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Packet Captures

ICMP_over_L2TPv3_Pseudowire.pcap.cap 5.3 KB

Submitted Sep 4, 2010 by onefst250r

ICMP pings from a CE to a second CE via a L2TPv3 pseudowire.

Ethernet IP L2TP LOOP OSPF

Packets: 38 Duration: 30s Downloads: 8662

rpvstp-trunk-native-vid5.pcap.cap 1.8 KB

Submitted Dec 16, 2009 by einval

Rapid per-VLAN spanning tree capture of a trunk port, configured with native VLAN 5, VLAN 1 is also active over the trunk.

Capture shows that 3 BPDUs are sent out, one for classic STP (Frame 4, for example), one for the native VLAN 5 (not tagged - Frame 5) and one for each other active VLAN (tagged - Frame 3).

The PVST BPDUs contain the VLAN ID at the end of the frame (01 and 05, respectively).

DTP Ethernet LLC LOOP STP VLAN VTP

Packets: 22 Duration: 11s Downloads: 8748

rpvstp-trunk-native-vid1.pcap.cap 6.4 KB

Submitted Dec 16, 2009 by einval

Rapid per-VLAN spanning tree capture of a trunk port, configured with native VLAN 1 (default), VLAN 5 is also active over the trunk.

Capture shows that 3 BPDUs are sent out, one for classic STP (Frame 4, for example), one for the native VLAN (not tagged - Frame 3) and one for each other active VLAN (tagged - Frame 5).

The PVST BPDUs contain the VLAN ID at the end of the frame (01 and 05, respectively).

DTP Ethernet LLC LOOP STP VLAN VTP

Packets: 81 Duration: 45s Downloads: 8071

rpvstp-access.pcap.cap 3.7 KB

Submitted Dec 16, 2009 by einval

Rapid per-VLAN spanning tree capture of an access port (without portfast), configured in VLAN 5.

DNS Ethernet IP LLC LOOP STP UDP

Packets: 49 Duration: 77s Downloads: 6060

EoMPLS.cap 7.0 KB

Submitted Oct 12, 2009 by pierky

Routers at 1.1.2.1 and 1.1.2.2 are PEs in a MPLS cloud. LDP starts at packet 8 and they build up a pseudo-wire VC (last FEC in packets 11 and 13). At packet 15 we already have STP running between CE1 and CE2 (two routers with ESW), encapsulated in 2 MPLS headers. All the ethernet stuff follows: CDP, ARP, ICMP between two hosts on the same subnet.

Ethernet IP LOOP MPLS TCP UDP

Packets: 56 Duration: 32s Downloads: 7285

Ethernet_keepalives.cap 1012 bytes

Submitted Sep 14, 2009

Loopback keepalives transmitted by an Ethernet interface.

Ethernet LOOP

Packets: 13 Duration: 120s Downloads: 3469