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802.1w_rapid_STP.cap (2.2 KB)

Packets: 30 Avg Size: 60 bytes Duration: 56.2 sec
Data Rate: 0.25 Kbps Added: 10 Aug 2008 Downloads: 515

Rapid Spanning Tree Protocol BPDUs are received from a Catalyst switch after connecting to a port not configured for PortFast. The port transitions through the blocking and learning states before issuing a topology change notification (packet #30) and transitioning to the forwarding state.

UDLD.cap (3.3 KB)

Packets: 29 Avg Size: 101 bytes Duration: 93.0 sec
Data Rate: 0.25 Kbps Added: 20 Jun 2008 Downloads: 257

Unidirectional Link Detection (UDLD) is used to monitor the status of a link between a Catalyst 2960 and a Catalyst 3560. Note that echos are initially sent at very small intervals, gradually throttling back to the configured interval of 15 seconds.

ICMP_across_dot1q.cap (1.7 KB)

Packets: 15 Avg Size: 96 bytes Duration: 35.0 sec
Data Rate: 0.32 Kbps Added: 20 Jun 2008 Downloads: 474

A ping issued from 192.168.123.2 to 192.168.123.1 is encapsulated with an IEEE 802.1Q header, placing it in VLAN 123.

802.1D_spanning_tree.cap (1.1 KB)

Packets: 14 Avg Size: 60 bytes Duration: 26.1 sec
Data Rate: 0.25 Kbps Added: 18 Jun 2008 Downloads: 336

IEEE 802.1D Spanning Tree Protocol (STP) advertisements sent every two seconds.

DTP.cap (934 bytes)

Packets: 10 Avg Size: 75 bytes Duration: 120.0 sec
Data Rate: 0.05 Kbps Added: 18 Jun 2008 Downloads: 367

Dynamic Trunking Protocol (DTP) emanated from a Catalyst 3560 every 60 seconds, both with and without ISL encapsulation.

Viewing 1 - 5 of 5 captures