Wireshark-bugs: [Wireshark-bugs] [Bug 12605] New: Wireshark don't decode BGP capability codes 2
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Sun, 10 Jul 2016 07:16:06 +0000
Bug ID 12605
Summary Wireshark don't decode BGP capability codes 2 and 128 differently
Product Wireshark
Version Git
Hardware All
OS All
Status UNCONFIRMED
Severity Minor
Priority Low
Component Dissection engine (libwireshark)
Assignee bugzilla-admin@wireshark.org
Reporter g.djavadyan@gmail.com 

Created attachment 14712 [details]
BGP Open packet

Build Information:
Version 2.1.1-git (v2.1.1rc0-430-g5758aa5 from unknown)
--
Dear Wireshark developers,

Currently, Wireshark don't decode BGP capability codes 2 and 128 differently,
although code 2 is standardized Route Refresh Capability for BGP-4 and 128 is
vendor-specific one [1]. For example, Cisco routers interpret the capabilities
as ROUTE-REFRESH capability(new) and ROUTE-REFRESH capability(old) accordingly.
Below is the debug message for a received capabilities:

BGP: 10.255.255.2 passive rcvd OPEN w/ optional parameter type 2 (Capability)
len 2
BGP: 10.255.255.2 passive OPEN has CAPABILITY code: 2, length 0
BGP: 10.255.255.2 passive OPEN has ROUTE-REFRESH capability(new) for all
address-families
BGP: 10.255.255.2 passive rcvd OPEN w/ optional parameter type 2 (Capability)
len 2
BGP: 10.255.255.2 passive OPEN has CAPABILITY code: 128, length 0
BGP: 10.255.255.2 passive OPEN has ROUTE-REFRESH capability(old) for all
address-families

The BGP Open packet is attached.

[1] http://www.iana.org/assignments/capability-codes/capability-codes.xhtml

Thanks!
Garri

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