Date: Sun, 19 Apr 1998 19:35:31 -0400 From: Mike Tancsa <mike@sentex.net> To: questions@FreeBSD.ORG Subject: routers, kernel parameters and bizarro netstat -m output Message-ID: <3.0.2.32.19980419193531.0251a100@sentex.net>
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Can anyone reccomend any kernel parameter tweaks for a FreeBSD 2.2-STABLE
box that will act as a multi port router ? (3 fxp interfaces). The machine
will only running gated with OSPF interally for now, and fairly soon BGP
when our second upstream comes online.
Is it better to manually increase some network related parameters, or just
do it by increasing MAXUSERS ?
The machine I am readying gives some numbers at initial bootup that are a
little confusing. Why for example would a machine that has yet to do
anything really, come up with value like this
temp-iolite# netstat -m
199 mbufs in use:
194 mbufs allocated to data
1 mbufs allocated to packet headers
3 mbufs allocated to protocol control blocks
1 mbufs allocated to socket names and addresses
192/206 mbuf clusters in use
436 Kbytes allocated to network (93% in use)
0 requests for memory denied
0 requests for memory delayed
0 calls to protocol drain routines
Also, when I reconfig the kernel for more max users, it doesnt seem to make
a difference in how many mbuf clusters are available.
temp-iolite# netstat -ni
Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll
fxp0 1500 <Link> 00.a0.c9.4b.a5.f4 559 0 356 0 130
fxp0 1500 199.212.135.1 199.212.135.161 559 0 356 0 130
fxp1 1500 <Link> 00.a0.c9.8c.f1.53 0 0 1 0 0
fxp1 1500 192.168.201 192.168.201.1 0 0 1 0 0
fxp2 1500 <Link> 00.a0.c9.89.d9.7e 0 0 1 0 0
fxp2 1500 192.168.202 192.168.202.1 0 0 1 0 0
tun0* 1500 <Link> 0 0 0 0 0
sl0* 552 <Link> 0 0 0 0 0
ppp0* 1500 <Link> 0 0 0 0 0
lo0 16384 <Link> 0 0 0 0 0
lo0 16384 127 127.0.0.1 0 0 0 0 0
I did a search through some 400 postings in Dejanews for the terms kernel
and router and tried to search http://www.freebsd.org/search.html, but the
mail archives seem to be offline.
**********************************************************************
Mike Tancsa (mike@sentex.net) * To do is to be -- Nietzsche
Sentex Communications Corp, * To be is to do -- Sartre
Cambridge, Ontario * Do be do be do -- Sinatra
(http://www.sentex.net/~mdtancsa) *
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