H3C Technologies H3C SecPath F1000-E - Manual (Page 309)

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PING 20.1.1.1: 56 data bytes, press CTRL_C to break
Reply from 20.1.1.1: bytes=56 Sequence=1 ttl=254 time=2 ms
Reply from 20.1.1.1: bytes=56 Sequence=2 ttl=254 time=1 ms
Reply from 20.1.1.1: bytes=56 Sequence=3 ttl=254 time=1 ms
Reply from 20.1.1.1: bytes=56 Sequence=4 ttl=254 time=1 ms
Reply from 20.1.1.1: bytes=56 Sequence=5 ttl=254 time=1 ms
--- 20.1.1.1 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 1/1/2 ms
Static Routing-Track-BFD Collaboration Configuration Example
Network requirements
As shown in Figure 6 , Device A, Device B, and Device C are connected to two segments 20.1.1.0/24
and 30.1.1.0/24. Configure static routes on these devices so that the two segments can communicate
with each other, and configure route backup to improve reliability of the network.
Device 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 Device A, with the next hop being Device B and Device C respectively. These two static routes
back up each other, where:
• The static route with Device B as the next hop has a higher priority, and is the master route. If this
route is available, Device A forwards packets to 30.1.1.0/24 through Device B.
• The static route with Device 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 Device A forwards packets to 30.1.1.0/24 through Device C and
Device B.
Similarly, Device 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 Device B, with the next hop being Device A and Device C respectively. These two
static routes back up each other, where:
• The static route with Device A as the next hop has a higher priority, and is the master route. If this
route is available, Device B forwards packets to 20.1.1.0/24 through Device A.
• The static route with Device 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 Device B forwards packets to 20.1.1.0/24 through Device C and
Device A.