HP StorageWorks Enterprise File Services WAN Accelerator - Manual (Page 72)

72 2 C ONFIGURING THE HP EFS WAN A CCELERATOR
4. Use the controls to complete the configuration, as described in the following table.
5. Click Save to write your settings to memory or click Reset to return the settings to
their previous values.
For information on modifying WCCP group settings, see “Modifying WCCP Group
Settings,” next.
Control Description
Add New Service Group Service Group ID. Type the service group identification number (from 0 to 255) in the
text box. The service group ID is the number that is set on the router. A value of 0
specifies the standard http service group.
Router IP. Specify a multicast group IP address or a unicast router IP address. You can
specify up to 32 routers. For information on adding additional routers to the group, see
“Modifying WCCP Group Settings” on page 73 .
Password/Confirm Password. Optionally, you can assign a password to the HP EFS
WAN Accelerator. This password must be the same as the password on the router. WCCP
requires that all routers in a service group have the same password. Passwords are limited
to 8 characters.
Priority. Specify the WCCP priority for traffic redirection. If a connection matches
multiple service groups on a router, the router chooses the service group with the highest
priority. The range is 0-255. The default value is 200.
Weight. Determine how often the traffic is redirected to a particular HP EFS WAN
Accelerator. A higher weight redirects more traffic to that HP EFS WAN Accelerator.
The ratio of traffic redirected to an HP EFS WAN Accelerator is equal to its weight
divided by the sum of the weights of all the HP EFS WAN Accelerators in the same
service group. For example, if there are two HP EFS WAN Accelerators in a service
group and one has a weight of 100 and the other has a weight of 200, the one with the
weight 100 receives 1/3 of the traffic and the other receives 2/3 of the traffic. The range is
0-65535. The default value corresponds to the number of TCP connections your
appliance supports.
NOTE: To enable failover support for WCCP groups, define the service group weight to
be 0 on the backup HP EFS WAN Accelerator. If one HP EFS WAN Accelerator has a
weight 0, but another one has a non-zero weight, the HP EFS WAN Accelerator with
weight 0 does not receive any redirected traffic. If all the HP EFS WAN Accelerators
have a weight 0, the traffic is redirected equally among them.
Encapsulation Scheme. Specify the traffic forwarding and redirection scheme: Generic
Routing Encapsulation (gre) or Layer-2 (l2) redirection. Specify either to use Layer-2
first; if Layer-2 is not supported, gre is used.
Add Group. To add the group to the group list, click Add Group.
Remove Selected Groups. To remove a group from the group list, select it and click
Remove Selected Groups.
WCCP v2 Global Settings Enable WCCP v2 Support. Select this box to enable WCCP v2 Support on all groups
added to the group list.
Multicast TTL. Specify the TTL boundary for the WCCP protocol packets. The default
value is 5.
Update Settings. If you modify global settings, click Update settings to apply the
settings to WCCP groups in the service group list.