multi-spx-lag
Individual SPX links, rather than an SPX LAG, exist before the command is executed.
CB configuration mode
SPX unit configuration mode
The
no form of the command removes SPX LAGs in a live link.
The
no multi-spx-port and
no multi-spx-lag commands provide the only way to change a PE ring to two chains or one chain without
physically removing the cable. The removed spx-ports and spx-lags are brought down
and disabled in configuration.
The system blocks the
multi-spx-lag command if executing the command would make any PE unreachable.
This command changes both ends of a live CB-to-PE or PE-to-PE link at the same time to form an SPX LAG. Using the command avoids generating transit port-to-LAG connections and breaking internal communication.
Both
multi-spx-port
and
multi-spx-lag are available in CB configuration mode and SPX unit configuration modes.
The following example creates a live LAG in CB configuration mode between the designated ports on CB unit 3 and PE unit 24.
device# configure terminal device(config)# spx cb-configure device(config-spx-cb)# multi-spx-lag 3/1/6 3/1/8 and 24/3/1 24/4/1 spx-port 24/4/1 is replaced by spx-lag 24/3/1 24/4/1. spx-port 3/1/8 is replaced by spx-lag 3/1/6 3/1/8.
The following example creates a live LAG between PE unit 17 and PE unit 24 as part of configuring PE unit 24 from the CB in SPX unit configuration mode. In this case, the command could be configured either under spx unit 17 or spx unit 24.
device# configure terminal device(config)# spx unit 24 device(config-spx-unit-24)# multi-spx-lag 24/2/1 to 24/2/2 and 17/2/1 to 17/2/2 spx-port 17/2/1 is replaced by spx-lag 17/2/1 to 17/2/2. spx-port 24/2/1 is replaced by spx-lag 24/2/1 to 24/2/2.
The following example uses the
no multi-spx-lag command to remove an SPX LAG between PE units 26 and 27 in a live system and disables
related ports on both units.
device# show spx
… snipped
active standby
+---+ +---+ +---+
=2/1| 2 |2/4--2/4| 3 |2/1==2/1| 1 |2/4=
| +---+ +---+ +---+ |
| |
|-------------------------------------|
+----+ +----+ +----+ +----+ +----+
1/1/5==3/1| 17 |2/2--2/2| 27 |2/3==2/1| 26 |2/5==2/5| 25 |2/1==2/5| 24 |2/1=
+----+ +----+ +----+ +----+ +----+ |
|
+----+ |
2/1/9--4/1| 23 |2/1=
+----+
device# config terminal
device(config)# spx unit 27
device(config-spx-unit-27)# no multi-spx-lag 27/2/3 to 27/2/4 and 26/2/1 to 26/2/2
Bring down ports: 26/2/1 to 26/2/2 27/2/3 to 27/2/4
Wait for 20 sec before removing spx-lags. These ports will be disabled in configuration.
spx-lag 26/2/1 to 26/2/2 is removed
spx-lag 27/2/3 to 27/2/4 is removed
device(config-spx-unit-27)#
device(config-spx-unit-27)# show spx
… snipped
active standby
+---+ +---+ +---+
=2/1| 2 |2/4--2/4| 3 |2/1==2/1| 1 |2/4=
| +---+ +---+ +---+ |
| |
|-------------------------------------|
+----+ +----+
1/1/5==3/1| 17 |2/2--2/2| 27 |
+----+ +----+
+----+ +----+ +----+ +----+
2/1/9--4/1| 23 |2/1==2/1| 24 |2/5==2/1| 25 |2/5==2/5| 26 |
+----+ +----+ +----+ +----+