Specifications

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Cisco IGX 8400 Series Provisioning Guide, Release 9.3.3 and Later Releases
OL-1166-04
Chapter 10 Cisco IGX 8400 Series IP Service
IP Service Provisioning
Configuring the Cisco IGX 8410, 8420, and 8430 ATM LSR for MPLS VPN Operation
For MPLS VPN operation, you must first configure the Cisco IGX 8410, 8420, and 8430 ATM LSR,
including its associated Cisco router LSC for MPLS or for MPLS QoS.
Configure network VPN operation on the edge LSRs that act as PE routers.
The Cisco IGX 8410, 8420, and 8430, including its LSC, requires no configuration beyond enabling
MPLS and QoS.
Configuring VRFs for MPLS VPN Operation
To configure a VRF and associated interfaces, perform these steps on the PE router:
Configuring BGPs for MPLS VPN Operation
To configure a BGP between provider routes for distribution of VPN routing information, perform these
steps on the PE router:
Command Purpose
Step 1
Router(config)# ip vrf vrf-name
Enters VRF configuration mode and specifies the
VRF name to which subsequent commands apply.
Step 2
Router(config-vrf)# rd route-distinguisher
Defines the instance by assigning a name and an
8-byte route distinguisher.
Step 3
Router(config-if)# ip vrf forwarding vrf-name
Associates interfaces with the VRF.
Step 4
Router(config-router)# address-family ipv4 vrf
vrf-name
Configures BGP parameters for the VRF CE session
to use BGP between the PE and VRF CE.
The default setting is off for auto-summary and
synchronization in the VRF address-family
submode.
To ensure that addresses learned through BGP on a
PE router from a CE router are properly treated as
VPN IPv4 addresses, you must enter the command
no bgp default ipv4-activate before configuring CE
neighbors.
Step 5
Router(config-router-af)# exit-address-family
Exits from VRF configuration mode.
Step 6
Router(config)# ip route [vrf vrf-name]
Configures static routes for the VRF.
Command Purpose
Step 1
Router(config-router)# address-family {ipv4|vpn4}
[unicast|multicast]
Configures BGP address families.
Step 2
Router(config-router-af)# neighbor
{address|peer-group} remote-as as-number}
Defines a BGP session.
Step 3
Router(config-router)# no bgp default ipv4-activate
Activates a BGP session. Prevents automatic
advertisement of address family IPv4 for all
neighbors.
Step 4
Router(config-router)# neighbor address remote-as
as-number
Configures a IBGP to exchange VPNv4 NLRIs.