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4-6 SmartSwitch ATM User Guide
UNI Routes Routing
4. Enter the show atmroute command to check that the UNI route was added.
SmartSwitch # show atmroute
AddressNumber(ALL) :
No. Port Route Address Type Protocol
================================================================================
1 7B4 39:00:00:00:00:00:00:00:00:00:14:41:80:00:20:d4:14:41:80 I MGMT
2 7B4 39:00:00:00:00:00:00:00:00:00:14:41:80:00:20:d4:14:41:81 I MGMT
3 -- 39:00:00:00:00:00:00:00:00:00:14:59:00 I PNNI
4 7A2 39:00:00:00:00:00:00:00:00:00:14:59:00:00:11:22:33:44:55 I MGMT
— Our added UNI route
5 -- 39:00:00:00:00:00:00:00:00:00:28:e9:80 I PNNI
6 -- 39:00:00:00:00:00:00:00:00:00:28:f5:00 I PNNI
7 7B4 47:00:79:00:00:00:00:00:00:00:00:00:00:00:a0:3e:00:00:01 I MGMT
8 5B2 52:00:00:00:00:00:00:00:00:00:14:51:80 I MGMT
SmartSwitch #
The UNI route appears in the table as Route 4, with Protocol Type of MGMT (management).
Note For UNI routes to work with certain devices, ILMI may also need to be disabled
on the ATM SmartSwitch. Use the
set portconfig command to disable ILMI on
the ATM SmartSwitch on a per-port basis.
4.3.1 UNI Link Timing
By default, if a UNI link loses connectivity, the link fails after three (3) seconds. This short amount of time is designed
as a buffer in case of minor latency. By waiting three seconds before releasing resources and tearing down the
connection, a minor latency occurrence (less than three seconds) will not bring down the route.
However, certain time-sensitive implementations may require that link fail occurs either immediately or after a longer
period of time than three seconds. Use the
set linkmonitortimeout command to control the time required for the
SmartSwitch ATM switch to assume a UNI route has failed.
For example, a SmartSwitch ATM switch is connected to two UNI uplinks (one active, one standby) through two
separate ports. One switch port is connected to the active UNI uplink and the other switch port is connected to the
standby UNI uplink. To configure the switch to immediately recognize any lapse in traffic on the active UNI uplink
port as a downed link, enter the following on the SmartSwitch ATM switch:
SmartSwitch # set linkmonitortimeout
TimeoutValue(3) : 0
— Make the timeout instantaneous
SmartSwitch #
If the active UNI uplink fails-over to the standby UNI uplink, the SmartSwitch ATM switch port connected to the failed
active uplink immediately frees up all resources, and begins accepting traffic on the port connected to the standby UNI
uplink.
Notice that the
set linkmonitortimeout command controls the TimeoutValue on a switch-wide basis (not a per-port
basis).