Cisco WS-C3560E-48PD-SF Command Reference - Page 689
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Chapter 2 Catalyst 3560 Switch Cisco IOS Commands traceroute mac Examples 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. This example shows how to display the Layer 2 path by specifying the source and destination MAC addresses: Switch# traceroute mac 0000.0201.0601 0000.0201.0201 Source 0000.0201.0601 found on con6[WS-C3560-12T] (2.2.6.6) con6 (2.2.6.6) :Gi0/1 => Gi0/3 con5 (2.2.5.5 ) : Gi0/3 => Gi0/1 con1 (2.2.1.1 ) : Gi0/1 => Gi0/2 con2 (2.2.2.2 ) : Gi0/2 => Gi0/1 Destination 0000.0201.0201 found on con2[WS-C3550-24] (2.2.2.2) Layer 2 trace completed This example shows how to display the Layer 2 path by using the detail keyword: Switch# traceroute mac 0000.0201.0601 0000.0201.0201 detail Source 0000.0201.0601 found on con6[WS-C3560-12T] (2.2.6.6) con6 / WS-C3560-12T / 2.2.6.6 : Gi0/2 [auto, auto] => Gi0/3 [auto, auto] con5 / WS-C2950G-24-EI / 2.2.5.5 : Fa0/3 [auto, auto] => Gi0/1 [auto, auto] con1 / WS-C3550-12G / 2.2.1.1 : Gi0/1 [auto, auto] => Gi0/2 [auto, auto] con2 / WS-C3550-24 / 2.2.2.2 : Gi0/2 [auto, auto] => Fa0/1 [auto, auto] Destination 0000.0201.0201 found on con2[WS-C3550-24] (2.2.2.2) Layer 2 trace completed. This example shows how to display the Layer 2 path by specifying the interfaces on the source and destination switches: Switch# traceroute mac interface fastethernet0/1 0000.0201.0601 interface fastethernet0/3 0000.0201.0201 Source 0000.0201.0601 found on con6[WS-C3560-12T] (2.2.6.6) con6 (2.2.6.6) :Gi0/1 => Gi0/3 con5 (2.2.5.5 ) : Gi0/3 => Gi0/1 con1 (2.2.1.1 ) : Gi0/1 => Gi0/2 con2 (2.2.2.2 ) : Gi0/2 => Gi0/1 Destination 0000.0201.0201 found on con2[WS-C3550-24] (2.2.2.2) Layer 2 trace completed This example shows the Layer 2 path when the switch is not connected to the source switch: Switch# traceroute mac 0000.0201.0501 0000.0201.0201 detail Source not directly connected, tracing source ..... Source 0000.0201.0501 found on con5[WS-C3560-12T] (2.2.5.5) con5 / WS-C3560-12T / 2.2.5.5 : Gi0/1 [auto, auto] => Gi0/3 [auto, auto] con1 / WS-C3550-12G / 2.2.1.1 : Gi0/1 [auto, auto] => Gi0/2 [auto, auto] con2 / WS-C3550-24 / 2.2.2.2 : Gi0/2 [auto, auto] => Fa0/1 [auto, auto] Destination 0000.0201.0201 found on con2[WS-C3550-24] (2.2.2.2) Layer 2 trace completed. 78-16405-05 Catalyst 3560 Switch Command Reference 2-657