wccp

Description

Use the wccp command to configure the Web Cache Communications Protocol (WCCP).

Use the no form of the command to remove a WCCP configuration.

Syntax

wccp {enable | disable}

wccp multicast-ttl <1..15>

wccp <51..255> admin {up | down}

wccp <51..255> assignment method {hash | mask | either}

wccp <51..255> assignment method {hash | mask | either} assignment-detail {lan-ingress | wan-ingress}

wccp <51..255> assignment method {hash | mask | either} assignment-detail custom hash-srcip {enable | disable} hash-dstip {enable | disable} hash-srcport {enable | disable} hash-dstport {enable | disable} mask-srcip <32-bit value in hex> mask-dstcip <32-bit value in hex> mask-srcport <16-bit value in hex> mask-dstport <16-bit value in hex>

wccp <51..255> compatibility-mode {ios | nexus}

wccp <51..255> force-l2-return {enable | disable}

wccp <51..255> forwarding-method {gre | l2 | either}

wccp <51..255> password <password>

wccp <51..255> router <IP address> protocol {tcp | udp} interface {lan0 | wan0}

wccp <51..255> router <IP address> protocol {tcp | udp} interface {lan0 | wan0} priority <0..255> [forwarding-method {gre | l2 | either}]

wccp <51..255> router <IP address> protocol {tcp | udp} interface {lan0 | wan0} priority <0..255> forwarding-method {gre | l2 | either} [weight <0..65535>]

wccp <51..255> router <IP address> protocol {tcp | udp} interface {lan0 | wan0} priority <0..255> forwarding-method {gre | l2 | either} weight <0..65535> [password <password>]

wccp <51..255> weight <weight>

no wccp <51..255>

Arguments

wccp <51..255>	Specifies a WCCP service group ID.
admin up	Enables a WCCP service group.
admin down	Disables a WCCP service group.
assignment-detail {custom | lan-ingress | wan-ingress}	Specifies the details of the service group assignment method. The options are: • custom – Assignment by custom values • lan-ingress – Assignment by hash default. Uses the source address for distribution • wan-ingress – Assignment by mask default. Uses the destination address for distribution in the router/L3 switch table.
assignment-detail custom	Specifies the details of the service group assignment method. The options are: • hash-srcip {enable | disable} – Enable/disable using the hash source IP • hash-dstip {enable | disable} – Enable/disable using the hash destination IP • hash-srciport {enable | disable} – Enable/disable using the hash source port • hash-dstport {enable | disable} – Enable/disable using the hash destination port • mask-srcip <32-bit value in hex> – Specifies the mask source IP as a 32-bit hex value • mask-dstip <32-bit value in hex> – Specifies the mask destination IP as a 32-bit hex value • mask-srcport <16-bit value in hex> – Specifies the mask source port as a 16-bit hex value • mask-dstport <16-bit value in hex> – Specifies the mask destination port as a 16-bit hex value
assignment-method {hash | mask | either}	Modifies the service group assignment method. This relates to how load balancing (of what packets go to which appliance) is set up with the router. The options are: • hash • mask • either – The assignment method is either hash or mask. In other words, the appliances will accept packets of either method from the router.
compatibility-mode {ios | nexus}	If a WCCP group is peering with a router running Nexus OS, then the appliance must adjust its WCCP protocol packets to be compatible. By default, the appliance is IOS-compatible.
disable	Disables the WCCP feature.
enable	Enables the WCCP feature.
force-l2-return	Modifies the service group’s force L2 return. When WCCP has negotiated L3 forwarding and return methods, Force L2 Return can be used to strip the WCCP GRE header from any packets returned to the router (that is, pass-through traffic). This feature is not applicable if the negotiated forwarding method is L2. NOTE: Routing loops may occur if L2 returned packets are forwarded again to the appliance by a WCCP group.
forwarding-method {gre | l2 | either}	Modifies the service group’s forwarding method. The options are: • GRE forwarding method • L2 forwarding method • Either forwarding method
interface {lan0 | wan0}	Modifies service group interface.
multicast-ttl <1..15>	Sets the Time To Live (TTL) value. The range is 1–15.
password <password>	Sets a password for the WCCP service group.
service-grp <51..255>	Specifies a comma-delimited list of service group IDs.
router <IP address>	• Use comma separator to specify more than one IP. • Use the physical IP for L2 redirection. • Use the loopback IP for L3 redirection.
protocol {tcp | udp}	Configures the WCCP service group protocol for this router IP address.
priority <0..255>	Specifies the WCCP service group’s priority. Values range from 0 to 255.
weight <0..100>	Specifies the WCCP service group weight. 100 is the highest weight. When there is more than one appliance in a group, weight is used to distribute hash or mask assignment buckets on the router in order to load balance flows.

Defaults

None.

Command Mode

Global Configuration Mode

See Also

See “show wccp”.

Usage Guidelines

To generate output for the assignment and detail arguments, you must enable WCCP after configuration.

Examples

None.

 

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