Configuring the WSM using Device Manager

Defining IP Address Ranges for the Local Route Cache

The Local Route Cache lets you reduce the size of the ARP table on the WSM by defining a range of addresses that will be cached. The local network address defines the base IP address in the range which will be cached, and the local network mask is the mask which is applied to produce the range. To determine if a route should be added to the memory cache, the destination address is masked (bitwise AND) with the local network mask and checked against the local network address.

By default, the local network address and mask are both set to 0.0.0.0. This produces a range that includes all Internet addresses for route caching: 0.0.0.0 through 255.255.255.255.

Addresses to be cached are subnets that are directly connected to a configured interface. the following table shows an example you could configure to limit the route cache to your local hosts. 

Note: All addresses that fall outside the defined range are forwarded to the default gateway. The default gateways must be within range.

See also:

• Adding and removing local networks
• Configuring IP interfaces
• Configuring default gateways
• Enabling IP forwarding
• Viewing IP routes
• Configuring domain name system servers
• Configuring routing information protocol
• Configuring IP forwarding per port
• Configuring static routes
• Configuring virtual router redundancy protocol