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. --Kent
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.
LAN speeds can keep up with WAN speeds at OC-3, just use ATM. --- Stephen Balbach "Driving the Internet to Work" VP, ClarkNet due to the high volume of mail I receive please quote info@clark.net the full original message in your reply.
Re: value of colo. Sometimes it's helpful to use a colo as a mini-POP and drag lines out to local customers or to other colo members who want to buy transit. A NAP with enough space to rent whole cages seems like something a lot of people would want -- down at WilTel they really frown on private wires between cages and they don't own a GIGAswitch. Re: fast packet data services. The telcos have really screwed the pooch with ISDN, SMDS, and ATM. I'm not sure why F-R has worked well without years of delay, but it's a real anomoly. I have little if any confidence that I will be able to buy OC3 speed ATM and use it to contact 200 (or even 20) metro-area NAP partners any time this century. ISP's who practice conservative engineering (i.e., safe sex) will continue to buy the fastest telco pipes they can get _among_those_which_actually_work_ and this is probably going to be raw fibre before it starts to be 155Mb ATM. I'm not in love with the idea of a barn full of routers all hooked up to a GIGAswitch milking machine, but I have to prefer the config that works. I know that after years of trauma and chaos and delay, we now have a couple of NAPs implemented on an ATM mesh. If I ever see an ATM NAP come online with dozens of 155Mb/s members and no chaos, trauma or delay, I promise to post a full apologia here.
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?
participants (4)
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Kent W. England -
Paul A Vixie -
Russ Pagenkopf -
Stephen Balbach