Could be this..? http://www.juniper.net/techpubs/en_US/junos11.2/topics/reference/configurati... "unrecognized transitive attributes" depend on whatever code version you are running... What's more important is how the unrecoginized attribute is handled. Ideally you accept and pass the route and log it. The problem is with devices that aren't so graceful.. dropping sessions and wreaking havoc: http://www.cisco.com/warp/public/707/cisco-sa-20100827-bgp.shtml --Heather -----Original Message----- From: Aftab Siddiqui [mailto:aftab.siddiqui@gmail.com] Sent: Saturday, September 10, 2011 6:49 PM To: Richard Barnes Cc: Jonas Frey (Probe Networks); nanog@nanog.org Subject: Re: Saudi Telecom sending route with invalid attributes 212.118.142.0/24 with in the span of couple of hours this prefix was originated from 3 ASN i.e. AS3561 (Savvis), AS8866 (BTC) and AS25019 (STC original custodians). As per the STC it was orginated by one of their customer having Juniper router. but I still don't understand why/how they are adv this prefix with unrecog transitive attributes. Can any one suggest. Regards, Aftab A. Siddiqui On Sun, Sep 11, 2011 at 3:26 AM, Richard Barnes <richard.barnes@gmail.com>wrote:
Looks like the RIS collectors are seeing it originating mostly from STC and KACST ASNs: <http://stat.ripe.net/212.118.142.0/24>
Some of the "show ip bgp" reports on that screen are also showing AS8866 "BTC-AS Bulgarian Telecommunication Company". Not sure what's up with that.
--Richard
On Sat, Sep 10, 2011 at 2:01 PM, Christopher Morrow <morrowc.lists@gmail.com> wrote:
On Fri, Sep 9, 2011 at 9:26 PM, Kyle Duren <pixitha.kyle@gmail.com> wrote:
Is this announcement still showing up this way (no easy way to check myself).
ripe ris?
-Kyle
On Thu, Sep 8, 2011 at 4:20 PM, Clay Haynes <chaynes@centracomm.net> wrote:
On Thu, Sep 8, 2011 at 7:11 PM, Jonas Frey (Probe Networks) < jf@probe-networks.de> wrote:
Hello,
anyone else getting a route for 212.118.142.0/24 with invalid attributes? Seems this is (again) causing problems with some (older) routers/software.
Announcement bits (4): 0-KRT 3-KRT 5-Resolve tree 1 6-Resolve tree 2 AS path: 6453 39386 25019 I Unrecognized Attributes: 39 bytes AS path: Attr flags e0 code 80: 00 00 fd 88 40 01 01 02 40 02 04 02 01 5b a0 c0 11 04 02 01 fc da 80 04 04 00 00 00 01 40 05 04 00 00 00 64 Accepted Multipath
-Jonas
Yup! We're seeing the same thing too, and we're filtering it out. Originating AS is 25019
-Clay