A routing table overflow in the terminal concentrator can cause network connections to be intermittent or lost altogether. Symptoms include connection timeouts and routes that are reestablished, then disappear, even though the terminal concentrator itself has not rebooted.
The following procedure fixes this problem by establishing a default route within the terminal concentrator. To preserve the default route within the terminal concentrator, you must also disable the routed feature.
# telnet tc-name
Specifies the name of the terminal concentrator
... Enter Annex port name or number: cliannex:
The default password is the terminal concentrator's IP address.
annex: su Password:
annex# edit config.annex
The config.annex file, which is created in the terminal concentrator's EEPROM file system, defines the default route. The config.annex file can also define rotaries that enable a symbolic name to be used instead of a port number.
Substitute the appropriate IP address for your default router.
%gateway net default gateway 220.127.116.11 metric 1 active ^W
annex# admin set annex routed n
annex# boot bootfile: <reboot> warning: <return>
While the terminal concentrator is rebooting, you cannot access the node consoles.
The following example shows how to establish a default route for the terminal concentrator.
admin-ws# telnet tc1 Trying 18.104.22.168 ... Connected to 22.214.171.124. Escape character is '^]'. [Return] Enter Annex port name or number: cli ... annex: su Password: root-password annex: edit config.annex (Editor starts) Ctrl-W:save and exit Ctrl-X:exit Ctrl-F:page down Ctrl-B:page up %gateway net default gateway 126.96.36.199 metric 1 active ^W annex# admin set annex routed n You may need to reset the appropriate port, Annex subsystem or reboot the Annex for changes to take effect. annex# boot