:-> "Alexander" == Alexander Koch <efraim@clues.de> writes: > Hiya, > I was wondering if someone had done any or some research on > this before... basically I am not sure with all the many > implementations of BGP and all the vendors if and what those > will do when they see a metric of 0 and no metric. I am not > an expert knowing the actual protocol's messages exchanged, > but I see some routes with nothing in the metric field on > the various show commands, and some have explicit '0' metric. > I do not trust all the BGP implementations around, and we > consider changing the default outbound, with MEDs of course > still available on request. Cisco has a knob for this: http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123tcr/123ti... default is treating missing med as 0, which tends to surprise peers/customers who want to send med only on a few routes (i.e., if you want to set a med on a route, always set it on all your bgp sessions, because you can't tell if your neighbor has set "missing-as-worst" or not). Pf > Alexander -- ------------------------------------------------------------------------------- Pierfrancesco Caci | Network & System Administrator - INOC-DBA: 6762*PFC p.caci@seabone.net | Telecom Italia Sparkle - http://etabeta.noc.seabone.net/ Linux paperino 2.4.20 #1 Mon Dec 2 17:02:14 CET 2002 i686 GNU/Linux