Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!lsuc!dave From: dave@lsuc.UUCP (David Sherman) Newsgroups: can.general,news.misc,news.admin Subject: Re: uunet access from Canada Message-ID: <1911@lsuc.UUCP> Date: Tue, 7-Jul-87 05:34:20 EDT Article-I.D.: lsuc.1911 Posted: Tue Jul 7 05:34:20 1987 Date-Received: Wed, 8-Jul-87 06:47:20 EDT References: <954@van-bc.UUCP> <1477@ncc.UUCP> <959@van-bc.UUCP> <1480@ncc.UUCP> <967@van-bc.UUCP> Reply-To: dave@lsuc.UUCP (David Sherman) Distribution: can Organization: Law Society of Upper Canada, Toronto Lines: 34 Summary: what's a backbone supposed to be? Xref: mnetor can.general:468 news.misc:712 news.admin:636 In article <967@van-bc.UUCP> sl@van-bc.UUCP (Stuart Lynne) writes: >In article <1480@ncc.UUCP> lyndon@ncc.UUCP (Lyndon Nerenberg) writes: >>In article <959@van-bc.UUCP>, sl@van-bc.UUCP (Stuart Lynne) writes: >>> >>> This actually happened to us the west coast in February. Alberta lost their >>> ihpn4 link. Feed went from a pretty consistent 1MB of compressed feed per >>> day to a handful of articles filtering in from back east. Pretty boring 3 >>> weeks! >> >>Which is rather strange given that ubc-vision is a backbone site. > >Yes, but almost all news comes in from Alberta, not from uw-beaver. Isn't a backbone supposed to have redundant feeds to deal with ths problem? In theory, if uw-beaver!ubc-vision is a backbone link, then any news which doesn't come through the other link should find its way in through that link. I know that in some cases this rule is honoured in the breach. At mnetor, for example, they feed everything to seismo except things which have already been to clyde and some other sites; which avoids sending things back to the US that have already been there (and arrived at mnetor through the backup clyde!watmath!water!utgpu!utzoo!mnetor). This violates the rule in that it assumes that anything that has been to clyde will otherwise make it to seismo on its own. Given that cost of Datapac/U.S. gatewaying, I don't blame the mnetor sysadmins for this; I'm just curious as to how much of this happens on other feeds. David Sherman The Law Society of Upper Canada Toronto -- { seismo!mnetor cbosgd!utgpu watmath decvax!utcsri ihnp4!utzoo } !lsuc!dave