*BSD News Article 94419


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From: Andre Oppermann <oppermann@pipeline.ch>
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: How to test pure routing ability of routed ??
Date: Fri, 25 Apr 1997 16:14:16 +0200
Organization: Internet Business Solutions Ltd. (AG)
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Do you really need routed? If you want do *real* routing use gated.
Gated supports all usefull routing protocols like (RIP)/OSPF/BGP4.

Tony Griffiths wrote:
> =

> chris andrichak wrote:
> >
> > Hi all,
> >
> > does there aexist any numbers/whatever on the pure routing capabiliti=
es of FreeBSD routed on a Pentium class machine? THings like packets forw=
arded, throughput, etc..??
> =

> You are confused about what happens with TCP/IP packets and routing (IP=

> forwarding is a better description of what is happening)!!!
> =

> Basically, other than RIP packets, routed does not see ANY IP packet in=

> transit between two interfaces on a FreeBSD system.  The ONLY thing tha=
t
> routed does (some would say badly) is maintain the state of the routing=

> table.  It is this table that the IP code uses to determine which
> interface an IP packet should be sent to, assuming it is not for the
> host itself.  If the IP code cannot determine an interface either by an=

> explicit match or via a default route, then is DOESN'T handoff the
> packet to routed, it simply DROPS it!!!  Actually, it might send an ICM=
P
> datagram back to the originating host saying that it has dropped the
> packet just to be nice.
> =

> With regard to testing, get two VERY fast machines (ie. Alphas or
> PPro200s) and connect them each to two Ethernet cards in the system
> under test.  Try flood pinging of ftp file transfer with small MTU to
> force the packets/sec up to around the limit of the Ethernet.  I suspec=
t
> that a Pentium-class machine can do LOTS AND LOTS.
> =

> Tony

-- =

Andre Oppermann

CEO / Gesch=E4ftsf=FChrer
Internet Business Solutions Ltd. (AG)
Hardstrasse 235, 8005 Zurich, Switzerland
Fon +41 1 277 75 75 / Fax +41 1 277 75 77
http://www.pipeline.ch    ibs@pipeline.ch