Bgp Gr Configuration Example - HP FlexFabric 12900E Series Configuration Manual

[SwitchD] display bgp routing-table ipv4
Total number of routes: 2
BGP local router ID is 195.1.1.1
Status codes: * - valid, > - best, d - dampened, h - history,
Network
* >i 1.0.0.0
* i
Route 1.0.0.0/8 learned from Switch C is the optimal.

BGP GR configuration example

Network requirements
As shown in
between Switch B and Switch C.
Enable GR capability for BGP so that the communication between Switch A and Switch C is not
affected when an active/standby switchover occurs on Switch B.
Figure 73 Network diagram
Vlan-int100
8.1.1.1/8
Switch A
(GR helper)
Configuration procedure
1. Configure Switch A:
# Configure IP addresses for interfaces. (Details not shown.)
# Configure the EBGP connection.
<SwitchA> system-view
[SwitchA] bgp 65008
[SwitchA-bgp-default] router-id 1.1.1.1
[SwitchA-bgp-default] peer 200.1.1.1 as-number 65009
# Enable GR capability for BGP.
[SwitchA-bgp-default] graceful-restart
# Inject network 8.0.0.0/8 to the BGP routing table.
[SwitchA-bgp-default] address-family ipv4
[SwitchA-bgp-default-ipv4] network 8.0.0.0
# Enable Switch A to exchange IPv4 unicast routing information with Switch B.
[SwitchA-bgp-default-ipv4] peer 200.1.1.1 enable
2. Configure Switch B:
s - suppressed, S - stale, i - internal, e - external
Origin: i - IGP, e - EGP, ? - incomplete
NextHop
193.1.1.1
192.1.1.1
Figure 73, all switches run BGP. EBGP runs between Switch A and Switch B. IBGP runs
AS 65008
AS 65009
Vlan-int200 Vlan-int200
200.1.1.2/24 200.1.1.1/24
MED
Vlan-int400
9.1.1.1/24
Switch B
(GR restarter)
325
LocPrf PrefVal Path/Ogn
200 0
100 0
Vlan-int400
9.1.1.2/24
Switch C
(GR helper)
100i
100i