Cisco ASR 9000 Series Routing Configuration Manual page 168

Configuring a VPN Routing and Forwarding Instance in BGP
Command or Action
Step 2
vrf vrf-name
Example:
RP/0/RSP0/CPU0:router(config)# vrf vrf_pe
Step 3 address-family { ipv4 | ipv6 } unicast
Example:
RP/0/RSP0/CPU0:router(config-vrf)#
address-family ipv4 unicast
Step 4 maximum prefix maximum [ threshold ]
Example:
RP/0/RSP0/CPU0:router(config-vrf-af)#
maximum prefix 2300
Step 5 import route-policy policy-name
Example:
RP/0/RSP0/CPU0:router(config-vrf-af)#
import route-policy policy_a
Step 6 import route-target [ as-number : nn |
ip-address : nn ]
Example:
RP/0/RSP0/CPU0:router(config-vrf-af)#
import route-target 234:222
Step 7 export route-policy policy-name
Example:
RP/0/RSP0/CPU0:router(config-vrf-af)#
export route-policy policy_b
Step 8 export route-target [ as-number : nn |
ip-address : nn ]
Example:
RP/0/RSP0/CPU0:routerr(config-vrf-af)#
export route-target 123;234
Step 9 commit
Cisco ASR 9000 Series Aggregation Services Router Routing Configuration Guide, Release 5.3.x
138
Purpose
Configures a VRF instance.
Specifies either the IPv4 or IPv6 address family and enters address
family configuration submode.
To see a list of all the possible keywords and arguments for this
command, use the CLI help (?).
Configures a limit to the number of prefixes allowed in a VRF
table.
A maximum number of routes is applicable to dynamic routing
protocols as well as static or connected routes.
You can specify a threshold percentage of the prefix limit using
the mid-threshold argument.
(Optional) Provides finer control over what gets imported into a
VRF. This import filter discards prefixes that do not match the
specified policy-name argument.
Specifies a list of route target (RT) extended communities. Only
prefixes that are associated with the specified import route target
extended communities are imported into the VRF.
(Optional) Provides finer control over what gets exported into a
VRF. This export filter discards prefixes that do not match the
specified policy-name argument.
Specifies a list of route target extended communities. Export route
target communities are associated with prefixes when they are
advertised to remote PEs. The remote PEs import them into VRFs
which have import RTs that match these exported route target
communities.
Implementing BGP