Example For Configuring Dynamic Bfd For Is-Is - Huawei S6700 Series Configuration Manual

S6700 Series Ethernet Switches
Configuration Guide - IP Routing

6.18.7 Example for Configuring Dynamic BFD for IS-IS

Networking Requirements
As shown in
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Figure 6-9 Networking diagram for configuring the dynamic BFD
XGE0/0/1
1.1.1.1/24
Switch
Switch A
Switch A
Switch B
Switch B
Switch B
Issue 01 (2012-03-15)
#
isis 1
is-level level-2
network-entity aa.3333.3333.3333.00
#
interface Vlanif30
ip address 100.2.1.2 255.255.255.0
isis enable 1
#
interface XGigabitEthernet0/0/1
port hybrid pvid vlan 30
port hybrid untagged vlan 30
#
return
Figure 6-9, it is required as follows:
Run IS-IS on Switch A, Switch B, and Switch C.
Enable BFD of the IS-IS process on Switch A, Switch B, and Switch C.
Traffic is transmitted on the active link Switch A → Switch B. The link Switch A → Switch
B → Switch C acts as the standby link.
Enable BFD of the interface on the link between Switch A and Switch B. When the link
between Switch A and Switch B fails, BFD can quickly detect the fault and notify IS-IS of
the fault; therefore, the traffic is transmitted on the standby link.
Switch A
XGE0/0/2
3.3.3.1/24
XGE0/0/1
1.1.1.2/24
Interface
XGE0/0/1
XGE0/0/2
XGE0/0/1
XGE0/0/2
XGE0/0/3
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XGE0/0/2
3.3.3.2/24
XGE0/0/2
2.2.2.1/24
SwitchC
6 IS-IS Configuration
SwitchB XGE0/0/3
172.16.1.1/24
XGE0/0/1
2.2.2.2/24
VLANIF interface
VLANIF 10
VLANIF 20
VLANIF 50
VLANIF 20
VLANIF 40
IP address
1.1.1.1/24
3.3.3.1/24
2.2.2.2/24
3.3.3.2/24
172.16.1.1/24
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