Cabletron Systems CSX1000, CSX1200 manual IP Routing Over Interface Connections

USER’S GUIDE

7.Verify that the hardware address (MAC address) for the IP Host in the CyberSWITCH’s ARP cache is correct. If it is not correct, verify the configuration in the IP Host.

IP HOST MODE OPERATION OVER THE WAN CONNECTION

Problem:

The remote IP Host connected to a WAN RLAN interface on the CyberSWITCH does not receive a ping response from the WAN RLAN interface.

Action:

1.Verify that the WAN connection is up. Use the mc command to check for the connection. If the connection is up, then continue with the next step.

2.If the connection is not up, refer to Remote Device Connectivity.

3.Follow the steps described in the section IP Host Mode Operation Over the LAN Connection.

IP ROUTING OVER INTERFACE CONNECTIONS

This section provides diagnostic information for IP routing over various interface connections.

IP ROUTING OVER THE LAN INTERFACE CONNECTION

Problem:

The system does not display the correct message after the ping command. Instead, the system displays the following message:

No response from <ip-address>

Action:

1.Verify that the routing entry for the destination network exists by entering the following administrative console command:

iproute <ip-address>

If the command returns “No route is available for <ip-address>“, the routing entry does not exist. To correct, add the routing entry using the iproute add Manage Mode command.

2.Check that the system and the specified Host both have the same Subnet mask and Sub network number for that IP address using the ipnetif command (Manage Mode). Correct the Host configuration, or the system configuration (using the iproute change Manage Mode command) as required.

3.Verify that the ARP entry for the specified IP address exists. As required, ping from the IP Host so that the ARP entry is updated. Use the ip arp console command to look at the ARP cache entries. If the ARP cache entry for the Host does not exist, verify that the Host is operational and that the CyberSWITCH and the Host are both physically connected to the same LAN segment.

4.If the ARP cache entry exists for the Host, check that the IP Host has the same encapsulation type as the CyberSWITCH. The system can receive and recognize either Ethernet or SNAP type

392 CyberSWITCH