Nortel Networks 4050 User Manual

Chapter 3 Managing the network access devices 111

Nortel Secure Network Access Switch 4050 User Guide

 

The switch SSH Key screen appears (see 

Click Delete Switch SSH Key.

Click Apply on the toolbar to send the current changes to the Nortel 
SNAS 4050. Click Commit on the toolbar to save the changes permanently.

Click Import SSH from Switch.

Click Apply on the toolbar to send the current changes to the Nortel 
SNAS 4050. Click Commit on the toolbar to save the changes permanently.

For more information about the SSH Key commands, see 

The Nortel SNAS 4050 continually monitors the health of the network access 
devices. At specified intervals, a health check daemon sends queries and 
responses to the switch as a heartbeat mechanism. If no activity (heartbeat) is 
detected, the daemon will retry the health check for a specified number of times 
(the dead count). If there is still no heartbeat, then after a further interval (the 
status-quo interval) the network access device moves all its clients into the Red 
VLAN. When connectivity is re-established, the Nortel SNAS 4050 synchronizes 
sessions with the network access device.

The health check interval, dead count, and status-quo interval are configurable.

To configure parameters for the Nortel SNAS 4050 health checks, complete the 
following steps:

Select the Secure Access Domain > domain > Switches > switch > Health 
Check tab.