3com S7906E Manuel De Montage

 

1-56 

 Paths:   1 available, 1 best 

 

 BGP routing table entry information of 9.1.1.0/24: 

 From            : 200.1.2.1 (1.1.1.1) 

 Original nexthop: 200.1.2.1 

 Community       : No-Export 

 AS-path         : 10 

 Origin          : igp 

 Attribute value : MED 0, pref-val 0, pre 255 

 State           : valid, external, best, 

 Not advertised to any peers yet 

 

The route 9.1.1.0/24 is not available in the routing table of Switch C. 

In the following figure, all switches run BGP.  

z 

Between Switch A and Switch B is an eBGP connection, between Switch C and Switch B, and 

between Switch C and Switch D are iBGP connections. 

z 

Switch C is a route reflector with clients Switch B and D. 

z 

Switch D can learn route 1.0.0.0/8 from Switch C. 

Figure 1-24 Network diagram for BGP route reflector configuration 

 

 

1)  Configure IP addresses for interfaces (omitted) 

2)  Configure BGP connections 

# Configure Switch A. 

<SwitchA> system-view 

[SwitchA] bgp 100 

[SwitchA-bgp] router-id 1.1.1.1 

[SwitchA-bgp] peer 192.1.1.2 as-number 200 

# Inject network 1.0.0.0/8 to the BGP routing table. 

[SwitchA-bgp] network 1.0.0.0 

[SwitchA-bgp] quit