RSTP RST BPDU(2.Network Packet Format)
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RST BPDU

BPDU Type,
1)0x02,RST/MST Config BPDU(注意与 STP Config BPUD 对比,STP_Config_BPDU.BPDU_Type=0x00)
Flags,原始 STP 的 BPDU Flags 仅使用第一位(TC)和第八位(TCA),但是在 RSTP 中得到扩充。
1)Agreement、Proposal
2)Forwarding / Learning:
3)Port Role:
RST CFG BPDU
Frame 1859: 60 bytes on wire (480 bits), 60 bytes captured (480 bits) on interface -, id 0
IEEE 802.3 Ethernet
Logical-Link Control
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: 0x7c, Agreement, Forwarding, Learning, Port Role: Designated
0... .... = Topology Change Acknowledgment: No
.1.. .... = Agreement: Yes
..1. .... = Forwarding: Yes
...1 .... = Learning: Yes
.... 11.. = Port Role: Designated (3)
.... ..0. = Proposal: No
.... ...0 = Topology Change: No
Root Identifier: 4096 / 0 / 4c:1f:cc:55:44:dc
Root Bridge Priority: 4096
Root Bridge System ID Extension: 0
Root Bridge System ID: HuaweiTe_55:44:dc (4c:1f:cc:55:44:dc)
Root Path Cost: 0
Bridge Identifier: 4096 / 0 / 4c:1f:cc:55:44:dc
Bridge Priority: 4096
Bridge System ID Extension: 0
Bridge System ID: HuaweiTe_55:44:dc (4c:1f:cc:55:44:dc)
Port identifier: 0x8001
Message Age: 0
Max Age: 20
Hello Time: 2
Forward Delay: 15
Version 1 Length: 0
The post 「RSTP」- 2.Network Packet Format appeared first on K4NZ BLOG.
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