Cisco Catalyst 3750-X Command Reference

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Catalyst 3750-X and 3560-X Switch Command Reference
OL-29704-01
Chapter 2 Catalyst 3750-X and 3560-X Switch Cisco IOS Commands
show udld
Table 2-51 show udld Field Descriptions
Field Description
Interface The interface on the local device configured for UDLD.
Port enable administrative
configuration setting
How UDLD is configured on the port. If UDLD is enabled or
disabled, the port enable configuration setting is the same as the
operational enable state. Otherwise, the enable operational setting
depends on the global enable setting.
Port enable operational state Operational state that shows whether UDLD is actually running on
this port.
Current bidirectional state The bidirectional state of the link. An unknown state appears if the
link is down or if it is connected to an UDLD-incapable device. A
bidirectional state appears if the link is a normal two-way connection
to a UDLD-capable device. All other values mean miswiring.
Current operational state The current phase of the UDLD state machine. For a normal
bidirectional link, the state machine is most often in the
Advertisement phase.
Message interval How often advertisement messages are sent from the local device.
Measured in seconds.
Time out interval The time period, in seconds, that UDLD waits for echoes from a
neighbor device during the detection window.
Entry 1 Information from the first cache entry, which contains a copy of echo
information received from the neighbor.
Expiration time The amount of time in seconds remaining before this cache entry is
aged out.
Device ID The neighbor device identification.
Current neighbor state The neighbor’s current state. If both the local and neighbor devices
are running UDLD normally, the neighbor state and local state
should be bidirectional. If the link is down or the neighbor is not
UDLD-capable, no cache entries appear.
Device name The device name or the system serial number of the neighbor. The
system serial number appears if the device name is not set or is set to
the default (Switch).
Port ID The neighbor port ID enabled for UDLD.
Neighbor echo 1 device The device name of the neighbors’ neighbor from which the echo
originated.
Neighbor echo 1 port The port number ID of the neighbor from which the echo originated.
Message interval The rate, in seconds, at which the neighbor is sending advertisement
messages.
CDP device name The CDP device name or the system serial number. The system serial
number appears if the device name is not set or is set to the default
(Switch).

Cisco Catalyst 3750-X Specifications

General

Switching Capacity	160 Gbps
Stacking Bandwidth	64 Gbps
Max Stacking Units	9
Layer Support	Layer 2 and Layer 3
Form Factor	Rack-mountable
DRAM	256 MB
Flash Memory	64 MB
Model	Cisco Catalyst 3750-X Series
Ports	24 or 48 10/100/1000 Ethernet ports
Uplink Interfaces	4 SFP or 2 SFP+
Features	StackWise Plus, EnergyWise
Image	IP Base or IP Services
Operating Temperature	0 to 40°C
Operating Humidity	10 to 85% noncondensing