Skip to content

Instantly share code, notes, and snippets.

@ngschmidt
Created April 16, 2022 23:50
Show Gist options
  • Save ngschmidt/c6c6cc2d52f6802d7ebe0638eb6acd40 to your computer and use it in GitHub Desktop.
Save ngschmidt/c6c6cc2d52f6802d7ebe0638eb6acd40 to your computer and use it in GitHub Desktop.
No. Time Source Destination Protocol Length Info
1 0.000000 Routerbo_13:ea:0e Spanning-tree-(for-bridges)_00 STP 60 RST. Root = 57344/0/2c:c8:1b:13:ea:0d Cost = 0 Port = 0x8001
Frame 1: 60 bytes on wire (480 bits), 60 bytes captured (480 bits)
Encapsulation type: Ethernet (1)
Arrival Time: Apr 10, 2022 08:17:09.270737000 Alaskan Daylight Time
[Time shift for this packet: 0.000000000 seconds]
Epoch Time: 1649607429.270737000 seconds
[Time delta from previous captured frame: 0.000000000 seconds]
[Time delta from previous displayed frame: 0.000000000 seconds]
[Time since reference or first frame: 0.000000000 seconds]
Frame Number: 1
Frame Length: 60 bytes (480 bits)
Capture Length: 60 bytes (480 bits)
[Frame is marked: False]
[Frame is ignored: False]
[Protocols in frame: eth:llc:stp]
[Coloring Rule Name: Broadcast]
[Coloring Rule String: eth[0] & 1]
IEEE 802.3 Ethernet
Destination: Spanning-tree-(for-bridges)_00 (01:80:c2:00:00:00)
Address: Spanning-tree-(for-bridges)_00 (01:80:c2:00:00:00)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...1 .... .... .... .... = IG bit: Group address (multicast/broadcast)
Source: Routerbo_13:ea:0e (2c:c8:1b:13:ea:0e)
Address: Routerbo_13:ea:0e (2c:c8:1b:13:ea:0e)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
Length: 39
Padding: 00000000000000
Logical-Link Control
DSAP: Spanning Tree BPDU (0x42)
0100 001. = SAP: Spanning Tree BPDU
.... ...0 = IG Bit: Individual
SSAP: Spanning Tree BPDU (0x42)
0100 001. = SAP: Spanning Tree BPDU
.... ...0 = CR Bit: Command
Control field: U, func=UI (0x03)
000. 00.. = Command: Unnumbered Information (0x00)
.... ..11 = Frame type: Unnumbered frame (0x3)
Spanning Tree Protocol
Protocol Identifier: Spanning Tree Protocol (0x0000)
Protocol Version Identifier: Rapid Spanning Tree (2)
BPDU Type: Rapid/Multiple Spanning Tree (0x02)
BPDU flags: 0x3c, Forwarding, Learning, Port Role: Designated
0... .... = Topology Change Acknowledgment: No
.0.. .... = Agreement: No
..1. .... = Forwarding: Yes
...1 .... = Learning: Yes
.... 11.. = Port Role: Designated (3)
.... ..0. = Proposal: No
.... ...0 = Topology Change: No
Root Identifier: 57344 / 0 / 2c:c8:1b:13:ea:0d
Root Bridge Priority: 57344
Root Bridge System ID Extension: 0
Root Bridge System ID: Routerbo_13:ea:0d (2c:c8:1b:13:ea:0d)
Root Path Cost: 0
Bridge Identifier: 57344 / 0 / 2c:c8:1b:13:ea:0d
Bridge Priority: 57344
Bridge System ID Extension: 0
Bridge System ID: Routerbo_13:ea:0d (2c:c8:1b:13:ea:0d)
Port identifier: 0x8001
Message Age: 0
Max Age: 20
Hello Time: 2
Forward Delay: 15
Version 1 Length: 0
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment