
complicated, including:

■

Configure MPLS basic capacity, joint maintenance of LSP with P router or other 
PE router

■

Configure BGP/MPLS VPN site, i.e. VPN instance

■

Configure static route, RIP, OSPF or MP-EBGP, for VPN routing information 
exchange with CE. 

■

Configure IGP, for intra-PE interconnection. 

■

Configure MP-IBGP, for VPN routing information exchange between PEs.

MPLS basic capacity is configured, to support LDP and MPLS forwarding.

The following are detailed configurations.

Only basic configuration is required on CE router, for routing information 
exchange with PE router. Currently route switching modes available include static 
route, RIP, OSPF, EBGP, VLAN sub-interface etc. 

If you select static route mode for CE-PE route switching, you should then 
configure a private static route pointing to PE on CE. 

Perform the following in the System View. 

You can also specify preference for a static route. By default, the preference value 
for a static route is 60.

Table 787   Configuring static route in VPN instance routing table

Create a specific vpn-instance 
static route

ip route-static ip-address { mask | 

mask-length } { interface-name | 

gateway-address } [ preference 

preference-value ] [ reject | blackhole ]

Delete a specific vpn-instance 
static route

undo ip route-static ip-address { mask | 

mask-length } [ interface-name | 

gateway-address ] [ preference 

preference-value ]