Enterasys Networks CSX7000 Manuale Utente Scaricare il pdf (Pagina 428)

100

101

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.

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 <ip-address>

Try the following:

a. Verify that the routing entry for the destination network exists by entering the following

console command:

iproute <ip-address>

b. If the command returns “No route is available for <ip-address>”, 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.

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Enterasys Networks CSX7000 Manuale Utente Pagina 428

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