Accton Technology ES4626 - Manual (Page 311)

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9.3 IP Forwarding
9.3.1 Introduction to IP Forwarding
Gateway devices can forward IP packets from one subnet to another; such
forwarding uses routes to find a path. IP forwarding of ES4624-SFP/ES4626-SFP switch
is done with the participation of hardware, and can achieve wire speed forwarding . In
addition, flexible management is provided to adjust and monitor forwarding.
ES4624-SFP/ES4626-SFP switch supports aggregation algorithm enabling/disabling
optimization to adjust generation of network route entry in the switch chip and view
statistics for IP forwarding and hardware forwarding chip status.
9.3.2 IP Route Aggregation Configuration Task
1. Set whether IP route aggregation algorithm with/without optimization should be
used.
Command Explanation
ip fib optimize
no ip fib optimize
Enables the switch to use optimized IP
route aggregation algorithm; the “no ip fib
optimize ” disables the optimized IP route
aggregation algorithm.
9.3.3 Commands for IP Route Aggregation
9.3.3.1 ip fib optimize
Command: ip fib optimize
no ip fib optimize
Function: Enables the switch to use optimized IP route aggregation algorithm; the “no ip
fib optimize ” disables the optimized IP route aggregation algorithm.
Default: Optimized IP route aggregation algorithm is disabled by default.
Command mode: Global Mode
Usage Guide:
This command is used to optimize the aggregation algorithm: if the route
table contains no default route, the next hop most frequently referred to will be used to
construct a virtual default route to simplify the aggregation result. This method has the
benefit of more effectively simplifying the aggregation result. However, while adding a
virtual default route to the chip segment route table reduces CPU load, it may introduce
unnecessary data stream to switches of the next hop. In fact, part of local switch CPU