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