Hex Packet Decoder

Cisco_b4:e4:66 → PVST+ STP Conf. Root 16384/0/00:e0:fe:69:9b:10 Cost 4 Port 0x8217

0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
01	00	0C	CC	CC	CD	00	50	3E	B4	E4	66	81	00	00	11
00	32	AA	AA	03	00	00	0C	01	0B	00	00	00	00	00	40
00	00	E0	FE	69	9B	10	00	00	00	04	80	00	00	10	2F
17	4E	10	82	17	01	00	14	00	02	00	0F	00	00	00	00
00	02	00	11

4 protocols in packet:

Ethernet

VLAN

LLC

STP

Frame 1: 68 bytes on wire (544 bits)
- Section number: 1
- Interface id: 0 (Interface, hpd0)
  - Interface name: Interface, hpd0
- Encapsulation type: Ethernet (1)
- Arrival Time: Jan 17, 2024 15:01:27.000001000 CET
- Time shift for this packet: 0.000000000 seconds
- Epoch Time: 1705500087.000001000 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: 68 bytes (544 bits)
- Capture Length: 68 bytes (544 bits)
- Frame is marked: False
- Frame is ignored: False
- Protocols in frame: eth:ethertype:vlan:llc:stp
Ethernet II
- Destination: PVST+ (01:00:0c:cc:cc:cd)
  - Address: PVST+ (01:00:0c:cc:cc:cd)
  - .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
  - .... ...1 .... .... .... .... = IG bit: Group address (multicast/broadcast)
- Source: Cisco_b4:e4:66 (00:50:3e:b4:e4:66)
  - Address: Cisco_b4:e4:66 (00:50:3e:b4:e4:66)
  - .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
  - .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
- Type: 802.1Q Virtual LAN (0x8100)
802.1Q Virtual LAN
- 000. .... .... .... = Priority: Best Effort (default) (0)
- ...0 .... .... .... = DEI: Ineligible
- .... 0000 0001 0001 = ID: 17
- Length: 50
Logical-Link Control
- DSAP: SNAP (0xaa)
  - 1010 101. = SAP: SNAP
  - .... ...0 = IG Bit: Individual
- SSAP: SNAP (0xaa)
  - 1010 101. = SAP: SNAP
  - .... ...0 = CR Bit: Command
- Control field: U, func=UI (0x03)
  - 000. 00.. = Command: Unnumbered Information (0x00)
  - .... ..11 = Frame type: Unnumbered frame (0x3)
- Organization Code: 00:00:0c (Cisco Systems, Inc)
- PID: PVSTP+ (0x010b)
Spanning Tree Protocol
- Protocol Identifier: Spanning Tree Protocol (0x0000)
- Protocol Version Identifier: Spanning Tree (0)
- BPDU Type: Configuration (0x00)
- BPDU flags: 0x00
  - 0... .... = Topology Change Acknowledgment: No
  - .... ...0 = Topology Change: No
- Root Identifier: 16384 / 0 / 00:e0:fe:69:9b:10
  - Root Bridge Priority: 16384
  - Root Bridge System ID Extension: 0
  - Root Bridge System ID: Cisco_69:9b:10 (00:e0:fe:69:9b:10)
- Root Path Cost: 4
- Bridge Identifier: 32768 / 0 / 00:10:2f:17:4e:10
  - Bridge Priority: 32768
  - Bridge System ID Extension: 0
  - Bridge System ID: CiscoSys_17:4e:10 (00:10:2f:17:4e:10)
- Port identifier: 0x8217
- Message Age: 1
- Max Age: 20
- Hello Time: 2
- Forward Delay: 15
- Originating VLAN (PVID): 17
  - Type: Originating VLAN (0x0000)
  - Length: 2
  - Originating VLAN: 17

HPD v3.9 by Salim Gasmi. This site is powered by Wireshark. You can also check my other tools.
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0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
01	00	0C	CC	CC	CD	00	50	3E	B4	E4	66	81	00	00	11
00	32	AA	AA	03	00	00	0C	01	0B	00	00	00	00	00	40
00	00	E0	FE	69	9B	10	00	00	00	04	80	00	00	10	2F
17	4E	10	82	17	01	00	14	00	02	00	0F	00	00	00	00
00	02	00	11

0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
01	00	0C	CC	CC	CD	00	50	3E	B4	E4	66	81	00	00	11
00	32	AA	AA	03	00	00	0C	01	0B	00	00	00	00	00	40
00	00	E0	FE	69	9B	10	00	00	00	04	80	00	00	10	2F
17	4E	10	82	17	01	00	14	00	02	00	0F	00	00	00	00
00	02	00	11

Hex Packet Decoder - 8,468,269 packets decoded.

0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
01	00	0C	CC	CC	CD	00	50	3E	B4	E4	66	81	00	00	11
00	32	AA	AA	03	00	00	0C	01	0B	00	00	00	00	00	40
00	00	E0	FE	69	9B	10	00	00	00	04	80	00	00	10	2F
17	4E	10	82	17	01	00	14	00	02	00	0F	00	00	00	00
00	02	00	11