Re: Help Request -- Firewall-1 Link Down

["David R. Sears" <sears () eglin af mil>]

We had the same problems.  Add the the following lines to your /etc/system
file to force the hme1 interface to 100 Mbps Full Duplex and the problem
should go away.  (autosensing doesn't work properly...)

*
* Configure hme interface for full duplex 100 Mb
 
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


(NOTE: set hme:hme_adv_100fdx_cap=1  is the line that does the work.)


+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

On Sat, 10 Apr 1999, Ryan Russell wrote:

> > I will periodically lose
> > connections to (and through) the firewall. The /var/adm/messages file will
> > record this series of messages at each occurance.
> >
> > Mar 29 15:23:28 granite unix: SUNW,hme1: Link Down - cable problem?
> > Mar 29 15:23:30 granite unix: SUNW,hme1: Link Down - cable problem?
> > Mar 29 15:23:31 granite unix: SUNW,hme1: Using Internal Transceiver
> > Mar 29 15:23:31 granite unix: SUNW,hme1: 100 Mbps half-duplex Link Up
>
> I've had this a few times.  Didn't track this down completely, but the problem
> has to do with the Sun box trying to auto-sense speed and duplex on
> the hme.  I was constantly having this problem when I had one interface
> plugged directly into a Cisco 7513 using the older (non-VIP) 100Mb
> router card, with a cross-connect cable.  The routers don't seem as
> autosense-friendly as the switches do.  I fixed that by running it
> through a Catalyst 5500 switch and then to the router.  For whatever reason,
> the Cats sync up fine with the routers, go figure.
>
> There are also Sun patches that are supposed to relate to this, though
> the description specifically mentions Bay switches.  I remember the
> patches fixing one similar problem I had on a Sun server.
>
> There's the more obvious stuff... force one or both ends of the link to
> a speed and duplex, make sure that you're using Cat 5 cable,
> that none of the cable is marginal, etc...
>
>                               Ryan