Hi
Well lets start out by saying I have worked with FR for many years, so let
me share my pain with you.
First, FR is not redundent, and in and of it's self can not be made
redundent. There are several things one can do to help bring up the "up
time" with a FR network.
1) Use a redundent layer 1 connection, e.g. SONET ring. This will insure
that a single cut will not drop your connection. Be careful as many telcos
are hot to sell SONET rings, but they do not provide full redundency, e.g.
terminating in only one CO and passing thru the other. This is an expensive
thing to do.
2) The closer you get to 100% uptime on any system/network, the cost to
achive it will grow exponitionally. So you had better make sure that the
business need is real and balanced against the costs.
3) Common methods to deal with FR outages.
a) ISDN dial backup. Works well, but has limited bandwidth, e.g.
replacing a 1Mbps PVC with a 128Kbps line.
b) Analog dial. Same cavetes.
c) VPN thru the Internet. Works fairly well, however can be a pain to
setup, and you are using a public network that is known to be about as
reliable as FR ;-)
4) Full or partial mess network.
So you need to step back and ask, "what problem am I trying to solve". There
are a ton of people that have had to deal with FR and it's outages, so there
are lots of resources out there to tap. But none of it will mean anything
unless you ask yourself the question.
HTH
John Hardman CCNP MCSE
""Raul De La Garza"" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Please forgive me if this topic has already been explored.
>
> I am considering the purchase of a 3640 in order to provide Internet
access
> to our office at 100 Mbps. I will outfit it with 2 10/100 2-port modules.
>
> I am also considering making our Frame Relay network redundant by adding
two
> 1-port T1 w/CSU WICs, however, with only two FR lines coming in how would
I
> make this a fault tolerant solution without having to obtain two more FR
> circuits? HSRP is definitely being considered. Obviously, an Ethernet
hub
> or switch is out of the question.
>
> Any help you could provide would be greatly appreciated.
>
> Raul De La Garza III
> _________________________________________________________________
> Get your FREE download of MSN Explorer at http://explorer.msn.com
>
> _________________________________
> FAQ, list archives, and subscription info:
http://www.groupstudy.com/list/cisco.html
> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
>
_________________________________
FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
