Technical data

84 ServerIron ADX Administration Guide

53-1002434-01

Additional system management functions

To increase the delay between packets by 3.2 microseconds, enter commands such as the

following.

ServerIronADX(config) #int e 4

ServerIronADX(config-if-4)# ipg10 4

Syntax: [no] ipg10 <value>

The <value> parameter is 0 – 100 bytes. By default, the delay between packets will be 12 bytes

(9.6 microseconds, ipg10 0).

Modifying the IPG on 100Mbps Ethernet segment

You can modify the inter-packet gap (delay) between packets on a 100Mbps Ethernet segment on a

port-by-port basis. You do this only to adjust the inter-packet gap to match that of older adapters

that do not meet the default IPG requirements for Fast Ethernet.

In determining the value to enter in the CLI command, note that one byte equals.08 microseconds

for packets on a 100Mbps segment, so the following equation can be used.

IPG100 = 0.96 microseconds + (value *.08), where value is the number of bytes by which you want

to increase the inter-packet gap.

To increase the delay between packets by 3.2 microseconds, enter the port to be modified and

then enter the value of 40(40*.08 =3.2 microseconds), such as the following.

ServerIronADX(config)# int e 3

ServerIronADX(config-if-3)# ipg100 40

Syntax: ipg100 <value>

The <value> parameter is 0 to 100. By default, the delay between packets will be 12 bytes (ipg100

0, 0.96 microseconds).

Modifying the IPG on 1000Mbps Gigabit Ethernet segment

You can modify the inter-packet gap (delay) between packets on a 1000Mbps Gigabit Ethernet

segment on a port-by-port basis. You do this only to adjust the inter-packet gap to match that of

older adapters that do not meet the default IPG requirements for Gigabit Ethernet.

In determining the value to enter in the CLI command, note that one byte equals.008 microseconds

for packets on a 1000Mbps segment, so the following equation can be used.

IPG1000 =.096 microseconds + (value *.008), where value is the number of bytes by which you

want to increase the inter-packet gap.

To increase the delay between packets by.32 microseconds, first enter the port to be modified and

then enter the value of 40(40*.008 =.32 microseconds), such as the following.

ServerIronADX(config)# int e 3

ServerIronADX(config-if-3)# ipg1000 40

Syntax: ipg1000 <value>

By default, the delay between packets will be 12 bytes (.096 microseconds, ipg1000 0).