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Configuring Dynamic Link Aggregation Application Examples
OmniSwitch 6600 Family Network Configuration Guide April 2006 page 13-35
Link Aggregation and Spanning Tree Example
As shown in the figure on page 13-34, VLAN 10, which uses the Spanning Tree Protocol (STP) with a
priority of 15, has been configured to use dynamic aggregate group 7. The actual physical links connect
ports 3/9 and 3/10 on Switch A to ports 1/1 and 1/2 on Switch B. Follow the steps below to configure this
network:
Note. Only the steps to configure the local (i.e., Switch A) are provided here since the steps to configure
the remote (i.e., Switch B) would not be significantly different.
1 Configure dynamic aggregate group 5 by entering:
-> lacp linkagg 5 size 2
2 Configure ports 5/5 and 5/6 with same actor administrative key (5) by entering:
-> lacp agg 3/9 actor admin key 5
-> lacp agg 3/10 actor admin key 5
3 Create VLAN 10 by entering:
-> vlan 10
4 If the Spanning Tree Protocol (STP) has been disabled on this VLAN (STP is enabled by default),
enable it on VLAN 10 by entering:
-> vlan 10 stp enable
Note. Optional. Use the show spantree ports command to determine if the STP is enabled or disabled
and to display other STP parameters. For example:
-> show spantree 10 ports
Spanning Tree Port Summary for Vlan 10
Adm Oper Man. Path Desig Fw Prim. Adm Op
Port Pri St St mode Cost Cost Role Tx Port Cnx Cnx Desig Bridge ID
-----+---+---+----+----+-----+-----+----+---+-----+---+---+---------------------
3/13 7 ENA FORW No 100 0 DESG 1 3/13 EDG NPT 000A-00:d0:95:6b:0a:c0
2/10 7 ENA FORW No 19 0 DESG 1 2/10 PTP PTP 000A-00:d0:95:6b:0a:c0
5/2 7 ENA DIS No 0 0 DIS 0 5/2 EDG NPT 0000-00:00:00:00:00:00
0/5 7 ENA FORW No 4 0 DESG 1 0/10 PTP PTP 000A-00:d0:95:6b:0a:c0
In the example above the link aggregation group is indicated by the “0” for the slot number.
5 Configure VLAN 10 (which uses dynamic aggregate group 5) to the highest (15) priority possible by
entering:
-> bridge 10 5 mode priority 15
6 Repeat steps 1 through 5 on Switch B. All the commands would be the same except you would substi-
tute the appropriate port numbers.