Configuration procedure

Procedure
  1. Configure IP addresses for interfaces (omitted.)
  2. Configure BGP connections.
  3. # Configure Switch A. 
    switch(config)# router bgp 100
switch(bgp)# bgp router-id 1.1.1.1
switch(bgp)# neighbor 192.1.1.2 remote-as 200
  4. # Add network 1.0.0.0/8 to the BGP routing table. 
    switch(bgp)# network 1.0.0.0
switch(bgp)# exit
  5. # Configure Switch B. 
    switch(config)# router bgp 200
switch(bgp)# bgp router-id 2.2.2.2
switch(bgp)# neighbor 192.1.1.1 remote-as 100
switch(bgp)# neighbor 193.1.1.1 remote-as 200
switch(bgp)# neighbor 193.1.1.1 next-hop-self
switch(bgp)# exit
  6. # Configure Switch C. 
    switch(config)# router bgp 200
switch(bgp)# bgp router-id 3.3.3.3
switch(bgp)# neighbor 193.1.1.2 remote-as 200
switch(bgp)# neighbor 194.1.1.2 remote-as 200
switch(bgp)# exit
  7. # Configure Switch D. 
    switch(config)# router bgp 200
switch(bgp)# bgp router-id 4.4.4.4
switch(bgp)# neighbor 194.1.1.1 remote-as 200
switch(bgp)# exit
  8. Configure the route reflector.
  9. # Configure Switch C. 
    switch(config)# router bgp 200
switch(bgp)# neighbor 193.1.1.2 route-reflector-client
switch(bgp)# neighbor 194.1.1.2 route-reflector-client
switch(bgp)# exit
  10. Verify the above configuration.
  11. # Display the BGP routing table on Switch B. 
    switch(config)# show ip bgp

Local AS : 200
Local Router-id : 200.1.2.2

BGP Table Version  : 1
Status codes: * - valid, > - best, i - internal, e - external, s - stale
Origin codes: i - IGP, e - EGP, ? - incomplete

Network          Nexthop     Metric LocalPref Weight  AsPath
------------------------------------------------------------
*>i 1.0.0.0/24   200.1.3.1       0              0     100i
  12. # Display the BGP routing table on Switch D. 
    switch(config)# show ip bgp

Local AS : 200
Local Router-id : 200.1.2.2

BGP Table Version  : 1
Status codes: * - valid, > - best, i - internal, e - external, s - stale
Origin codes: i - IGP, e - EGP, ? - incomplete

Network        Nexthop     Metric LocalPref Weight AsPath
-------------------------------------------------------
*>e 1.0.0.0/24 200.1.3.1        0           100    100i
  13. Switch D learned route 1.0.0.0/8 from Switch C.