Dell Configuration Guide for the S4048–ON System 9.14.2.6

Example-Configuring BGP peer groups

The following example configurations show how to enable BGP and set up some peer groups. These examples are not comprehensive directions. They are intended to give you some guidance with typical configurations.

To support your own IP addresses, interfaces, names, and so on, you can copy and paste from these examples to your CLI. Be sure that you make the necessary changes.

The following illustration shows the configurations described on the following examples. These configurations show how to create BGP areas using physical and virtual links. They include setting up the interfaces and peers groups with each other.

R1# conf
R1(conf)#int loop 0
R1(conf-if-lo-0)#ip address 192.168.128.1/32
R1(conf-if-lo-0)#no shutdown
R1(conf-if-lo-0)#show config
!
interface Loopback 0
ip address 192.168.128.1/24
no shutdown
R1(conf-if-lo-0)#int gi 1/21
R1(conf-if-gi-1/21)#ip address 10.0.1.21/24
R1(conf-if-gi-1/21)#no shutdown
R1(conf-if-gi-1/21)#show config
!
interface GigabitEthernet 1/21
ip address 10.0.1.21/24
no shutdown
R1(conf-if-gi-1/21)#int gi 1/31
R1(conf-if-gi-1/31)#ip address 10.0.3.31/24
R1(conf-if-gi-1/31)#no shutdown
R1(conf-if-gi-1/31)#show config
!
interface GigabitEthernet 1/31
ip address 10.0.3.31/24
no shutdown
R1(conf-if-gi-1/31)#exit
R1(conf)#ip route 192.168.128.2/32 10.0.1.22
R1(conf)#router bgp 99
R1(conf-router_bgp)#neighbor 192.168.128.2 remote 99
R1(conf-router_bgp)#neighbor 192.168.128.2 no shut
R1(conf-router_bgp)#neighbor 192.168.128.2 update-source loop 0
R1(conf-router_bgp)#neighbor 10.0.3.33 remote 100
R1(conf-router_bgp)#neighbor 10.0.3.33 no shut
R1(conf-router_bgp)#show config
!
router bgp 99
network 192.168.128.0/24
neighbor 192.168.128.2 remote-as 99
neighbor 192.168.128.2 update-source Loopback 0
neighbor 10.0.3.33 no shutdown
neighbor 10.0.3.33 remote-as 100

R2# conf
R2(conf)#int loop 0
R2(conf-if-lo-0)#ip address 192.168.128.2/32
R2(conf-if-lo-0)#no shutdown
R2(conf-if-lo-0)#show config
!
interface Loopback 0
ip address 192.168.128.2/24
no shutdown
R2(conf-if-lo-0)#int te 2/11
R2(conf-if-te-2/11)#ip address 10.0.1.22/24
R2(conf-if-te-2/11)#no shutdown
R2(conf-if-te-2/11)#show config
!
interface TengigabitEthernet 2/11
ip address 10.0.1.22/24
no shutdown
R2(conf-if-te-2/11)#int te 2/31
R2(conf-if-te-2/31)#ip address 10.0.2.2/24
R2(conf-if-te-2/31)#no shutdown
R2(conf-if-te-2/31)#show config
!
interface TengigabitEthernet 2/31
ip address 10.0.2.2/24
no shutdown
R2(conf-if-te-2/31)#exit
R2(conf)#ip route 192.168.1.1/32 10.0.1.21
R2(conf)#
R2(conf-if-te-2/31)#router bgp 99
R2(conf-router_bgp)#neighbor 192.168.128.1 remote 99
R2(conf-router_bgp)#neighbor 192.168.128.1 no shut
R2(conf-router_bgp)#neighbor 192.168.128.1 update-source loop 0
R2(conf-router_bgp)#neighbor 10.0.2.3 remote 100
R2(conf-router_bgp)#neighbor 10.0.2.3 no shut
R2(conf-router_bgp)#show config
!
router bgp 99
neighbor 192.168.128.1 remote 99
neighbor 192.168.128.1 no shut
neighbor 192.168.128.1 update-source loop 0
neighbor 10.0.2.3 remote 100
neighbor 10.0.2.3 no shut

R3#conf
R3(conf)#int te 3/11
R3(conf-if-te-3/11)#ip address 10.0.3.33/24
R3(conf-if-te-3/11)#no shutdown
R3(conf-if-te-3/11)#show config
!
interface TengigabitEthernet 3/11
ip address 10.0.3.33/24
no shutdown
R3(conf-if-te-3/11)#int te 3/21
R3(conf-if-te-3/21)#ip address 10.0.2.3/24
R3(conf-if-te-3/21)#no shutdown
R3(conf-if-te-3/21)#show config
!
interface TengigabitEthernet 3/21
ip address 10.0.2.3/24
no shutdown
R3(conf-if-te-3/21)#
R3(conf-if-te-3/21)#router bgp 100
R3(conf-router_bgp)#show config
!
router bgp 100
R3(conf-router_bgp)#neighbor 10.0.3.31 remote 99
R3(conf-router_bgp)#neighbor 10.0.3.31 no shut
R3(conf-router_bgp)#neighbor 10.0.2.2 remote 99
R3(conf-router_bgp)#neighbor 10.0.2.2 no shut
R3(conf-router_bgp)#show config
!
router bgp 100
neighbor 10.0.3.31 remote 99
neighbor 10.0.3.31 no shut
neighbor 10.0.2.2 remote 99
neighbor 10.0.2.2 no shut

conf
R1(conf)#router bgp 99
R1(conf-router_bgp)# network 192.168.128.0/24
R1(conf-router_bgp)# neighbor AAA peer-group
R1(conf-router_bgp)# neighbor AAA no shutdown
R1(conf-router_bgp)# neighbor BBB peer-group
R1(conf-router_bgp)# neighbor BBB no shutdown
R1(conf-router_bgp)# neighbor 192.168.128.2 peer-group AAA
R1(conf-router_bgp)# neighbor 192.168.128.3 peer-group BBB
R1(conf-router_bgp)#
R1(conf-router_bgp)#show config
!
router bgp 99
network 192.168.128.0/24
neighbor AAA peer-group
neighbor AAA no shutdown
neighbor BBB peer-group
neighbor BBB no shutdown
neighbor 192.168.128.2 remote-as 99
neighbor 192.168.128.2 peer-group AAA
neighbor 192.168.128.2 update-source Loopback 0
neighbor 192.168.128.2 no shutdown
neighbor 192.168.128.3 remote-as 100
neighbor 192.168.128.3 peer-group BBB
neighbor 192.168.128.3 update-source Loopback 0
neighbor 192.168.128.3 no shutdown
R1#
R1#show ip bgp summary
BGP router identifier 192.168.128.1, local AS number 99
BGP table version is 1, main routing table version 1
1 network entrie(s) using 132 bytes of memory
3 paths using 204 bytes of memory
BGP-RIB over all using 207 bytes of memory
2 BGP path attribute entrie(s) using 96 bytes of memory
2 BGP AS-PATH entrie(s) using 74 bytes of memory
2 neighbor(s) using 8672 bytes of memory
Neighbor        AS    MsgRcvd  MsgSent     TblVer  InQ  OutQ Up/Down  State/Pfx
192.168.128.2   99    23       24          0      0     0  00:06:11 0

R2#conf
R2(conf)#router bgp 99
R2(conf-router_bgp)# neighbor CCC peer-group
R2(conf-router_bgp)# neighbor CC no shutdown
R2(conf-router_bgp)# neighbor BBB peer-group
R2(conf-router_bgp)# neighbor BBB no shutdown
R2(conf-router_bgp)# neighbor 192.168.128.1 peer AAA
R2(conf-router_bgp)# neighbor 192.168.128.1 no shut
R2(conf-router_bgp)# neighbor 192.168.128.3 peer BBB
R2(conf-router_bgp)# neighbor 192.168.128.3 no shut
R2(conf-router_bgp)#show conf
!
router bgp 99
network 192.168.128.0/24
neighbor AAA peer-group
neighbor AAA no shutdown
neighbor BBB peer-group
neighbor BBB no shutdown
neighbor 192.168.128.1 remote-as 99
neighbor 192.168.128.1 peer-group CCC
neighbor 192.168.128.1 update-source Loopback 0
neighbor 192.168.128.1 no shutdown
neighbor 192.168.128.3 remote-as 100
neighbor 192.168.128.3 peer-group BBB
neighbor 192.168.128.3 update-source Loopback 0
neighbor 192.168.128.3 no shutdown
R2(conf-router_bgp)#end
R2#
R2#show ip bgp summary
BGP router identifier 192.168.128.2, local AS number 99
BGP table version is 2, main routing table version 2
1 network entrie(s) using 132 bytes of memory
3 paths using 204 bytes of memory
BGP-RIB over all using 207 bytes of memory
2 BGP path attribute entrie(s) using 128 bytes of memory
2 BGP AS-PATH entrie(s) using 90 bytes of memory
2 neighbor(s) using 9216 bytes of memory
Neighbor        AS    MsgRcvd  MsgSent  TblVer  InQ  OutQ Up/Down  State/Pfx
192.168.128.1   99    140      136      2       0    (0)  00:11:24 1
192.168.128.3  100    138      140      2       0    (0)  00:18:31 1

R3#conf
R3(conf)#router bgp 100
R3(conf-router_bgp)# neighbor AAA peer-group
R3(conf-router_bgp)# neighbor AAA no shutdown
R3(conf-router_bgp)# neighbor CCC peer-group
R3(conf-router_bgp)# neighbor CCC no shutdown
R3(conf-router_bgp)# neighbor 192.168.128.2 peer-group BBB
R3(conf-router_bgp)# neighbor 192.168.128.2 no shutdown
R3(conf-router_bgp)# neighbor 192.168.128.1 peer-group BBB
R3(conf-router_bgp)# neighbor 192.168.128.1 no shutdown
R3(conf-router_bgp)#
R3(conf-router_bgp)#end
R3#show ip bgp summary
BGP router identifier 192.168.128.3, local AS number 100
BGP table version is 1, main routing table version 1
1 network entrie(s) using 132 bytes of memory
3 paths using 204 bytes of memory
BGP-RIB over all using 207 bytes of memory
2 BGP path attribute entrie(s) using 128 bytes of memory
2 BGP AS-PATH entrie(s) using 90 bytes of memory
2 neighbor(s) using 9216 bytes of memory
Neighbor        AS    MsgRcvd  MsgSent  TblVer  InQ  OutQ Up/Down  State/Pfx
192.168.128.1   99    93       99       1       0    (0)  00:00:15 1
192.168.128.2   99    122      120      1       0    (0)  00:00:11 1