Configuring IPG on a 10/100/1000M port
To configure an IPG of 112 on Ethernet interface 0/1/21, for example, enter the following command.
device(config)# interface ethernet 0/1/21
device(config-if-e1000-0/1/21)# ipg 112
For multiple interface levels, to configure IPG for ports 0/1/11 and 0/1/14 through 0/1/17, enter the
following commands.
device(config)# interface ethernet 0/1/11 ethernet 0/1/14 to 0/1/17
device(config-mif-0/1/11,0/1/14-0/1/17)# ipg 104
Syntax: [no] ipg value
For value , enter a number in the range from 48-120 bit times in multiples of 8. The default is 96.
As a result of the above configuration, the output from the show interface Ethernet 0/1/21 command is
as follows.
device# show interfaces ethernet 0/1/21
GigabitEthernet 0/1/21 is up, line protocol is up
Port up for 40 seconds
Hardware is GigabitEthernet, address is 0000.0004.4014 (bia 0000.0004.4014)
Configured speed auto, actual 100Mbit, configured duplex fdx, actual fdx
Configured mdi mode AUTO, actual MDIX
Member of L2 VLAN ID 1, port is untagged, port state is FORWARDING
BPDU Guard is disabled, Root Protect is disabled
STP configured to ON, priority is level0
Flow Control is config enabled, oper enabled, negotiation disabled
Mirror disabled, Monitor disabled
Not member of any active trunks
Not member of any configured trunks
No port name
Inter-Packet Gap (IPG) is 112 bit times
IP MTU 10222 bytes
300 second input rate: 0 bits/sec, 0 packets/sec, 0.00% utilization
300 second output rate: 248 bits/sec, 0 packets/sec, 0.00% utilization
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts, 0 multicasts, 0 unicasts
0 input errors, 0 CRC, 0 frame, 0 ignored
0 runts, 0 giants
80 packets output, 5120 bytes, 0 underruns
Transmitted 0 broadcasts, 80 multicasts, 0 unicasts
0 output errors, 0 collisions
Enabling and disabling support for 100BaseTX
For FastIron X Series devices, you can configure a 1000Base-TX SFP (part number E1MG-TX) to
operate at a speed of 100 Mbps. To do so, enter the 100-tx command at the Interface level of the CLI.
device(config-if-e1000-11)# 100-tx
After the link is up, it will be in 100M/full-duplex mode, as shown in the following example.
device# show interface brief ethernet 11
Port Link State Dupl Speed
Trunk Tag Priori MAC Name
11 Up Forward Full 100M
None No level10 0000.0013.c74b
The show media command will display the SFP transceiver as 1G M-TX .
Syntax: [no] 100-tx
To disable support, enter the no form of the command.
Configuring IPG on a 10/100/1000M port
FastIron Ethernet Switch Administration Guide 73
53-1003625-01
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