Hitachi US7070447-001 - Manual (Page 69)

Troubleshooting at the Network Layer
US7070447-001, Rev 01 10-5
Draft Level—Hitachi Confidential
Troubleshooting IP
Problem: A n external router is connected to my switch. I can ping the router
interface on my network but cannot reach any networks beyond the
router.
Solution: Use the following solutions:


Verify that the gateway IP address(es) on the endstation(s) points to
the IP address of the VLAN(s) it is connected to. Also, verify that
your own IP address and that of the end station you are trying to
connect to is correct


Ensure that RIP is active per VLAN.
VLAN/CONFIG >modify <vlan#>


Check the Routing table on the switch to verify that all networks are
learned. If not, you may need to configure a default route of 0.0.0.0.
/INET/SHOW >route
/INET/CONFIG/ROUTE >default


Verify that the user endstation(s) and the VLAN(s) on the switch are
using the same subnet masks.
/VLAN/SHOW >vrouter


Check all router interfaces to ensure they are up and active.


Verify that the HS150 port is in the correct VLAN.
/VLAN/SHOW >vlan


Check broadcast address on the router to verify that it is the same as
the end node expects. On the HiSpeed switch, type:
/VLAN/CONFIG >modify <vlan#>
Problem: Performance is slow when routing across different networks.
Solution: Use the following solutions:


By default, IP Forwarding is enabled on the switch. Configure
the switch for Route Cache Forwarding.
/INET/CONFIG/ipr