bunch of ndd commands will allow you to hard code port speed and duplex:
listing follows
Enjoy.
Travis
Good, Fast, Cheap: Pick any two (you can't have all three).
Port Speed / Duplex Settings:
Port speed and duplex should be hard-coded on both the switch and the
server. Sunsolve docs give two methods, one using /etc/rc2.d/S99 and one
using /etc/system.
/etc/rc2.d/S99:
ndd -set /dev/hme instance 0
ndd -set /dev/hme adv_100T4_cap 0
ndd -set /dev/hme adv_100fdx_cap 1
ndd -set /dev/hme adv_100hdx_cap 0
ndd -set /dev/hme adv_10fdx_cap 0
ndd -set /dev/hme adv_10hdx_cap 0
ndd -set /dev/hme adv_autoneg_cap 0
/etc/system:
set hme:hme_adv_autoneg_cap=0
set hme:hme_adv_100T4_cap=0
set hme:hme_adv_100fdx_cap=1
set hme:hme_adv_100hdx_cap=0
set hme:hme_adv_10fdx_cap=0
set hme:hme_adv_10hdx_cap=0
> -----Original Message-----
> From: Kashani [SMTP:kashani@enteract.com]
> Sent: Tuesday, December 07, 1999 12:08 PM
> To: cisco-nsp@puck.nether.net
> Subject: Re: [nsp] c1900 FCS errors
>
> Been fighting with this one myself, if it's the same problem.
>
> Sun boxes like to auto negotiate their connection. If the Cisco is set to
> full 100, full dup you will see FCS errors or at least on 29xx and 55xx in
>
> my experience. Try setting your switch to auto negotiate the connection.
> The only problem this introduces is that when you reboot the switch your
> Sun machines may negotiate a lower connection, usually half dup/100.
> Resetting the connection will cause it to pick the higher setting the next
>
> time around. I think it has something to do with the way the Cisco boots.
>
> There may also be a way to make the Sun box happy with being told what its
>
> connection should be. I've heard rumors, but haven't found anything that
> actually worked.
>
> Kashani
>
>
> At 10:06 PM 11/26/99 -0500, Deepak Jain wrote:
>
> >One of our internal C1900s is generating a bunch of FCS errors on its
> >100Mbit B port:
> >
> > Catalyst 1900 - Port B Statistics Report
> > Receive Statistics Transmit Statistics
> >-------------------------------------
> -------------------------------------
> >Total good frames 134549 Total frames
> 116033
> >Total octets 93924939 Total octets
> 10939182
> >Broadcast/multicast frames 1 Broadcast/multicast frames
> 692
> >Broadcast/multicast octets 64 Broadcast/multicast octets
> 47891
> >Good frames forwarded 134549 Deferrals
> 0
> >Frames filtered 0 Single collisions
> 0
> >Runt frames 435 Multiple collisions
> 0
> >No buffer discards 0 Excessive collisions
> 0
> > Queue full discards
> 0
> >Errors: Errors:
> > FCS errors 4185 Late collisions
> 0
> > Alignment errors 0 Excessive deferrals
> 0
> > Giant frames 11 Jabber errors
> 0
> > Address violations 0 Other transmit errors
> 0
> >
> >---
> >
> >This port is generating about 100-140 FCS errors per update interval (~1
> sec)
> >connected directly to a Sun Ultra @ 100MBit/s FD. The server is averaging
> >about 10-20Mbit/s of traffic. Store and Forward was off, but then turned
> >on after the Cisco site recommended using S&F to prevent FCS frames from
> >being filtered.
> >
> >What is wrong (if anything)? there seems to be a consensus that high
> speed
> >connects can draw FCS errors.
> >
> >Thanks,
> >
> >Deepak Jain
> >AiNET
> >
>
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