What vintage is the PIX?
Some of the older PIX boxes only had Ethernet
interfaces and not Fast Ethernet. It sounds like you may have one of the older
boxes.
In the config is the interface referred to
as E0 or FE0?
To confirm do a show tech and look at the
hardware section to see if the Ethernet interface is listed as simply Ethernet or
Fast Ethernet.
From:
firewall-wizards-bounces@listserv.icsalabs.com
[mailto:firewall-wizards-bounces@listserv.icsalabs.com] On Behalf Of Drumheller, Michael
Sent: Thursday, April 19, 2007
12:44 PM
To:
firewall-wizards@listserv.icsalabs.com
Subject: [fw-wiz] PIX 515E 7.2
Duplex problem
The
interface on the PIX shuts down when duplex is changed from auto to full.
The switch it connects to is configured for full duplex but the PIX still shows
half duplex when in auto negotiate mode. Changing to half duplex on both
the switch and PIX works but the PIX interface goes down when it's changed to
full duplex. Has anyone else experienced this problem?