To demonstrate how to configure Virtual MAC on NetScaler Interface Channel (LACP or LR). The primary reason for using VMACs is that GARP may not be honored by Layer 3 devices in your Network. This can cause communication issues which will present during fail-over of a NetScaler. The resolution to that issue is to employ VMACs on interfaces.

Instructions

1. Navigate to System->Network->VMAC.
2. Click Add.
3. Enter an ID number from 1 to 255 for the Router ID. This simply is a unique Identifier for the VMAC.
   
4. Click Add next to Associate Interfaces.
5. Click the + next to the Channel to add to the VMAC.
   
6. Click Create.

After you have created an LACP channel by specifying interfaces, you can modify properties of the channel.

To modify an LACP channel by using the CLI:

At the command prompt, type:

• set channel <id> [-ifnum <interfaceName> …] [-state ( ENABLED | DISABLED )] [-speed <speed>] [-flowControl <flowControl>] [-haMonitor ( ON | OFF )] [-ifAlias <string>] [-throughput <positive_integer>] [-tagall (ON | OFF)] [-bandwidthHigh <positive_integer> [-bandwidthNormal <positive_integer>]]

• show channel