3Com Router Command Reference Guide — V1.00DescriptionUsing the ip fast-forwarding cache-size command, you can configure the size ofthe fast-forwarding table. Using the undo ip fast-forwarding cache-size command,you can restore the default size.By default, the size of the fast-forwarding table is 4K bytes.The fast-forwarding table size is limited by the cache capacity. The relationship isshown below:Table 3-1 Relationship between fast-forwarding table size and cache capacityFast-forwarding table size Configurable cache capacityCache capacity ≤ 32M≥ 4k, 16k32M < cache capacity ≤ 64N 4k, 16k, 64k, 256kCache capacity > 64M 4k, 16k, 64k, 256k, 1MExample# Configure the size of fast-forwarding table as 64Kbytes.[Quidway] ip fast-forwarding cache-size 64K3.3.5 ip fast-forwarding flow-controlSyntaxip fast-forwarding flow-control { on | threshold value }undo ip fast-forwarding flow-control { on | threshold }ViewSystem viewParameteron: Enable IP fast-forwarding flow-control.threshold value: The value of flow control threshold.DescriptionUsing the ip fast-forwarding flow-control command, you can configure IPfast-forwarding flow-control threshold and on/off. Using the undo ip fast-forwardingflow-control command, you can restore the default status.62
