PIX Firewall is not available with a Gigabit Ethernet LX optical interface. There is probably just not much of a market out there for one.
Gigabit Ethernet SX over monomode (single mode) fiber is not supported. It may work over a short distance, such as a 2-meter patch cable length, but I wouldn't want to rely on it in a production environment.
To start with, the diameter of the monomode fiber is so small (8-9um vs. 50-62.5um for multimode) that it reduces the launch aperture area by more than 96%. On top of that, I believe the transmitter on SX optics is offset from the optical axis of the fiber, for optimum performance with multimode fiber; the offset is probably enough that most if not all of the optical signal doesn't even hit the available launch window of the monomode fiber. Consider yourself lucky if any usable signal is received at the other end.
You're better off terminating the monomode fiber run on optics that it is intended for. A Gigabit Ethernet LX (single mode) to SX (multimode) media converter would work. Or, if you have two available GBIC slots in a switch, use an SX and an LX/LH GBIC and put those two ports in a unique VLAN, and let the switch be your media converter. Cost of the GBICs is probably about the same as the media converter, you just need the two GBIC slots to make it work.
Yep that is exactly what i expected. No LX Version - the thing with the two Gbics in one seperate VLan sounds interesting and might be a nice workaround. You got always some GBICS flying a round compared to SX/LX converter.
We already triggered Cisco for an LX Version of the Pix . Even if there is no big market the price difference on a LX or SX Version is marginal und can not be an argument.
Once again thanks for the info and for testing it out.
This document gives several answers on frequently asked questions for PFRv3 channel state behavior.
Q1: What are all the channel operational states from a BR (border role) perspective and what are the rules/conditions to be in each st...
The need was to reach an host inside a LAN through a VPN connection managed by the LAN gateway (Cisco 1921).
The LAN gateway performs NAT and there was a dedicate nat rule for the host i wanted to reach through VPN.
I couldn't connect to the hos...
We have 3 identical switches configured by someone else and would like to claim some of the Gigabit ports(G1/G2/G3/G4) for use on servers. When we try to change the wiring and configuration, we run in to connectivity issues. Attached is a des...