Date: Thu, 11 May 2006 23:12:29 -0400 From: Stephen Clark <Stephen.Clark@seclark.us> To: Robert Watson <rwatson@FreeBSD.org> Cc: pavlin@icir.org, atanu@icir.org, freebsd-net@freebsd.org Subject: Re: IP_MAX_MEMBERSHIPS story. Message-ID: <4463FD1D.9010600@seclark.us> In-Reply-To: <20060512030152.X20138@fledge.watson.org> References: <20060509122801.GA65297@spc.org> <20060509131517.GB79277@spc.org> <20060512030152.X20138@fledge.watson.org>
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Robert Watson wrote: >On Tue, 9 May 2006, Bruce M Simpson wrote: > > > >>On Tue, May 09, 2006 at 01:28:01PM +0100, Bruce M Simpson wrote: >> >> >>>A user recently reported a problem with running into IP_MAX_MEMBERSHIPS >>>on a system running FreeBSD with IPv4 forwarding enabled, and running >>>the OSPF routing protocol. >>> >>> >>More background. People may be wondering why this is even an issue for >>FreeBSD as a router. >> >>The answer: the imo_membership array contains members which exist as >>separate entries for each ifnet in the system, and the system where this was >>observed to be a problem had a number of ifnet interfaces which was larger >>than IP_MAX_MEMBERSHIPS (20). >> >> > >I'm loosely of the opinion that the membership array should be variable >length, and that we should default it to 20, but have a significantly larger >maximum. It's not horribly efficient, but also wouldn't be so particularly >terrible either. > >Robert N M Watson >_______________________________________________ >freebsd-net@freebsd.org mailing list >http://lists.freebsd.org/mailman/listinfo/freebsd-net >To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" > > > I think it should be tunable other than going in a changing the source code, which I have to do every time I do a cvsup. My $.02 Steve -- "They that give up essential liberty to obtain temporary safety, deserve neither liberty nor safety." (Ben Franklin) "The course of history shows that as a government grows, liberty decreases." (Thomas Jefferson)
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