[1465] in North American Network Operators' Group

home help back first fref pref prev next nref lref last post

Re: value of co-location

daemon@ATHENA.MIT.EDU (Russ Pagenkopf)
Fri Jan 19 21:45:17 1996

Date: Fri, 19 Jan 1996 19:17:03 -0700 (MST)
From: Russ Pagenkopf <russ@ism.net>
To: nanog@merit.edu
In-Reply-To: <2.2.32.19960119231617.006b0818@mail.cts.com>

On Fri, 19 Jan 1996, Kent W. England wrote:
> At 12:24 PM 1/19/96 -0500, Stephen Balbach wrote:
> >Get a 100Mb FDDI or Ethernet connection between the two colocated 
> >routers.  
> >
> >Then bring in multiple Fast packet services into your router which then 
> >aggregates out the LAN port.
> >
> >
> This breaks down when the connection speed goes from DS-3 to OC-3.

I understand this (I think :), but I've a theoretical question.  

Assuming the following:

	T1	T1	T1	T1	...
	|	|	|	|	|
	R	R	R	R	R	[R = router]
	|	|	|	|	|
	+-------+-------+-------+-------+
	|	Etherswitch		|
	+---------------+---------------+
			|(A)			[A = 10Mb Ethernet]
	+---------------+---------------+
	|	Cisco 4500		|
	+---------------+---------------+
			|
			T3

Just how many T1->Router->Etherswitch connections can be run through 
point A (a single 10Mb ethernet) before things become unbearable (real 
world here, I think I can do the math :-)? Should I look at a 100Mb 
ethernet port on the 4500 instead of the dual 10M ethernet option?

I'm working on a project for a small NAP, and this concerns me. I'd 
rather not do something stupid with the money ;).

rus

Russ Pagenkopf        (406) 542-0838      Internet Services Montana (ism.net) 
Hardware and Business Manager		    Connecting the World to Montana
       All questions can be answered thus. NO. YES. MAYBE. EH?


home help back first fref pref prev next nref lref last post