HP StorageWorks Enterprise File Services WAN Accelerator - Manual (Page 96)

96 C ONFIGURING THE HP EFS WAN A CCELERATOR
5. Click Save to save your settings permanently or click Reset to return the settings
to their previous values.
Modifying
WCCP Group
Settings You modify WCCP service group settings, add additional routers to a service group,
and set flags for source and destination ports to redirect traffic (that is, the hash table
settings) in the Advanced Networking - WCCP Service Group: <group ID> page.
Before you can modify WCCP service group settings, you must create a WCCP service
group. For information on creating a WCCP service group, see
“Enabling WCCP
Groups” on page 94 .
For detailed information about hash table settings for WCCP, see the Cisco
documentation Web site at http://www.cisco.com/univercd/home/home.htm.
Add New Service Group Service Group ID. Specify the service group identification number (from 0 to 255).
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 96 .
Password/Confirm Password. Optionally, you can assign a password to the HP EFS
WAN Accelerator. This password must be the same password that is 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. Click Add Group to add the group to the Service Group list.
Remove Selected Groups. To remove an entry, select it and click Remove Selected
Groups.
Control Description