Chapter 3 Managing the network access devices
89
Nortel Secure Network Access Switch 4050 User Guide
Reimporting the
network access device SSH key using
the CLI
Whenever the network access device generates a new public SSH key, you must
import the new key into the Nortel SNAS 4050 domain.
1
Use the
/cfg/domain #/switch #/sshkey/del
command to delete the
original key.
2
Enter
Apply
to apply the change immediately.
3
Use the
/cfg/domain #/switch #/sshkey/import
command to import
the new key.
4
Enter
Apply
to apply the change immediately.
For more information about the commands, see
“Managing SSH keys for Nortel
SNA communication using the CLI” on page 88
.
Monitoring switch health using the CLI
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 the interval and dead count parameters for the Nortel SNAS 4050
health checks and status-quo mode, use the following command:
/cfg/domain #/switch #/hlthchk
The
HealthCheck
menu displays.
Summary of Contents for 4050
Page 24: ...24 Contents 320818 A ...
Page 48: ...48 Chapter 1 Overview 320818 A ...
Page 70: ...70 Chapter 2 Initial setup 320818 A ...
Page 190: ...190 Chapter 4 Configuring the domain 320818 A ...
Page 232: ...232 Chapter 5 Configuring groups and profiles 320818 A ...
Page 352: ...352 Chapter 7 TunnelGuard SRS Builder 320818 A ...
Page 456: ...456 Chapter 9 Customizing the portal and user logon 320818 A ...
Page 568: ...568 Chapter 10 Configuring system settings 320818 A ...
Page 722: ...722 Chapter 13 Viewing system information and performance statistics 320818 A ...
Page 756: ...756 Chapter 14 Maintaining and managing the system 320818 A ...
Page 768: ...768 Chapter 15 Upgrading or reinstalling the software 320818 A ...
Page 802: ...802 Chapter 17 Configuration example 320818 A ...
Page 880: ...880 Appendix C Supported MIBs 320818 A ...
Page 900: ...900 Appendix F Configuring DHCP to auto configure IP Phones 320818 A ...