iBGP over User-created VRFs Configuration Example

This section shows examples of configured internal Border Gateway Protocol (iBGP) IPv4 and IPv6 peers over user-created Virtual Routing and Forwarding (VRF) instances.

Note

The Autonomous System (AS) number configured on the global VRF is inherited by all user-created VRFs, however, you can override the AS number for a specific user-created VRF. For more information, see Configure an AS Number for a Non-default VRF.

IPv4 iBGP Peers Configuration

Configuration on switch 1:

#
# VRF CONFIGURATION
#
ip vrf vrf1 vrfid 1
router vrf vrf1
exit
ip vrf vrf2 vrfid 2
router vrf vrf2
exit
#
# PORT CONFIGURATION - PHASE I
#
interface GigabitEthernet 1/1
encapsulation dot1q
exit
#
# VLAN CONFIGURATION
#
vlan members remove 1 1/1,1/46
vlan create 100 type port-mstprstp 0
vlan members 100 1/1 portmember
interface Vlan 100
ip address 10.10.10.1 255.255.255.0 1
exit
vlan create 101 type port-mstprstp 0
vlan members 101 1/1 portmember
interface Vlan 101
vrf vrf1
ip address 11.10.10.1 255.255.255.0 2
exit
vlan create 102 type port-mstprstp 0
vlan members 102 1/1 portmember
interface Vlan 102
vrf vrf2
ip address 12.10.10.1 255.255.255.0 3
exit
#
# PORT CONFIGURATION - PHASE II
#
interface GigabitEthernet 1/1
default-vlan-id 100
no shutdown
exit
#
# CIRCUITLESS IP INTERFACE CONFIGURATION - GlobalRouter
#
interface loopback 1
ip address 10.1.1.10/32
exit
#
# CIRCUITLESS IP INTERFACE CONFIGURATION - VRF
#
interface loopback 2
ip address 11.1.1.11/32 vrf vrf1
exit
interface loopback 3
ip address 12.1.1.12/32 vrf vrf2
exit
#
# BGP CONFIGURATION - GlobalRouter
#
router bgp
no synchronization
exit
router bgp 1000 enable
router bgp
network 10.1.1.10/32 metric 100000
neighbor "10.10.10.2"
neighbor 10.10.10.2 remote-as 1000
neighbor 10.10.10.2 next-hop-self
neighbor 10.10.10.2 update-source 10.10.10.1
neighbor 10.10.10.2 enable
exit
#
# BGP CONFIGURATION - VRF
#
router vrf vrf1
ip bgp
no ip bgp synchronization
ip bgp enable
ip bgp network 11.1.1.11/32 metric 100000
ip bgp neighbor "11.10.10.2"
ip bgp neighbor 11.10.10.2 remote-as 1000
ip bgp neighbor 11.10.10.2 next-hop-self
ip bgp neighbor 11.10.10.2 update-source 11.10.10.1
ip bgp neighbor 11.10.10.2 enable
exit
router vrf vrf2
ip bgp
no ip bgp synchronization
ip bgp enable
ip bgp network 12.1.1.12/32 metric 100000
ip bgp neighbor "12.10.10.2"
ip bgp neighbor 12.10.10.2 remote-as 1000
ip bgp neighbor 12.10.10.2 next-hop-self
ip bgp neighbor 12.10.10.2 update-source 12.10.10.1
ip bgp neighbor 12.10.10.2 enable
exit

Configuration on switch 2:

#
# VRF CONFIGURATION
#
ip vrf vrf1 vrfid 1
router vrf vrf1
exit
ip vrf vrf2 vrfid 2
router vrf vrf2
exit
#
# PORT CONFIGURATION - PHASE I
#
interface GigabitEthernet 1/1
encapsulation dot1q
exit
#
# VLAN CONFIGURATION
#
vlan members remove 1 1/1,1/46
vlan create 100 type port-mstprstp 0
vlan members 100 1/1 portmember
interface Vlan 100
ip address 10.10.10.2 255.255.255.0 1
exit
vlan create 101 type port-mstprstp 0
vlan members 101 1/1 portmember
interface Vlan 101
vrf vrf1
ip address 11.10.10.2 255.255.255.0 2
exit
vlan create 102 type port-mstprstp 0
vlan members 102 1/1 portmember
interface Vlan 102
vrf vrf2
ip address 12.10.10.2 255.255.255.0 3
exit
#
# PORT CONFIGURATION - PHASE II
#
interface GigabitEthernet 1/1
default-vlan-id 100
no shutdown
exit
#
# BGP CONFIGURATION - GlobalRouter
#
router bgp
no synchronization
exit
router bgp 1000 enable
router bgp
neighbor "10.10.10.1"
neighbor 10.10.10.1 remote-as 1000
neighbor 10.10.10.1 next-hop-self
neighbor 10.10.10.1 update-source 10.10.10.2
neighbor 10.10.10.1 enable
exit
#
# BGP CONFIGURATION - VRF
#
router vrf vrf1
ip bgp
no ip bgp synchronization
ip bgp enable
ip bgp neighbor "11.10.10.1"
ip bgp neighbor 11.10.10.1 remote-as 1000
ip bgp neighbor 11.10.10.1 next-hop-self
ip bgp neighbor 11.10.10.1 update-source 11.10.10.2
ip bgp neighbor 11.10.10.1 enable
exit
router vrf vrf2
ip bgp
no ip bgp synchronization
ip bgp enable
ip bgp neighbor "12.10.10.1"
ip bgp neighbor 12.10.10.1 remote-as 1000
ip bgp neighbor 12.10.10.1 next-hop-self
ip bgp neighbor 12.10.10.1 update-source 12.10.10.2
ip bgp neighbor 12.10.10.1 enable
exit

IPv6 iBGP Peers Configuration

Configuration on switch 1:

#
# VRF CONFIGURATION
#
ip vrf vrf1 vrfid 1
router vrf vrf1
exit
ip vrf vrf2 vrfid 2
router vrf vrf2
exit
#
# PORT CONFIGURATION - PHASE I
#
interface GigabitEthernet 1/1
encapsulation dot1q
exit
#
# VLAN CONFIGURATION
#
vlan members remove 1 1/1,1/46
vlan create 100 type port-mstprstp 0
vlan members 100 1/1 portmember
interface Vlan 100
ipv6 interface mac-offset 1
ipv6 interface enable
ipv6 interface address 2001:DB8:0::1/64
exit
vlan create 101 type port-mstprstp 0
vlan members 101 1/1 portmember
interface Vlan 101
vrf vrf1
ipv6 interface mac-offset 2
ipv6 interface enable
ipv6 interface address 2001:DB8:1::1/64
exit
vlan create 102 type port-mstprstp 0
vlan members 102 1/1 portmember
interface Vlan 102
vrf vrf2
ipv6 interface mac-offset 3
ipv6 interface enable
ipv6 interface address 2001:DB8:2::1/64
exit
#
# PORT CONFIGURATION - PHASE II
#
interface GigabitEthernet 1/1
default-vlan-id 100
no shutdown
exit
#
# CIRCUITLESS IPV6 INTERFACE CONFIGURATION - GlobalRouter
#
interface loopback 1
ipv6 interface address 2001:DB8:2000::1/128
exit
#
# CIRCUITLESS IPV6 INTERFACE CONFIGURATION - VRF
#
interface loopback 2
ipv6 interface address 2001:DB8:2001::1/128 vrf vrf1
exit
interface loopback 3
ipv6 interface address 2001:DB8:2002::1/128 vrf vrf2
exit
#
# BGP CONFIGURATION - GlobalRouter
#
router bgp
no synchronization
exit
router bgp 1000 enable
router bgp
network 2001:DB8:2000::1/128 metric 100000
neighbor "2001:DB8:0::2"
neighbor 2001:DB8:0::2 remote-as 1000
neighbor 2001:DB8:0::2 next-hop-self
neighbor 2001:DB8:0::2 address-family ipv6
neighbor 2001:DB8:0::2 update-source 2001:DB8:0::1
neighbor 2001:DB8:0::2 enable
exit
#
# BGP CONFIGURATION - VRF
#
router vrf vrf1
ip bgp
no ip bgp synchronization
ip bgp enable
ip bgp network 2001:DB8:2001::1/128 metric 100000
ip bgp neighbor "2001:DB8:1::2"
ip bgp neighbor 2001:DB8:1::2 remote-as 1000
ip bgp neighbor 2001:DB8:1::2 next-hop-self
ip bgp neighbor 2001:DB8:1::2 update-source 2001:DB8:1::1
ip bgp neighbor 2001:DB8:1::2 address-family ipv6
ip bgp neighbor 2001:DB8:1::2 enable
exit
router vrf vrf2
ip bgp
no ip bgp synchronization
ip bgp enable
ip bgp network 2001:DB8:2002::1/128 metric 100000
ip bgp neighbor "2001:DB8:2::2"
ip bgp neighbor 2001:DB8:2::2 remote-as 1000
ip bgp neighbor 2001:DB8:2::2 next-hop-self
ip bgp neighbor 2001:DB8:2::2 update-source 2001:DB8:2::1
ip bgp neighbor 2001:DB8:2::2 address-family ipv6
ip bgp neighbor 2001:DB8:2::2 enable
exit

Configuration on switch 2:

#
# VRF CONFIGURATION
#
ip vrf vrf1 vrfid 1
router vrf vrf1
exit
ip vrf vrf2 vrfid 2
router vrf vrf2
exit
#
# PORT CONFIGURATION - PHASE I
#
interface GigabitEthernet 1/1
encapsulation dot1q
exit
#
# VLAN CONFIGURATION
#
vlan members remove 1 1/1,1/46
vlan create 100 type port-mstprstp 0
vlan members 100 1/1 portmember
interface Vlan 100
ipv6 interface mac-offset 1
ipv6 interface enable
ipv6 interface address 2001:DB8:0::2/64
exit
vlan create 101 type port-mstprstp 0
vlan members 101 1/1 portmember
interface Vlan 101
vrf vrf1
ipv6 interface mac-offset 2
ipv6 interface enable
ipv6 interface address 2001:DB8:1::2/64
exit
vlan create 102 type port-mstprstp 0
vlan members 102 1/1 portmember
interface Vlan 102
vrf vrf2
ipv6 interface mac-offset 3
ipv6 interface enable
ipv6 interface address 2001:DB8:2::2/64
exit
#
# PORT CONFIGURATION - PHASE II
#
interface GigabitEthernet 1/1
default-vlan-id 100
no shutdown
exit
#
# BGP CONFIGURATION - GlobalRouter
#
router bgp
no synchronization
exit
router bgp 1000 enable
router bgp
neighbor "2001:DB8:0::1"
neighbor 2001:DB8:0::1 remote-as 1000
neighbor 2001:DB8:0::1 next-hop-self
neighbor 2001:DB8:0::1 address-family ipv6
neighbor 2001:DB8:0::1 update-source 2001:DB8:0::2
neighbor 2001:DB8:0::1 enable
exit
#
# BGP CONFIGURATION - VRF
#
router vrf vrf1
ip bgp
no ip bgp synchronization
ip bgp enable
ip bgp neighbor "2001:DB8:1::1"
ip bgp neighbor 2001:DB8:1::1 remote-as 1000
ip bgp neighbor 2001:DB8:1::1 next-hop-self
ip bgp neighbor 2001:DB8:1::1 update-source 2001:DB8:1::2
ip bgp neighbor 2001:DB8:1::1 address-family ipv6
ip bgp neighbor 2001:DB8:1::1 enable
exit
router vrf vrf2
ip bgp
no ip bgp synchronization
ip bgp enable
ip bgp neighbor "2001:DB8:2::1"
ip bgp neighbor 2001:DB8:2::1 remote-as 1000
ip bgp neighbor 2001:DB8:2::1 next-hop-self
ip bgp neighbor 2001:DB8:2::1 update-source 2001:DB8:2::2
ip bgp neighbor 2001:DB8:2::1 address-family ipv6
ip bgp neighbor 2001:DB8:2::1 enable
exit