Packet Captures
Auto-RP.cap (726 bytes)
| Packets: 9 | Duration: 239s | Downloads: 3191 |
Routers 2 and 3 have been configured as candidate RPs, and multicast RP announcements to 239.0.1.39. 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 (3.3.3.3). R1 multicasts the RP mapping to 224.0.1.40. The capture is from the R1-R2 link.
802.1X.cap (498 bytes)
| Packets: 7 | Duration: 19s | Downloads: 4937 |
A wired client authenticates to its switch using 802.1x/EAP and MD5 challenge authentication.
- Categories: Authentication
- Protocols: EAPoL, Ethernet
802.1w_rapid_STP.cap (2.3 KB)
| Packets: 30 | Duration: 56s | Downloads: 4847 |
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: 5670 |
IEEE 802.1D Spanning Tree Protocol (STP) advertisements sent every two seconds.
3725_CDP.cap (390 bytes)
| Packets: 1 | Duration: n/a | Downloads: 3182 |
Cisco Discovery Protocol (CDP) from FastEthernet0/0 of a Cisco 3725 router.
- Categories: Cisco-proprietary
- Protocols: CDP, Ethernet, LLC
3560_CDP.cap (1.2 KB)
| Packets: 3 | Duration: 120s | Downloads: 3595 |
Cisco Discovery Protocol (CDP) advertisements from a Catalyst 3560. Note how much information is offered to a potential attacker.
- Categories: Cisco-proprietary
- Protocols: CDP, Ethernet, LLC