R21xx-HP FlexFabric 11900 Layer 3 IP Routing Configuration Guide

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# Display the BGP routing table on Switch D.
[SwitchD] display bgp routing-table ipv4
Total number of routes: 1
BGP local router ID is 4.4.4.4
Status codes: * - valid, > - best, d - damped, h - history,
s - suppressed, S - Stale, i - internal, e - external
Origin: i - IGP, e - EGP, ? - incomplete
Network NextHop MED LocPrf PrefVal Path/Ogn
i 20.0.0.0 193.1.1.2 0 100 0 100i
Switch D has learned route 20.0.0.0/8 from Switch C.
BGP confederation configuration example
Network requirements
As shown in Figure 63, to reduce IBGP connections, AS 200 is split into three sub-ASs: AS 65001, AS
65002, and AS 65003. Switches in AS 65001 are fully meshed.
Figure 63 Network diagram
Device Interface IP address Device Interface IP address
Switch A Vlan-int100 200.1.1.1/24 Switch D Vlan-int200 10.1.5.1/24
Vlan-int200 10.1.1.1/24 Vlan-int400 10.1.3.2/24
Vlan-int300 10.1.2.1/24 Switch E Vlan-int200 10.1.5.2/24
Vlan-int400 10.1.3.1/24 Vlan-int500 10.1.4.2/24
Vlan-int500 10.1.4.1/24 Switch F Vlan-int100 200.1.1.2/24
Switch B Vlan-int200 10.1.1.2/24 Vlan-int600 9.1.1.1/24
Switch C Vlan-int300 10.1.2.2/24
Switch F
Switch A
Switch D
Switch E
AS 200
AS 100
Vlan-int600
Switch B
Switch C
AS 65002
AS 65003
Vlan-int100
Vlan-int100
AS 65001
Vl
an
-int300
Vlan-int400
Vlan-int500
Vlan-int400
Vlan-int500
Vlan-int200
Vlan-int200
Vlan-int300
Vlan-int200