Traceroute Mac - Cisco 3020 - Catalyst Blade Switch Command Reference Manual
Cisco catalyst blade switch 3020 for hp command reference, rel. 12.2(25)sef1
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Also See for 3020 - Cisco Catalyst Blade Switch:
- Configuration manual (712 pages) ,
- Release note (54 pages) ,
- Getting started manual (37 pages)
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traceroute mac
traceroute mac
Use the traceroute mac privileged EXEC command to display the Layer 2 path taken by the packets
from the specified source MAC address to the specified destination MAC address.
Syntax Description
interface interface-id
source-mac-address
destination-mac-address
vlan vlan-id
detail
Defaults
There is no default.
Command Modes
Privileged EXEC
Command History
Release
12.2(25)SEF
Usage Guidelines
For Layer 2 traceroute to function properly, Cisco Discovery Protocol (CDP) must be enabled on all the
switches in the network. Do not disable CDP.
When the switch detects a device in the Layer 2 path that does not support Layer 2 traceroute, the switch
continues to send Layer 2 trace queries and lets them time out.
The maximum number of hops identified in the path is ten.
Layer 2 traceroute supports only unicast traffic. If you specify a multicast source or destination MAC
address, the physical path is not identified, and an error message appears.
The traceroute mac command output shows the Layer 2 path when the specified source and destination
addresses belong to the same VLAN. If you specify source and destination addresses that belong to
different VLANs, the Layer 2 path is not identified, and an error message appears.
If the source or destination MAC address belongs to multiple VLANs, you must specify the VLAN to
which both the source and destination MAC addresses belong. If the VLAN is not specified, the path is
not identified, and an error message appears.
The Layer 2 traceroute feature is not supported when multiple devices are attached to one port through
hubs (for example, multiple CDP neighbors are detected on a port). When more than one CDP neighbor
is detected on a port, the Layer 2 path is not identified, and an error message appears.
This feature is not supported in Token Ring VLANs.
Cisco Catalyst Blade Switch for HP Command Reference
2-520
traceroute mac [interface interface-id] {source-mac-address} [interface interface-id]
{destination-mac-address} [vlan vlan-id] [detail]
(Optional) Specify an interface on the source or destination switch.
Specify the MAC address of the source switch in hexadecimal format.
Specify the MAC address of the destination switch in hexadecimal format.
(Optional) Specify the VLAN on which to trace the Layer 2 path that the
packets take from the source switch to the destination switch. Valid VLAN
IDs are 1 to 4094.
(Optional) Specify that detailed information appears.
Modification
This command was introduced.
Chapter 2 Cisco Catalyst Blade Switch 3020 for HP Cisco IOS Commands
OL-8916-01
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