R21xx-HP FlexFabric 11900 High Availability Configuration Guide

Static routing-Track-BFD collaboration configuration example

Network requirements

As shown in Figure 25, Switch A, Switch B, and Switch C are connected to two segments 20.1.1.0/24

and 30.1.1.0/24. Configure static routes on these routers so that the two segments can communicate with

each other. Configure route backup to improve network reliability.

Switch A is the default gateway of the hosts in segment 20.1.1.0/24. Two static routes to 30.1.1.0/24 exist

on Switch A, with the next hop being Switch B and Switch C, respectively. These two static routes back

up each other as follows:

• The static route with Switch B as the next hop has a higher priority and is the master route. If this

route is available, Switch A forwards packets to 30.1.1.0/24 through Switch B.

• The static route with Switch C as the next hop acts as the backup route.

• Configure static routing-Track-BFD collaboration to determine whether the master route is available

in real time. If the master route is unavailable, BFD can quickly detect the route failure to make the

backup route take effect, and Switch A forwards packets to 30.1.1.0/24 through Switch C and

Switch B.

Similarly, Switch B is the default gateway of the hosts in segment 30.1.1.0/24. Two static routes to

20.1.1.0/24 exist on Switch B, with the next hop being Switch A and Switch C, respectively. These two

static routes back up each other as follows:

• The static route with Switch A as the next hop has a higher priority and is the master route. If this

route is available, Switch B forwards packets to 20.1.1.0/24 through Switch A.

• The static route with Switch C as the next hop acts as the backup route.

• Configure static routing-Track-BFD collaboration to determine whether the master route is available

in real time. If the master route is unavailable, BFD can quickly detect the route failure to make the

backup route take effect, and Switch B forwards packets to 20.1.1.0/24 through Switch C and

Switch A.

Figure 25 Network diagram

Configuration procedure

1. Create VLANs and assign corresponding ports to them. Configure the IP address of each VLAN

interface as shown in Figure 25. (Details not shown.)

2. Configure Switch A:

# Configure a static route to 30.1.1.0/24, with the address of the next hop as 10.2.1.2 and the

default priority 60. This static route is associated with track entry 1.

<SwitchA> system-view