Date: Fri, 25 Jul 1997 21:44:26 +0100 (BST) From: Jim Dixon <jdd@vbc.net> To: Stefan Molnar <stefan@exis.net> Cc: Ulf Zimmermann <ulf@Alameda.net>, Francis Yeung <fyeung@fyeung8.netific.com>, steve@visint.co.uk, rls@mail.id.net, freebsd-isp@FreeBSD.ORG Subject: Re: FreeBSD Router Message-ID: <Pine.BSI.3.91.970725211623.14704A-100000@avon-gw.uk1.vbc.net> In-Reply-To: <Pine.LNX.3.95.970725112551.19230B-100000@sailfish.exis.net>
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On Fri, 25 Jul 1997, Stefan Molnar wrote: > > > If 32MB is not enough to hold a full routing table, I wonder - > > > how much memory do most routers e.g. cisco 2501, cisco 7500, Ascend pipeline > > > etc have ? Are those routes ever aged ? We had a Cisco 2501 holding a full set of routes until six months or so ago; it couldn't cope when we went over 40K routes or so. Gated is quite a bit less efficient than the Cisco in storing routes, but we have a BSD router with full routing tables with has four iBGP peers and one external BGP peer; the latter is a customer exporting a small number of routes to it. That router has 32 MB, gated takes about 15 MB. Another BGP4-speaking router has the same number of iBGP peers and one external peer; it has 48 MB and currently shows 13 MB free. On that machine gated takes 16 MB. This isn't the size of a view. Each full view adds something like 3 - 5 MB. One of our FreeBSD routers has over 30 peers at the LINX in London; on that machine gated runs 17 MB. So our judgment is that 32 MB is borderline right now for a gated router holding a single full view. We put 64 MB on any new routers. We use motherboards that will take 128 MB in 32 MB SIMMs, but don't expect to need 128 MB this year, perhaps not next. -- Jim Dixon VBCnet GB Ltd http://www.vbc.net tel +44 117 929 1316 fax +44 117 927 2015
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