Citrix NetScaler EE, Руководство по установке и настройке

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1. On the SD-WAN appliance, Navigate to Configuration > Appliance Settings > Advance Deployments > WCCP page.
2. If the Enable Enable button is displayed, click it to enable WCCP mode on the appliance. (If the Disable button is displayed,
WCCP mode is already enabled.)
Note: We will actually be configuring two caches.
3. In the Select Mode area, select Single Single Cache Cache.
4. Starting with accelerator instance #1 (labeled “WCCP Cache 1” on the page), configure the SD-WAN IP Details by
entering the external VIP you defined for accelerator instance 1 (T5 on your worksheet for instance #1, T6 for instance
#2). Set the subnet mask for the external traffic network (T2 on your worksheet). Set the gateway IP for the external
traffic network (T1 on your worksheet). Click Save. The Configure Service Group controls appear.
5. In the Configure Service Group section, click Add. An Add Service Group popup appears.
6. In the Service Group Details area, specify a WCCP service group ID in the ID field. This ID must match one of the service
groups that you have defined on your router. Start with the lowest-numbered service group in your list (T11 for the TCP
service class, T12 for the UDP service class.).
7. In the WCCP Priority field, set the WCCP priority to 100 for instance #1, or to 80 for instance #2. (Other values work. Use
a priority for instance #1 that is greater than the priority for instance #2, and use a priority for instance #2 that is
greater than zero.)
8. From the Protocol list, select a protocol. You will perform this step for both TCP and UDP. Start with TCP.
9. In the Service Group Password field, enter a password if your router is configured to require one. Otherwise, leave the
field blank.
10. In the Router Communications Details area, in the Router IP Address field, enter the IP address of the router. This is the
router’s address for its appliance-facing interface (T8 on your worksheet). If you use multiple routers to communicate
with the appliance, list them all here.
11. From the Router Assignment list, select a router assignment (Hash, Mask, or Auto). Auto is recommended. If Auto is
selected, Hash is negotiated if the router supports it. Otherwise Mask is used.
12. From the Router Forwarding list, select Level 2 Level 2 or GRE GRE. The same method must be used for both outbound and inbound
packets. L2 is recommended whenever possible, as GRE adds overhead to both the router and the appliance. L2 requires
that your router support Level 2, and that the router’s IP and the VIP addresses be in the same subnet. Otherwise, use
GRE.
13. Click Create.
14. Repeat steps 6-13 with the next service group in sequence, but selecting UDP instead of TCP.
15. Repeat steps 4-14 for instance #2 (called “WCCP Cache 2” in the GUI), except that the Cache IP is T6 from your
worksheet (instead of T5), and the WCCP priority value is 80 (instead of 100).
16. If desired, click Advanced Settings on the WCCP page and select a quicker timeout (Responsive or Tolerant, rather than
Default). This is a WCCP 2.1 feature and is not supported by all routers. If the appliance has trouble connecting to the
router, set this parameter back to Default.
Note: You must consider the following points when configuring a Citrix SD-WAN 4000/5000 appliance:
Traffic is load balanced across the accelerators on the basis of NetScaler load balancing policies.
The WCCP service group ID that you assign to the accelerator must match a service group defined on your router, or the
WCCP negotiation fails.