Netgear M4300-52G (GSM4352S) - Stackable Managed Switch with 48x1G and 4x10G including 2x10GBASE-T and 2xSFP+ Layer 3 소프트웨어 가이드
Switching Commands
620
M4200 and M4300 Series ProSAFE Managed Switches
Command example:
(NETGEAR Switch) #show interfaces status err-disabled
Interface Errdisable Reason Auto-Recovery Time Left(sec)
---------- ----------------- ------------------
0/1 udld 279
0/2 bpduguard 285
0/3 bpdustorm 291
0/4 keepalive 11
UniDirectional Link Detection Commands
The purpose of the UniDirectional Link Detection (UDLD) feature is to detect and avoid
unidirectional links. A unidirectional link is a forwarding anomaly in a Layer 2 communication
channel in which a bi-directional link stops passing traffic in one direction. Use the UDLD
commands to detect unidirectional links’ physical ports. UDLD must be enabled on both sides
of the link in order to detect a unidirectional link. The UDLD protocol operates by exchanging
packets containing information about neighboring devices.
unidirectional links. A unidirectional link is a forwarding anomaly in a Layer 2 communication
channel in which a bi-directional link stops passing traffic in one direction. Use the UDLD
commands to detect unidirectional links’ physical ports. UDLD must be enabled on both sides
of the link in order to detect a unidirectional link. The UDLD protocol operates by exchanging
packets containing information about neighboring devices.
udld enable (Global Config)
This command enables UDLD globally on the switch.
no udld enable (Global Config)
This command disables udld globally on the switch.
udld message time
This command configures the interval between UDLD probe messages on ports that are in
the advertisement phase. The range is from 7 to 90 seconds.
the advertisement phase. The range is from 7 to 90 seconds.
Default
disable
Format
udld enable
Mode
Global Config
Format
no udld enable
Mode
Global Config
Default
15 seconds
Format
udld message time seconds
Mode
Global Config