Cisco Systems BC-109 manual Enable or Disable the SSE, Establish the Connection Timeout Interval

Enable or Disable the SSE

Enable or Disable the SSE

The Silicon Switch Engine (SSE) acts as a programmable cache to speed the switching of packets. To enable or disable the SSE, use one of the following commands in interface configuration mode:

Command	Purpose
source-bridge route-cache sse	Enable the SSE function.
no source-bridge route-cache sse	Disable the SSE function.

Establish the Connection Timeout Interval

It may be necessary to adjust timeout intervals in a complex topology such as a large multihop WAN with virtual rings or satellite links. The timeout interval is used when a connection to a remote peer is attempted. If the timeout interval expires before a response is received, the connection attempt is aborted.

To set the connection timeout interval, use the following command in global configuration mode:

Command	Purpose
source-bridge connection-timeout seconds	Set the connection timeout interval.

Optimize Explorer Processing

Efficient explorer processing is vital to the operation of SRB. The default configuration is satisfactory for most situations. However, there might be circumstances that create unexpected broadcast storms. You can optimize the handling of explorer frames, thus reducing processor overhead and increasing explorer packet throughput. Optimizing explorer processing enables the router to perform substantially better during explorer broadcast storms.

In networks with redundant topologies—two or more routers connected to the same set of Token Rings and doing source-route bridging—a station on one Token Ring trying to get to a station on another Token Ring may choose a less than optimal route through unnecessary routers, causing explorer storms due to excessive forwarding of explorer frames. For example, in the redundant topology example shown in Figure 54, if Station X on Token Ring 1 attempts to get to Station Z on Token Ring 4 by going through Router A, Token Ring 2, and Router B—a less than optimal route, excessive forwarding of explorer frames may cause explorer storms.

Configuring Source-Route Bridging BC-141