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Re: SONET ring questions
by Dave Israel 15 Oct '98

15 Oct '98

> 1) Bell Atlantic assures us that, because of the redundancy, we can > expect 100% uptime from the OC-12. I would like feedback as to > whether this is a realistic portrayal of the SONET environment. Assuming the primary and backup paths are not in the same cable anywhere (don't laugh, it happens), the chances of the OC-12 itself failing inside Bell land are tiny. (Of course, if your local loop gets assaulted by a backhoe, you're in trouble.) > 2) We have the option of using either single-mode or multi-mode fiber > OC-3 connections - what factors should be considered in selecting > the fiber media type. Single mode goes farther. Multi-mode is cheaper. If you've got relatively short cables, save some money and use multi-mode. If you're dragging fiber all the way across the building, or between buildings on a campus, use single-mode. > 3) Which routers should be used. The options are 3com NB-II's DPE+ > (dual CPU), Cisco 7200 series, or Cisco 7500 (each router will > have at least two 100Base-T LAN ports). OK, I know the 3com > suggestion is a loaded question for this list, but has anybody > used the 3com's in this capacity? We are a 3com shop that is > considering switching to Cisco - this is a significant decision > because switching will require us to continue to maintain the > existing 3com environment (~500 routers) and the new Cisco > routers. If you go Cisco, I'd recommend the 7500 series. The 7200 series won't handle two OC-3's and two fast ethers. You'll drop packets.

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TCP Sliding windows utilities for NT 4.0
by Joe Graham 15 Oct '98

15 Oct '98

Hi All, Is there a Utility to adjust the TCP sliding windows in NT 4.0 Ip (for the moment)? Please reply to jroy(a)netscape.net Best Regards, Jerry Roy

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CCIE
by Cathy Freed 15 Oct '98

15 Oct '98

BPI is a leading independent provider of superior-quality, high-performance, value-added systems integration backed by exceptional standards of support and service. We are currently seeking qualified candidates for the following position: Certified Cisco Internetwork Expert We have an immediate need for a CCIE. This position will provide Cisco expertise to 2 major BPI clients and will require the CCIE to work at these client sites. Salary negotiable and flexible. This position is located in beautiful Littleton, Colorado ( Just outside of Denver.) Relocation is covered. We will tailor this position around the needs of the right person. For immediate consideration, please email or fax your resume to Cathy Freed at cfreed(a)bpi.com or (303) 797-0327. Cathy Freed Corporate Account Executive Business Professional Staffing (303) 798-0613 x226 (303) 797-0327 cfreed(a)bpi.com www.bpi.com/bps

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RE: Gigarouter
by Greg Mirsky 15 Oct '98

15 Oct '98

My apologies to those offended by my note. I wouldn't argue about terminology so much. If GRF and GSR get into Gigarouter category - fine with me and my sincere congrats to all. What I've ment was that, as you all know, there are M40 out there and it's only the beginning of new and exciting era. And it wasn't 'vendor's shpil'. Again, sorry and good luck in pumping these Gigabytes! Greg > -----Original Message----- > From: Howard C. Berkowitz [SMTP:hcb@clark.net] > Sent: Thursday, October 15, 1998 11:05 AM > To: nanog(a)merit.edu > Subject: RE: Gigarouter > > Greg Mirsky observed, > > >Rogerio, > >these are not REAL gigarouters. Real once yet to come ;). Stay tuned > > > > Greg > > > > Or is it that the current ones are gigarouters, but the next > generation > will be terable? >

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Gigarouter performance
by Rogerio Alvarez - DRS23 15 Oct '98

15 Oct '98

I know that these boxes work well, theorically, but I really want to know if there is any ISP using them on their core, and how many traffic it�s supporting . Another issue is, if I have 30 ATM PVC�s over an OC-12 interface, how well this box will treat each one, it will be possible to provide QoS for these PVC�s inside the box without impact the others services. Rogerio

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Re: Gigarouter
by David Greer 15 Oct '98

15 Oct '98

Rogerio, I haven't the need for that kind of hardware so I haven't checked into it, so forgive me if this is a stupid question with a well known answer. But, why are these not true giga class routers? David A. Greer Senior Telecomm Analyst General Nutrition Companies, Inc. 300 Sixth Avenue Pittsburgh, PA 15222 (412) 338 - 2539 (V) (412) 402 - 7000 (F) -----Original Message----- From: Greg Mirsky <gmirsky(a)nexabit.com> To: Rogerio Alvarez - DRS23 <rogerio(a)embratel.net.br>; nanog(a)merit.edu <nanog(a)merit.edu> Cc: eng-l(a)embratel.net.br <eng-l(a)embratel.net.br> Date: Thursday, October 15, 1998 10:57 AM Subject: RE: Gigarouter >Rogerio, >these are not REAL gigarouters. Real once yet to come ;). Stay tuned > > Greg > >> -----Original Message----- >> From: Rogerio Alvarez - DRS23 [SMTP:rogerio@embratel.net.br] >> Sent: Thursday, October 15, 1998 9:36 AM >> To: nanog(a)merit.edu >> Cc: eng-l(a)embratel.net.br >> Subject: Gigarouter >> >> Hi. >> >> Anyone there has any information (experience) about Gigarouters like >> GRF1600 (Ascend) or >> GSR12000 (Cisco). >> >> I want to know performance, availability, scalability and limitations >> data in "real world", >> I mean in real condition of internet traffic. >> >> Thanks in advance. >> >> Rogerio

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Re: IP address space management
by Douglas S. Ring 15 Oct '98

15 Oct '98

Brandon, We use Accugraph to manage our single ip assignments, and subnet assignments. The product works very well for assigning CIDR subnets for our downstream customers. Might want to check them out.. they're located out of El Paso, TX .. or www.accugraph.com. The product is called IPAM or ASM, not sure which name they're using lately. -Douglas Ring Manager Internet Network Engineering SBC Internet Services At 11:52 PM 10/14/98 -0400, Brandon Ross wrote: >We are in need of a software package to manage our IP space. We've looked at >several products on the market but haven't found anything that really suits an >ISP's needs very well. Does anyone know of anything on the market that works >well? It should understand CIDR and be hierarchical. Most products we've seen >have been aimed more at the Enterprise market and include a lot of things we >don't need like interfaces to DNS and DHCP. Any suggestions? >-- >Brandon Ross Network Engineering 404-815-0770 800-719-4664 >Director, Network Engineering, MindSpring Ent., Inc. info(a)mindspring.com > ICQ: 2269442 > >Stop Smurf attacks! Configure your router interfaces to block directed >broadcasts. See http://www.quadrunner.com/~chuegen/smurf.cgi for details. > >

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AS map
by Philippe Strauss 15 Oct '98

15 Oct '98

Hi there, Is there any project of building a graphical AS map from BGP full route table snapshot? I remember seeing something like that on the web, but i can't find anything now that I need it :-) I also remember comment saying that sorting out the whole mess of BGP peers took weeks on a sparcstation5.. Anyone with an URL?? TIA, Cheers. -- Philippe Strauss, ingenieur systeme/reseau, Urbanet SA philippe.strauss(a)urbanet.ch tel +41 21 623 30 20 --

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Re: BGP as an IGP (Was Re: IGPs in use)
by Sean M. Doran 15 Oct '98

15 Oct '98

Chrisy Luke wrote: | Paul G. Donner wrote (on Oct 13): | > If BGP rides on TCP, how are the TCP sessions built if BGP itself is used | > as the IGP? | | Same way as it does when you take next-hops from any other IGP. The fact | that one already has a route to ones' directly attached networks. In other words, the interior routing protocol is either static or a combination of statically configured routes and the likes of ARP/ES-IS/other neighbour discovery protocols. The key point is that, in a router talking iBGP, the route to the NEXT_HOP received by an iBGP neighbour *MUST* be known through means other than BGP. This is not to say that the route need be dynamic -- a static default route would do just fine. Sean.

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Need help with registering Maintainer info with CW.NET
by miguel a.l. paraz 15 Oct '98

15 Oct '98

Hi, This maybe off-topic here but I hope someone can help. I need to get BGP up and running with Cable & Wireless (ex-MCI) really soon. But, my submission for the Maintainer Object to the Routing Registry, which is manually approved, isn't being acknowledged. Without this I can't register my routes. I've e-mailed the supposed account rep for the Philippines (where I am), but I've received no response either. Anyone from Cable & Wireless here? Thanks, -- Miguel A.L. Paraz +63-2-750-2288 CTO, IPhil Communications www.iphil.net

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