| Bug ID |
12767
|
| Summary |
Malformed Packet: CDP (forced entry aging)
|
| Product |
Wireshark
|
| Version |
Git
|
| Hardware |
All
|
| OS |
All
|
| Status |
UNCONFIRMED
|
| Severity |
Normal
|
| Priority |
Low
|
| Component |
Dissection engine (libwireshark)
|
| Assignee |
[email protected]
|
| Reporter |
[email protected]
|
Created attachment 14831 [details]
CDP entry flush packet
Build Information:
Version 2.3.0 (v2.3.0rc0-343-gb366d6e from unknown)
--
Dear Wireshark developers,
It seems that Cisco uses CDP packet with capability 0 and Null platform string
to force CDP entry aging on neighboring device during reload. Below is the
debug log on neighboring device during reload:
*Aug 19 20:32:04.434: CDP-PA: Packet received from Router on interface
Ethernet0/2
*Aug 19 20:32:04.434: **Entry found in cache**
*Aug 19 20:32:04.434: CDP-EV: Packet Received from Router with capability = 0
and Platform string = on interface Ethernet0/2
*Aug 19 20:32:05.409: CDP-AD: Aging entry for Router, on interface Ethernet0/2
*Aug 19 20:32:05.409: CDP-EV: Notify registered clients about the entry
deletion from CDP cache for Ethernet0/2
I've convinced that CDP entry aged immediately on neighboring device. The
packet is attached. Thanks in advance!
Garri
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