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H3C Technologies H3C MSR 5600 User Manual

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10.2.1.0/24 Direct 0 0 10.2.1.1 Eth1/1

10.2.1.1/32 Direct 0 0 127.0.0.1 InLoop0

10.3.1.0/24 Direct 0 0 10.3.1.1 Eth1/2

10.3.1.1/32 Direct 0 0 127.0.0.1 InLoop0

20.1.1.0/24 Direct 0 0 20.1.1.1 Eth1/3

20.1.1.1/32 Direct 0 0 127.0.0.1 InLoop0

30.1.1.0/24 Static 60 0 10.2.1.2 Eth1/1

127.0.0.0/8 Direct 0 0 127.0.0.1 InLoop0

127.0.0.1/32 Direct 0 0 127.0.0.1 InLoop0

The output shows the BFD detection result: the next hop 10.2.1.2 is reachable (the status of the track entry
is Positive), and the master static route takes effect. Router A forwards packets to 30.1.1.0/24 through

Router B.
# Remove the IP address of interface Ethernet 1/1 on Router B.

system-view

[RouterB] interface ethernet 1/1

[RouterB-Ethernet1/1] undo ip address

# Display information about the track entry on Router A.

[RouterA] display track all

Track ID: 1

State: Negative

Duration: 0 days 0 hours 0 minutes 32 seconds

Notification delay: Positive 0, Negative 0 (in seconds)

Tracked object:

BFD session mode: Echo

Outgoing interface: Ethernet1/1

VPN instance name: -

Remote IP: 10.2.1.2

Local IP: 10.2.1.1

# Display the routing table of Router A.

[RouterA] display ip routing-table

Routing Tables: Public

Destinations : 9 Routes : 9

Destination/Mask Proto Pre Cost NextHop Interface

10.2.1.0/24 Direct 0 0 10.2.1.1 Eth1/1

10.2.1.1/32 Direct 0 0 127.0.0.1 InLoop0

10.3.1.0/24 Direct 0 0 10.3.1.1 Eth1/2

10.3.1.1/32 Direct 0 0 127.0.0.1 InLoop0

20.1.1.0/24 Direct 0 0 20.1.1.1 Eth1/3

20.1.1.1/32 Direct 0 0 127.0.0.1 InLoop0

30.1.1.0/24 Static 80 0 10.3.1.3 Eth1/2

127.0.0.0/8 Direct 0 0 127.0.0.1 InLoop0

127.0.0.1/32 Direct 0 0 127.0.0.1 InLoop0

The output shows the BFD detection result: if the next hop 10.2.1.2 is unreachable (the status of the track
entry is Negative), the backup static route takes effect, and Router A forwards packets to 30.1.1.0/24

through Router C and Router B.

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