H3C Technologies H3C S7500E Series Switches - Manual (Page 270)

6-67
BGP Local router ID is 194.1.1.1
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 1.0.0.0 193.1.1.1 0 200 0 100i
* i 192.1.1.1 0 100 0 100i
You can find route 1.0.0.0/8 from Switch D to Switch C is the optimal.
Configuring BFD for BGP
Network requirements
As shown in Figure 6-27 ,
z Configure OSPF as the IGP in AS 200.
z Establish two iBGP connections between Switch A and Switch C. When both links are working,
Switch C adopts the link Switch A<—>Switch B<—>Switch C to exchange packets with network
1.1.1.0/24. Configure BFD over the link. Then if the link fails, BFD can quickly detect the failure
and notify it to BGP. Then the link Switch A<—>Switch D<—>Switch C takes effect immediately.
Figure 6-27 Network diagram for BFD for BGP configuration
Device Interface IP address Device Interface IP address
Switch A Vlan-int100 3.0.1.1/24 Switch C Vlan-int101 3.0.2.2/24
Vlan-int200 2.0.1.1/24 Vlan-int201 2.0.2.2/24
Switch B Vlan-int100 3.0.1.2/24 Switch D Vlan-int200 2.0.1.2/24
Vlan-int101 3.0.2.1/24 Vlan-int201 2.0.2.1/24
Configuration procedure
Configure IP addresses for interfaces (omitted).
Configure OSPF (omitted) to ensure that Switch A and Switch C are reachable to each other.
Configure BGP on Switch A.
# Establish two iBGP connections between Switch A and Switch C.