24-9
2) Display data forwarding paths when the main link of the OA server between Switch A and Switch C
is down.
<SwitchC> display ip routing-table
Routing Table: public net
Destination/Mask Protocol Pre Cost Nexthop Interface
1.0.0.0/8 RIP 100 6 6.6.6.5 Vlan-interface2
3.0.0.0/8
RIP 100 5 6.6.6.5 Vlan-interface6
6.0.0.0/8 DIRECT 0 0 6.6.6.6 Vlan-interface6
6.6.6.6/32
DIRECT 0 0 127.0.0.1 InLoopBack0
127.0.0.0/8
DIRECT 0 0 127.0.0.1 InLoopBack0
127.0.0.1/32 DIRECT 0 0 127.0.0.1 InLoopBack0
192.168.0.0/24
DIRECT 0 0 192.168.0.39 Vlan-interface1
192.168.0.39/32 DIRECT 0 0 127.0.0.1 InLoopBack0
Precautions
1) When you configure the
apply cost
command in a route policy:
z
The new cost should be greater than the original one to prevent RIP from generating routing loop in
the case that a loop exists in the topology.
z
The cost will become 16 if you try to set it to a value greater than 16.
z
The cost will become the original one if you try to set it to 0.
z
The cost will still be 16 if you try to set it to 16.
2) Using
the
if-match interface
command will match the routes whose outgoing interface to the next
hop is the specified interface.
3) You are recommended to configure a node to match all routes not passing the preceding nodes in
a route policy.
4) If the cost of a received RIP route is equal to 16, the cost specified by the
apply cost
command in
a route policy will not be applied to the route, that is, the cost of the route is equal to 16.
5) Using
the
filter-policy
command does not filter redistributed routes.
Troubleshooting IP Route Policy
Symptom
The route policy cannot filter routing information correctly when the routing protocol runs normally.
Analysis
The route policy cannot filter routing information correctly in the following two cases:
z
All nodes in the route policy are in the
deny
mode.
z
All entries in the IP-prefix list are in the
deny
mode.
Solution
1) Use
the
display ip ip-prefix
command to display the configuration of the IP-prefix list.
2) Use
the
display route-policy
command to display the configuration of the route policy.
