晕，谁有cisco的cdp的version 2的包分析资料哦？

[spopo]

http://www.cisco.com/univercd/cc/td/doc/product/lan/trsrb/frames.htm#xtocid12 只有version1的分析，cisco的主页是在太庞大整的人头昏眼花的。
version2的cdp包末尾好像没有ip prefix，而是protocol hello和vtp domain什么的，实在让人纳闷，哭啊～～～

[spopo]

我搞清楚了那个protocol hello的是cluster management族群管理，里面有族群ip、子网掩码、物理地址还有好多东东，cisco主页上能找到对应的数据段分析吗？我抓包软件一些地方没分析清楚。

[yanghehong]

V2:

•A reporting mechanism saving time for tracking errors that create costly downtime for the following:

•Unmatching duplex states between devices

•Unmatching (IEEE 802.1Q) native VLAN IDs between connecting ports

•Expanded commands providing detailed output on VLAN Trunking Protocol (VTP) management domain and duplex modes of neighbor devices, CDP-related counters, and VLAN IDs of connecting ports

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增加几个TLV：

Table 1 Type-Length-Value Definitions for Cisco Discovery Protocol v2
TLV Definition
Device-ID TLV
Identifies the device name in the form of a character string.

Address TLV
Contains the network addresses of both receiving and sending devices.

Port-ID TLV
Identifies the port on which a Cisco Discovery Protocol packet is sent.

Capabilities TLV
Identifies the device type, which indicates the functional capability of the device; for example, a switch.

Version TLV
Contains information about the software release that is running on the device.

Platform TLV
Identifies the hardware platform of the device; for example, Cisco 4500.

IP Network Prefix TLV
Contains a list of network prefixes to which the sending device can forward IP packets. A prefix includes the interface protocol and port number; for example, Eth 1/0.

VTP Management Domain TLV
Advertises the system's configured VTP management domain name. Used by network operators to verify VTP domain configuration in adjacent network nodes.

Native VLAN TLV
Indicates, per interface, the assumed VLAN for untagged packets on the interface. Cisco Discovery Protocol learns the native VLAN for an interface.

This field is implemented only for interfaces that support the IEEE 802.1Q protocol.

Full/Half Duplex TLV
Indicates the duplex configuration of the Cisco Discovery Protocol broadcast interface. Used by network operators to diagnose connectivity problems between adjacent network devices.

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http://www.cisco.com/en/US/docs/ios/12_0t/12_0t3/feature/guide/cdpadds.html

-千里

[yanghehong]

不知道楼主在做什么项目。你的抓包软件能分析到什么程度？


-千里

[zhao860216]

[Quote=引用 1 楼 yanghehong 的回复:]
V2:

•A reporting mechanism saving time for tracking errors that create costly downtime for the following:

•Unmatching duplex states between devices

•Unmatching (IEEE 802.1Q) native VLAN IDs between connecting ports

•Expanded commands providing detailed output on VLAN Trunking Protocol (VTP) management domain and duplex modes of neighbor devices, CDP-related counters, and VLAN…
[/Quote]

[spopo]

我其实是要做一个cdp包信息的解析，
我用wireshark抓cdp包，version2的，发现其中在vtp和platform之间有一个cluster management，其中type号刚好就是0x0008，里面有很多信息，但却找不到资料，现在相当的郁闷。
vtp和platform的type分别是0x0009和0x0007，是由ZD-F4-1思科交换机发送的cdp。