3Com Switch 8800 Advanced Software V5 Configuration Guide

BGP Configuration Examples 461
# Display the routing table of SwitchB.
[SwitchB] display bgp routing-table
Total Number of Routes: 1
BGP Local router ID is 2.2.2.2
Status codes: * - valid, > - best, d - damped,
h - history, i - internal, s - suppressed, S - Stale
Origin : i - IGP, e - EGP, ? - incomplete
Network NextHop MED LocPrf PrefVal Path/Ogn
*>i 9.1.1.0/24 10.1.1.1 0 100 0 (65001) 100i
[SwitchB] display bgp routing-table 9.1.1.0
BGP local router ID : 2.2.2.2
Local AS number : 65002
Paths: 1 available, 1 best
BGP routing table entry information of 9.1.1.0/24:
From : 10.1.1.1 (1.1.1.1)
Relay Nexthop : 0.0.0.0
Original nexthop: 10.1.1.1
AS-path : (65001) 100
Origin : igp
Attribute value : MED 0, localpref 100, pref-val 0, pre 255
State : valid, external-confed, best,
Not advertised to any peers yet
# Display the BGP routing table on SwitchD.
[SwitchD] display bgp routing-table
Total Number of Routes: 1
BGP Local router ID is 4.4.4.4
Status codes: * - valid, > - best, d - damped,
h - history, i - internal, s - suppressed, S - Stale
Origin : i - IGP, e - EGP, ? - incomplete
Network NextHop MED LocPrf PrefVal Path/Ogn
*>i 9.1.1.0/24 10.1.3.1 0 100 0 100i
[SwitchD] display bgp routing-table 9.1.1.0
BGP local router ID : 4.4.4.4
Local AS number : 65001
Paths: 1 available, 1 best
BGP routing table entry information of 9.1.1.0/24:
From : 10.1.3.1 (1.1.1.1)
Relay Nexthop : 0.0.0.0
Original nexthop: 10.1.3.1
AS-path : 100
Origin : igp
Attribute value : MED 0, localpref 100, pref-val 0, pre 255
State : valid, internal, best,
Not advertised to any peers yet
BGP Route Reflector
Configuration
Network requirements
In the following figure, all switches run BGP.
■ Between SwitchA and SwitchB is an EBGP connection, between SwitchC and
SwitchB, SwitchC and SwitchD are IBGP connections.
■ SwitchC is a route reflector with clients SwitchB and D.
■ SwitchD can learn route 1.0.0.0/8 from SwitchC.