HP 6125XLG - BGP FRR Configuration Example

288
Protocol: BGP Process ID: 0
SubProtID: 0x1 Age: 00h00m09s
Cost: 50 Preference: 255
Tag: 0 State: Active Adv
OrigTblID: 0x1 OrigVrf: default-vrf
TableID: 0x2 OrigAs: 0
NBRID: 0x15000001 LastAs: 0
AttrID: 0x1 Neighbor: 3.0.1.1
Flags: 0x10060 OrigNextHop: 3.0.1.1
Label: NULL RealNextHop: 3.0.2.1
BkLabel: NULL BkNextHop: N/A
Tunnel ID: Invalid Interface: Vlan-interface101
BkTunnel ID: Invalid BkInterface: N/A
The output shows that Switch C communicates with network 1.1.1.0/24 through the path Switch
C<—>Switch B<—>Switch A.
# Break down the path Switch C<—>Switch B<—>Switch A and then display route 1.1.1.0/24
on Switch C.
<SwitchC> display ip routing-table 1.1.1.0 24 verbose
Summary Count : 1
Destination: 1.1.1.0/24
Protocol: BGP Process ID: 0
SubProtID: 0x1 Age: 00h03m08s
Cost: 100 Preference: 255
Tag: 0 State: Active Adv
OrigTblID: 0x1 OrigVrf: default-vrf
TableID: 0x2 OrigAs: 0
NBRID: 0x15000000 LastAs: 0
AttrID: 0x0 Neighbor: 2.0.1.1
Flags: 0x10060 OrigNextHop: 2.0.1.1
Label: NULL RealNextHop: 2.0.2.1
BkLabel: NULL BkNextHop: N/A
Tunnel ID: Invalid Interface: Vlan-interface201
BkTunnel ID: Invalid BkInterface: N/A
The output shows that Switch C communicates with network 1.1.1.0/24 through the path Switch
C<—>Switch D<—>Switch A.
BGP FRR configuration example
Network requirements
As shown in Figure 73, configuring BGP FRR so that when Link B fails, BGP uses Link A to forward traffic.