HP StorageWorks Enterprise File Services WAN Accelerator Deployment Guide (November 2005)

HP EFS WAN ACCELERATOR DEPLOYMENT GUIDE 65

7 - WCCP DEPLOYMENTS

service group

Specifies the service group identification number (ID) (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

which redirects only HTTP traffic.

router

<ip_address>

The router IP is a multicast group IP address or a unicast router

IP address. A total of 32 routers can be specified.

flags <hash-bit-

identifier>

Specifies the combination of src-ip-hash, dst-ip-hash, src-port-

hash, dst-port-hash, ports-dest, ports-source that define the

fields the router hashes on and if certain ports should be

redirected.

ports

Specifies a comma separated list of up to seven ports that the

router will redirect. Use only if ports-dest or ports-source

service flag is set.

priority <priority-

number>

Specifies 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.

password <string> Specifies the WCCP password. 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.

weight <value> The weight determines 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 HP EFS WAN Accelerator model

number.

encap_scheme

Specifies the traffic forwarding and redirection scheme: GRE

encapsulation (gre) or Layer-2 (l2) redirection. The either value

uses Layer-2 first—if Layer-2 is not supported, gre is used.