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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: ISP Policies
RG> Date: Fri, 10 Sep 2004 11:36:58 +0530 RG> From: Rohit Gupta RG> On a related note : Do ISPs ever tweak around with Local RG> Prefs and weights so as to select BGP paths with greater AS RG> PATH length? Definitely. Case in point: I set up a network a few years ago that included a choice between X 1 Y Z 1 and the latter, longer AS_PATH was the lower-latency way to reach most of AS1. A side bonus was that traffic distribution between their upstreams was better. Note that, as others have mentioned, such tweaks are more common on smaller providers that have less splay. RG> Would it ever make sense for a provider to chose a longer AS RG> PATH length BGP route against a shorter AS PATH length route? Yes. See above. Not all AS_PATH hops are created equal, just as not all IP hops are created equal. Eddy -- Everquick Internet - http://www.everquick.net/ A division of Brotsman & Dreger, Inc. - http://www.brotsman.com/ Bandwidth, consulting, e-commerce, hosting, and network building Phone: +1 785 865 5885 Lawrence and [inter]national Phone: +1 316 794 8922 Wichita _________________________________________________________________ DO NOT send mail to the following addresses: [email protected] -*- [email protected] -*- [email protected] Sending mail to spambait addresses is a great way to get blocked.
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