22 CONFIGURING IP PERFORMANCE
This chapter contains information on the following topics:
■Configure IP Performance
■Configure TCP Performance
■Configure Fast Forwarding
■Display and Debug IP Performance
■Troubleshooting IP Performance Configuration
Configure IP
Performance To configure IP performance, carry out the following steps:
1Configure MTU on an Interface
Perform the following configuration in interface view.
Tabl e 389 Configure maximum transmission unit on an interface
When the Ethernet interface is encapsulated as Ethernet II, the interface mtu
ranges from 46 to 1500 bytes, and default is 1500 bytes. When the Ethernet
interface is encapsulated as SNAP, the interface mtu ranges from 46 to 1492
bytes, and 1492 bytes is default value. The serial port mtu ranges from 128 to
1500 bytes, and 1500 bytes is default value. The BRI port mtu value ranges from
128 to 1500 bytes, and 1500 bytes is default value.
2Configure Queue Length
Perform the following task in system view.
Tabl e 390 Configure queue length
The range of the receiving queue length of all the protocols is 10~1000 bytes, and
75 bytes is the default value.
3Configure Router Forwarding Redirect Packets
The following configurations should be made in system view.
Operation Command
Configure maximum transmission unit on an interface mtu size
Restore default value of maximum transmission unit on an
interface undo mtu
Operation Command
Configure IP receiving queue length ifquelen ip queue-length
Configure IPX receiving queue length ifquelen ipx queue-length
Configure ARP receiving queue length ifquelen arp queue-length
Configure interface queue length ifquelen interface type number
receive-queue queue-length