Example; Configuring Port Link Flap Detection - Enterasys C5G124-24 Configuration Manual

Configuring Port Link Flap Detection

Procedure 8-1 Configuring SFP Ports for 100BASE-FX
Step
4.
5.

Example

This example shows how to configure port ge.2.1 in the G3G-24SFP module to operate with a
100BASE-FX transceiver installed. First, the module is verified as present in Slot 2, and the port
status is shown as operating as a 1000BASE-SX port. After the 1-Gigabit transceiver is replaced
with the a 100 Mbps transceiver, the port is configured appropriately and the new settings are
verified.
G3(su)->show version
Slot
----
1
2
3
4
G3(su)->show port advertise ge.2.1
ge.2.1
-------------------------------------------------
10BASE-T
10BASE-TFD
100BASE-TX
100BASE-TXFD
1000BASE-T
1000BASE-TFD
pause
G3(su)->show port status ge.2.1
Port
--------- ------------ ------- ------- --------- ------- ------------
ge.2.1
G3(su)->set port negotiation ge.2.1 disable
G3(su)->set port advertise ge.2.1 100txfd
G3(su)->set port speed ge.2.1 100
G3(su)->set port duplex ge.2.1 full
G3(su)->show port status ge.2.1
Port
--------- ------------ ------- ------- --------- ------- ------------
ge.2.1
For more information, refer to the commands in this chapter and to your fixed switch hardware
installation documentation.
Configuring Port Link Flap Detection
The link flap detection feature monitors link flapping (that is, when a link goes up and down
rapidly) on a physical port. Link flapping indicates a Layer 1 (physical layer) problem, such as a
faulty cable or GBIC. If link flapping occurs, your Enterasys switch can react by disabling the
affected port and generating a syslog entry and an SNMP trap to notify you of the event.
8-8 Port Configuration
Task
Set the port duplex mode to full.
(Optional) Verify the new settings.
Status Ports Model
-------- ----- ----------
Present 24 G3G170-24
Present 24 G3G-24SFP
capability
no
no
no
yes
no
yes
yes
Alias Oper
(truncated) Status
Down
Alias Oper
(truncated) Status
Down
Command(s)
set port duplex port-string full
show port status port-string
Serial Number
-------------
0011223302
H03611239
advertised remote
no no
no no
no no
no no
no no
yes no
yes no
Admin Speed
Status (bps)
Up N/A
Admin Speed
Status (bps)
Up 100.0M
Hw Version
--------------
BCM56514 REV 1
BCM56512 REV 1
Duplex Type
N/A 1000BASE-SX
Duplex Type
full 100BASE-FX