Cisco Router IOS XR Manuale Utente Scaricare il pdf (Pagina 86)

Cisco IOS XR Training Page 86

For this example, we will call our VRF R3R4 since we are connecting R3 (CE1)

and R4 (CE2).

PE1 up first:

RP/0/RSP0/CPU0:R1#conf t

Fri Apr 20 01:38:35.869 UTC

Lets define the name of our VRF

RP/0/RSP0/CPU0:R1(config)#vrf R3R4

Now we need to configure the appropriate address family, ipv4 unicast.

RP/0/RSP0/CPU0:R1(config-vrf)# address-family ipv4 unicast

Now we need to define our route-targets that we are going to import, and

export. What is a route-target? Quickly it is a 64-bit BGP community that is

used for tagging prefixes, making every prefix unique and also allows the

remote PE routers to know what routes belong to what VRF (import).

For this example, we will use 100:100 for both.

RP/0/RSP0/CPU0:R1(config-vrf-af)# import route-target

RP/0/RSP0/CPU0:R1(config-vrf-import-rt)# 100:100

RP/0/RSP0/CPU0:R1(config-vrf-import-rt)# export route-target

RP/0/RSP0/CPU0:R1(config-vrf-export-rt)# 100:100

And commit the changes.

RP/0/RSP0/CPU0:R1(config-vrf-export-rt)#commit

Fri Apr 20 01:38:39.866 UTC

Now we can create the same VRF with the same route-targets:

RP/0/RSP0/CPU0:R2(config)#vrf R3R4

RP/0/RSP0/CPU0:R2(config-vrf)# address-family ipv4 unicast

RP/0/RSP0/CPU0:R2(config-vrf-af)# import route-target

RP/0/RSP0/CPU0:R2(config-vrf-export-rt)# 100:100

RP/0/RSP0/CPU0:R2(config-vrf-export-rt)# export route-target

RP/0/RSP0/CPU0:R2(config-vrf-export-rt)# 100:100

RP/0/RSP0/CPU0:R2(config-vrf-export-rt)#comm

Fri Apr 20 01:45:18.380 UTC

Ok, time to check to see if the VRF is there:

RP/0/RSP0/CPU0:R2#sh vrf R3R4

Fri Apr 20 01:45:52.204 UTC

VRF RD RT AFI SAFI

R3R4 100:100 import 100:100 IPV4 Unicast

export 100:100 IPV4 Unicast

RP/0/RSP0/CPU0:R2#

Yup, we have a VRF. Now we can assign the interfaces facing the CE routers

to the appropriate VRF, configure the IP addresses, and then do a PING test

across the interface.

1 2 ... 81 82 83 84 85 86 87 88 89 90 91 ... 104 105

Nessun commento

Cisco Router IOS XR Manuale Utente Pagina 86