Configuring BGP/RIP between two VRFs

[Cisco Enthusiast]

Hello Everyone, i'm having a trouble configuring

BGP and RIP

between two VRFs .The idea was to configure as many protocols and get hands-on experince using only one router.

This is my configuration:

version 15.0
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname myrouter
!
boot-start-marker
boot-end-marker
!
enable secret xxx
enable password xxx
!
no aaa new-model
!
no ipv6 cef
ip source-route
ip cef
!
!
ip vrf blue
rd 65000:1
bgp next-hop Loopback1
!
ip vrf red
rd 65000:2
bgp next-hop Loopback2
!
!
!
multilink bundle-name authenticated
!
!
!
license udi pid CISCO1921/K9 sn xxx
!
!
!
!
!
!
!
!
interface Loopback1
ip vrf forwarding red
ip address 10.0.0.1 255.255.255.255
ip rip send version 2
ip rip receive version 2
!
interface Loopback2
ip vrf forwarding blue
ip address 10.0.0.2 255.255.255.255
ip rip send version 2
ip rip receive version 2
!
interface Loopback10
ip address 128.0.0.1 255.255.0.0
!
interface Loopback20
ip address 129.0.0.2 255.255.0.0
!
interface GigabitEthernet0/0
bandwidth 100
ip vrf forwarding blue
ip address 192.168.1.12 255.255.255.0
ip ospf network point-to-point
duplex auto
speed auto
no mop enabled
!
interface GigabitEthernet0/1
description unused available port
ip vrf forwarding red
ip address 192.168.1.13 255.255.255.0
ip ospf network point-to-point
duplex auto
speed auto
no mop enabled
!
interface ATM0/0/0
no ip address
shutdown
no atm ilmi-keepalive
!
interface Serial0/1/0
no ip address
shutdown
clock rate 2000000
!
router ospf 2 vrf blue
router-id 10.0.0.2
log-adjacency-changes
redistribute static subnets
network 192.168.1.0 0.0.0.255 area 0
!
router ospf 1 vrf red
router-id 10.0.0.1
log-adjacency-changes
redistribute static subnets
network 192.168.1.0 0.0.0.255 area 0
!
router rip
version 2
!
address-family ipv4 vrf red
network 10.0.0.0
no auto-summary
exit-address-family
!
address-family ipv4 vrf blue
network 10.0.0.0
no auto-summary
exit-address-family
!
router bgp 40000
bgp router-id 10.0.0.1
bgp log-neighbor-changes
neighbor 10.0.0.2 remote-as 45000
!
address-family ipv4
no synchronization
network 10.0.0.0
network 10.0.0.0 mask 255.255.255.255
network 192.168.1.0
neighbor 10.0.0.2 activate
no auto-summary
exit-address-family
!
address-family ipv4 vrf blue
no synchronization
redistribute connected
redistribute static
neighbor 10.0.0.1 remote-as 40000
neighbor 10.0.0.1 activate
exit-address-family
!
ip forward-protocol nd
!
no ip http server
no ip http secure-server
!
ip route vrf blue 10.2.0.0 255.255.255.0 Null0
!
!
!
snmp-server community public RO
!
control-plane
!
!
line con 0
exec-timeout 0 0
password xxx
line aux 0
password xxx
login
modem InOut
transport input all
speed 115200
flowcontrol hardware
line vty 0 4
password xxx
login
transport input all
line vty 5 15
password xxx
login
!
scheduler allocate 20000 1000
end

I was trying to test and learn as much as i can using this one router.
the two interfaces are directly connected with 4 pair RJ-45 Cable.
Both

RIP and BGP

doesn't even show up .
Any help will be much appreciated.

[MHM Cisco World · Accepted solution]

https://networkdirection.net/articles/routingandswitching/mp-bgp/leakingrouteswithmp-bgp/

this link for config

BGP route leaking

, 
must important part

route-target import/export

[Cisco Enthusiast]

"If we are using

MP-BGP

, this solution should work. However, if we are configuring regular

BGP

, there are some changes that need to be made, right?

I'm also having trouble understanding why

RIP

isn't functioning properly. Can anyone please provide more details or share any specific error messages they encountered? It would be helpful to diagnose the issue and provide a more accurate solution. Thank you!"

[Giuseppe Larosa]

Hello @Cisco Enthusiast ,

>> I'm also having trouble understanding why

RIP

isn't functioning properly.

You are attempting to build

RIP

neighborships on loopback interfaces, but this is not possibile . A loopback interface is a logical interface isolated from outside world if using an appropriate

debug

command you should see a loopback receiving back only its own

RIP

advertisements sourced by itself.

In order to make a

RIP

neighborship you should run

RIP

also on the LAN interfaces that are interconnected with a LAN cable

gi0/0 and gi0/1

by adding a

network

command for subnet 192.168.1.0 under the two address families in

 RIP router

process.

For

BGP

you are attempting to use

iBGP

within a vrf and also this is something that is uncommon, but you have a single router that cannot be in two different

BGP

ASes at the same time. There are some tricks like  neighbor ... local-as that could be used but I would suggest you to try to fix the

RIP

Also OSPF could be used to build the inter VRF communication.

Hope to help

Giuseppe

[Harold Ritter]

Hi @Cisco Enthusiast ,

A few things you need to change for the

BGP

session to come up.

1. Advertise the loopback addresses in ospf for

vrf 

red and blue.

router ospf 2 vrf blue

network 10.0.0.2 0.0.0.0

area 0!

router ospf 1 vrf red

network 10.0.0.1 0.0.0.0 area 0

2. The following section of the

BGP

configuration should be configured for

vrf red

, not for global, as the session is established between

vrf red

and

vrf blue

(10.0.0.1 to 10.0.0.2).

address-family ipv4
no synchronization
network 10.0.0.0
network 10.0.0.0 mask 255.255.255.255
network 192.168.1.0
neighbor 10.0.0.2 activate
no auto-summary
exit-address-family
!

it should be

address-family ipv4 vrf red
no synchronization
network 10.0.0.0
network 10.0.0.0 mask 255.255.255.255
network 192.168.1.0
neighbor 10.0.0.2 activate
no auto-summary
exit-address-family
!

3. Configure a different

BGP router id for vrf red and blue

. Otherwise the default will be used and the session will not come up, as the router id will be the same for both neighbors.

address-family ipv4

vrf red

bgp router-id 10.0.0.1

address-family ipv4

vrf blue

bgp router-id 10.0.0.2

Regards,