Great Circle Associates Firewalls
(September 1994)
 

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Subject: Re: Livingston vs MorningStar routers
From: m-kf2480 @ SPARKY . CS . NYU . EDU (Kuojueng Fung)
Date: Thu, 8 Sep 94 10:50:45 EDT
To: firewalls @ greatcircle . com

> > 
> Just set up a Livingston Router.  It was shipped with obsolete software 
> that didn't work with the LMI protocol, and can NOT have more than one 
> subnet mask type.  This is a FATAL flaw.  My frame relay service provider 
> had to provide me with an entire class C address just so they could have 
> a dedicated circuit to our Livingston router.  IE:
> Insinc (frame relay service provider) netmask (router-router) was 
> 255.255.255.252.  Perfect, gate the routers their own little net - 1,2 
> for the routers and 0 and 3 for network and broadcast address.  The 
> Livingston IRX portmaster could not do this as I required a netmask of 
> 255.255.255.0 for my internal network.
> In short, I needed the frm1 interface to have a netmask of 255.255.255.252.
> I needed my ether0 interface to have a netmask of 255.255.255.0.
> The Livingston portmaster could not handle this.  Yuck.
> 
Funny thing, I just replaced my Livingston with Cisco 2500, the Livingston
was grabbing my internal packets and bouncing it off the router at my service
provider.  What I actually had to do was create permanent arp entries in my
bastion host to get around this problem.  

Granted I have had the Cisco for about an hour but it seems to be handling
the routing much better.

Kuojueng Fung
Manager, System & Architecture
Prentice Hall Legal & Financial Services


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