Hitachi US7070447-001 Troubleshooting VLANs, Problem Cannot ping a users on a different VLAN

Draft Level—Hitachi Confidential

VLAN Concepts

Troubleshooting VLANs

Problem: Cannot ping a user(s) on a different VLAN.

Solution: Verify the following:

￿Verify that the port(s) the user(s) is connected to has the correct VLAN number(s) assigned to it.

/VLAN/SHOW >vlan

￿Verify that you can ping the switch itself. By default, the switch is not pre-configured with an IP address. Therefore, you must enable IP and assign an address to it.

/VLAN/CONFIG >modify <vlan#> /VLAN/CONFIG >create <vlan#>

￿Verify that the user endstation(s) and the VLAN(s) on the switch are using the same subnet masks.

/VLAN/SHOW >vrouter

￿Verify that the gateway IP address(es) on the endstation(s) points to the IP address of the VLAN(s) it is connected to.

￿Check the ARP table on the switch to verify if the switch is learning the endstation(s) address(es).

/INET/SHOW >ARP

￿Check the Routing table on the switch to verify that all networks are learned.

/INET/SHOW >route

￿Check the Forwarding table to verify the correct MAC addresses are learned.

/VBRIDGE/SHOW >vfwt

￿Ping from the switch to the end nodes.

￿Ensure that RIP is active per VLAN.

/VLAN/CONFIG >modify <vlan#>

US7070447-001, Rev 01 8-3