Consolidation With Sharing of a Physical Port by More Than One Instance
You can enable and disable VLAN filtering on an interface as required. For example, if you need to configure more than 100 VLANs on an instance, assign a dedicated physical interface to that instance and disable VLAN filtering on that interface. Enable VLAN filtering on instances that share a physical interface, so that traffic for one instance is not seen by the other instance.
Note VLAN filtering is not a global setting on the appliance. You enable or disable VLAN filtering on an interface, and the setting applies to all instances associated with that interface. If VLAN filtering is disabled, you can configure up to 4096 VLANs. If VLAN filtering is enabled, you can configure up to 63 tagged VLANs on a 10G interface and up to 32 tagged VLANs on a 1G interface.
In the following example, the instances are part of multiple networks.
- Interface 1/1 is assigned as a management interface to all the instances. Interface 0/1 is assigned to the Management Service, which is part of the internal 10.1.1.x network.
- Citrix NetScaler instances 2 and 3 are in the 10.1.200.x network, and instances 4, 5, 6, and 7 are in the 10.1.3.x network. Instances 2 and 3 each have a dedicated physical interface. Instances 4 and 7 share physical interface 1/7, and instances 5 and 6 share physical interface 10/4.
- VLAN filtering is enabled on interface 1/7. Traffic for Instance 4 is tagged for VLAN 4, and traffic for Instance 7 is tagged for VLAN 7. As a result, traffic for Instance 4 is not visible to Instance 7, and vice versa. A maximum of 32 VLANs can be configured on interface 1/7.
- VLAN filtering is disabled on interface 10/4, so you can configure up to 4096 VLANs on that interface. Configure VLANs 500-599 on Instance 5 and VLANs 600-699 on Instance 6. Instance 5 can see the broadcast and multicast traffic from VLAN 600-699, but the packets are dropped at the software level. Similarly, Instance 6 can see the broadcast and multicast traffic from VLAN 500-599, but the packets are dropped at the software level.
The following figure illustrates the above use case.
Figure 1. Network topology of an SDX appliance with Management Service and Citrix NetScaler instances distributed across networks
The following table lists the names and values of the parameters used for provisioning Citrix NetScaler instances 7 and 4 in this example.
|Parameter Name||Values for Instance 7||Values for Instance 4|
|Total Memory (MB)||2048||2048|
|Packets per second||1000000||1000000|
|Interface||1/1 and 1/7||1/1 and 1/7|
To provision Citrix NetScaler instances 7 and 4 in this example
- On the Configuration tab, in the navigation pane, expand NetScaler Configuration, and then click Instances.
- In the Citrix NetScaler instances pane, click Add.
- In the Provision NetScaler Wizard follow the instructions in the wizard to set the parameters to the values shown in the above table.
- Click Create, and then click Close. The Citrix NetScaler instance you provisioned appears in the Citrix NetScaler instances pane.