Hitachi GR2000 Series - Manual (Page 118)

Hitachi Gigabit Router GR2000 Series Enhanced Version Operations - Device Management Overview
5-18 GR2K-GA-0015
Ver. 07-02
5.3 Confirmation of IPv4 Unicast Routing Information
5.3.1 Confirming the route to destination address
Confirm using a show ip route command that the route to a destination address
exists when IPv4 unicast routing information is set in the router. If no router exists,
refer to Subsection 5.3.2, “Confirming the gateway information of RIP”, to Subsection
5.3.4, “Confirming the peering information of BGP4”.
Figure 5-36 Result of execution of show ip router command
5.3.2 Confirming the gateway information of RIP
Confirm the following using a show ip rip gateway command when a RIP function is
set using the IPv4 unicast routing information of the router.
Make sure that the neighbor router reporting the relevant route is displayed in
the Gateway Address. If the neighbor router is not specified, the GR2000 has not
received the RIP packet from the neighbor router. Troubleshoot the neighbor
router or the interface to the neighbor router.
Make sure that age is displayed within 30 seconds. If age is defined over 30
seconds, the RIP packet will not arrive from the neighbor router periodically.
Troubleshoot the neighbor router or the interface to the neighbor router.
See if Format--AuthFail is displayed in Flags. If it is displayed, the GR2000 has
received an invalid RIP packet from the neighbor router. If this is the case,
troubleshoot the neighbor router.
See if Reject is displayed in Flags. If it is displayed, the RIP packet from the
relevant router is rejected. Specify the
ripin option for the relevant interface by
executing the rip command (interface specified).
See if ImportRestrict is displayed in Flags. If it is displayed, the import filter
might have filtered the packets on the relevant route. Check the import filter
setting in the configuration information.
In other cases, neighbor routers might not have reported the relevant route.
Troubleshoot neighbor routers.
Figure 5-37 Result of show ip rip gateway Command
> show ip route
Total: 10 routes
Destination Next Hop Interface Metric Protocol Age
127/8 127.0.0.1 - 0/0 Direct 300
127.0.0.1/32 127.0.0.1 - 0/0 Direct 300
:
192.168.2/24 192.168.2.101 PAIR1 3/0 RIP 100
:
>
Inspect whether there is a route to the destination address
> show ip rip gateway
Gateway Address Age Flags
192.168.50.185 1s <Accept>
192.168.60.30 14s <Accept>
192.168.70.30 9s <Accept>
:
>