BGP_notification.cap (764 bytes)
|Packets: 9||Duration: n/a||Downloads: 3921|
R1 has been misconfigured to expect R2 to reside in AS 65100. R2 attempts to peer with R1 advertising itself correctly in AS 65200. R1 issues a NOTIFICATION in packet #5 citing a "bad peer AS" error and terminates the TCP connection.
BGP_hard_reset.cap (3.2 KB)
|Packets: 32||Duration: 208s||Downloads: 3814|
A hard reset (clear ip bgp) is performed on R1 for its adjacency with R2. Packet #7 shows R1 sending a packet with the TCP FIN flag set, indicating the connection is to be torn down. The TCP connection is then reestablished and UPDATEs are retransmitted.
BGP_AS_set.cap (1.6 KB)
|Packets: 18||Duration: 1s||Downloads: 4543|
Packet #15 includes a BGP update containing both an AS sequence and an AS set in its AS path attribute.
Auto-RP.cap (726 bytes)
|Packets: 9||Duration: 239s||Downloads: 3902|
Routers 2 and 3 have been configured as candidate RPs, and multicast RP announcements to 188.8.131.52. Router 1 is the RP. R1 sees the candidate RP announcements from R2 and R3, and designates R3 the RP because it has a higher IP address (184.108.40.206). R1 multicasts the RP mapping to 220.127.116.11. The capture is from the R1-R2 link.
802.1X.cap (498 bytes)
|Packets: 7||Duration: 19s||Downloads: 6433|
A wired client authenticates to its switch using 802.1x/EAP and MD5 challenge authentication.
802.1w_rapid_STP.cap (2.3 KB)
|Packets: 30||Duration: 56s||Downloads: 6338|
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.
802.1D_spanning_tree.cap (1.1 KB)
|Packets: 14||Duration: 26s||Downloads: 7707|
IEEE 802.1D Spanning Tree Protocol (STP) advertisements sent every two seconds.
3725_CDP.cap (390 bytes)
|Packets: 1||Duration: n/a||Downloads: 3898|
Cisco Discovery Protocol (CDP) from FastEthernet0/0 of a Cisco 3725 router.