Perle Systems SCS, STS manual Host Problems, Radius Authentication Problems

Host Problems

Host Problems

Cannot access a host by name:

zIf using DNS or if DNS is required, ensure a nameserver is configured on your IOLAN and is accessible (ping it).

zIf not using DNS, verify that the host is configured in the Host Table. Check access to the host by pinging it using the host’s IP address.

Cannot access a host on a local network, verify:

zThe network address is correct.

zThe subnet mask is set correctly and reflects the network configuration.

zThe broadcast address is set correctly and reflects the network configuration.

Cannot access a host on a remote network:

zUse the show route command to verify that there is a route to the remote host. If no gateway is specified, verify that a default gateway is specified. Ping the default gateway to check if it is working.

zConsider the situation beyond the gateway; for example, are intermediate gateways and the remote host available? Also, check the messages returned by the ping command; for example, that a particular host or gateway is unreachable.

Gateways added into the gateway table are ignored by the IOLAN:

zHave you used BOOTP and entered a single static gateway in the bootptab file entry? If yes, the other gateways will be ignored.

Access to host lost after a few minutes.

zIf the route to this host goes through routers, make sure those routers are all sending RIP packets across the networks.

RADIUS Authentication Problems

User is waiting up to 60 seconds before login is accepted or denied and Authentication is set to RADIUS. User has entered User Name and Password, and has pressed Enter.

zCheck RADIUS configuration of primary and secondary authentication/accounting hosts specified, if you have retry and timeout values greater than the default, the IOLAN will be spending time trying each of these hosts and keeping the user waiting.

zAdjust RADIUS configuration: specify just one host, reduce Timeout and Retry values to the default or less than default.

You cannot progress beyond the login and password prompts when authentication is set to

RADIUS:

zOn the RADIUS host, check the secret (password), you should see it displayed in clear text in the RADIUS clients file. If you are unsure whether it is the same secret which you entered in the IOLAN, go to the IOLAN and re-enter a new secret.

zOn the RADIUS host, verify that there is only one entry for a particular user; do not have multiple entries of the same user name (even if the passwords are different).

Troubleshooting 395