3com 5500-ei pwr Reference Guide
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Parameters
by-mac: Specifies to trace a device through the specified destination MAC address.
mac-address: MAC address of the device to be traced.
vlan vlan-id: Specifies to trace a device in the specified VLAN. vlan-id ranges from 1 to 4094.
by-ip: Specifies to trace a device through the specified destination IP address.
ip-address: IP address of the device to be traced.
nondp: Specifies not to check the NDP neighbor information.
Description
Use the tracemac command to trace a device in a cluster through the specified destination MAC
address or IP address, and to display the path from the current device to the destination device.
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When using the destination IP address to trace a device, the switch looks up the ARP entry
corresponding to the IP address, and then looks up the MAC address entry according to the ARP
entry.
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If the queried IP address has a corresponding ARP entry, but the corresponding MAC address of
the IP address does not exist in the MAC address table, the trace of the device fails.
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To trace a specific device using the tracemac command, make sure that all the devices passed
support the tracemac function.
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To trace a specific device in a management VLAN using the tracemac command, make sure that
all the devices passed are within the same management VLAN as the device to be traced.
Examples
# Trace the device that belongs to VLAN 1 through its MAC address 00e0-f032-0005.
<aaa_0.Sysname> tracemac by-mac 000f-e232-0005 vlan 1
Tracing MAC address 000f-e232-0005 in vlan 1
1 000f-e232-0001 3Com01 Ethernet1/0/2
2 000f-e232-0002 3Com02 Ethernet1/0/7
3 000f-e232-0003 3Com03 Ethernet1/0/4
4 000f-e232-0005 3Com05 Local
# Trace the device that belongs to VLAN 1 through its IP address 192.168.1.5.
<aaa_0.Sysname> tracemac by-ip 192.168.1.5
Tracing MAC address 000f-e232-0005 in vlan 1
1 000f-e232-0001 3Com01 Ethernet1/0/2
2 000f-e232-0002 3Com02 Ethernet1/0/7
3 000f-e232-0003 3Com03 Ethernet1/0/4
4 000f-e232-0005 3Com05 Local