Enterasys Networks CSX6000 - Manual (Page 428)

USER’S GUIDE
428 CyberSWITCH
Each section below uses example entries to verify IP Host mode operation. IP addresses are specific
to the examples. Substitute the IP addresses of your network when you perform the IP Host mode
feature verification steps. Each section also uses the
ip ping command. The ip ping command
sends a packet to a specified host, waits for a response, and reports success or failure. Substitute the
equivalent command on your IP host.
V ERIFICATION OVER A LAN CONNECTION
1. Determine if the CyberSWITCH can access the local IP host. Type:
ip ping 100.0.0.2
2. If a message similar to the following is displayed, the IP host mode feature over the specified
LAN port is operational. Repeat this step for each LAN port on your Ethernet resource.
100.0.0.2 is alive
3. You may have a problem if you receive the message:
No response from
Try the following:
a. Verify that the routing entry for the destination network exists by entering the following
console command:
iproute
b. If the command returns “ No route is available for ”, the routing
entry does not exist. To correct, add the static routing entry using the iproute add
Manage Mode command.
c. Check that the CyberSWITCH and the specified Host both have the same Subnet mask and
Sub network number for that ip-address using the
ipnetif Manage Mode command.
Correct the Host configuration, or the system configuration (using the iproute change
Manage Mode command) as required.
d. 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 command to look at the ARP cache
entries. (This command is described in the System Commands chapter.) 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.
e. If the ARP cache entry exists for the Host, check that the IP Host has the same
encapsulation type as the CyberSWITCH. The CyberSWITCH can receive and recognize
either Ethernet or SNAP type encapsulations. Correct the IP Host or CyberSWITCH
configuration (using CFGEDIT) for encapsulation type.
f. Try to ping the Host from another device on the LAN. If this is also unsuccessful, this may
indicate a problem with the Host.
g. 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.