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RPSL and Cisco Conditional Advertisement
by Howard C. Berkowitz 04 May '01

04 May '01

One of those questions, I'm afraid, that could go to an assortment of lists. Has anyone defined an RPSL construct that can express the semantics of Cisco BGP conditional advertisement? I can see how to express "static" relationships, but not dynamic ones among routes, and an action clause doesn't quite fit. TIA, Howard

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RE: BGP Question: Problems with connectivity when using local pre ferences
by Devon True 04 May '01

04 May '01

All: Thanks for the replies off-list. Telocity (AS12050) got a hold of me and the problem is now solved. Thanks! ----- Devon True -----Original Message----- From: Devon True Sent: Thursday, May 03, 2001 9:28 PM To: 'nanog(a)merit.edu' Subject: BGP Question: Problems with connectivity when using local preferences All: We are running BGP4 between Sprint and UUNet. We are using route-maps to add local preferences to certain AS numbers to force traffic out Sprint rather than UUNet. One of the AS's we force out Sprint is AS3356 (Level3). Our CTO has a DSL line from a local provider. When he traceroutes from his DSL connection, he goes across the DSL provider, Level3, and stops at UUNet. When I run a traceroute to his DSL IP, I go across UUNet, Level3, and stop at the DSL provider's router. Here is the AS path that my traceroute takes: AS701 -> AS3356 -> AS12050 Here is the AS path that his traceroute takes: AS12050 -> AS3356 -> AS701 We are forcing Level3 routes out our Sprint connection, but AS12050 routes go out UUNet (no local-preference change). When I took out Level3's AS from our route-map, thus sending Level3 routes out UUNet, everything worked fine. He could reach us and I could him. Any ideas why? Devon

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BGP Question: Problems with connectivity when using local prefere nces
by Devon True 04 May '01

04 May '01

All: We are running BGP4 between Sprint and UUNet. We are using route-maps to add local preferences to certain AS numbers to force traffic out Sprint rather than UUNet. One of the AS's we force out Sprint is AS3356 (Level3). Our CTO has a DSL line from a local provider. When he traceroutes from his DSL connection, he goes across the DSL provider, Level3, and stops at UUNet. When I run a traceroute to his DSL IP, I go across UUNet, Level3, and stop at the DSL provider's router. Here is the AS path that my traceroute takes: AS701 -> AS3356 -> AS12050 Here is the AS path that his traceroute takes: AS12050 -> AS3356 -> AS701 We are forcing Level3 routes out our Sprint connection, but AS12050 routes go out UUNet (no local-preference change). When I took out Level3's AS from our route-map, thus sending Level3 routes out UUNet, everything worked fine. He could reach us and I could him. Any ideas why? Devon

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oc12 card in DC area?
by Michael C. Toren 03 May '01

03 May '01

Hi, Does anyone in the DC area have a long range oc12 card for either a GSR or a Juniper that they would be willing to let us borrow for less than 24 hours? If so, please contact me offlist, or at (610) 862-0404. Thank you very much, -mct

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Re: graphical display of routes
by Mikael Abrahamsson 03 May '01

03 May '01

On Thu, 3 May 2001, Seth H Holmes wrote: > Why announce anything other than the full aggregate? I'm not talking about eBGP announcements here, but IGP routes for /30 and such. I want to see if there are any gaps in my current IP plan, perhaps currently unused link nets etc. -- Mikael Abrahamsson email: swmike(a)swm.pp.se

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graphical display of routes
by Mikael Abrahamsson 03 May '01

03 May '01

I've been thinking of how to solve the "problem" of knowing what adresses are routed or not in our IGP. Does anyone know of a utility that you can feed a "show ip route ospf" or perhaps via snmp someway, that'll display what part of the IP space there is a route for or not, perhaps divided by /24 or /19 or something. What I was thinking of was to create a gif, with one pixel per IP number, so a /30 route would show up as a 4 pixel line etc. A /19 would then be a block of 256 times 32 pixels, where one can fairly easily see what IPs are being routed or not. It seems to be a common problem that link nets come and go and are not being reused.... Any good ideas? -- Mikael Abrahamsson email: swmike(a)swm.pp.se

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Looking for a provider..
by kevin graham 02 May '01

02 May '01

We're trying to find secondary IP transit in Level3's 1380 Kifer (San Jose) facility. fastether cross connects would be preferable, but OC3 (ATM or PoS) would be OK. If anyone knows who's there that could do this, I'd appreciate a private reply.. Thanks. ..kg..

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terminal server recommendation
by Charles Smith 02 May '01

02 May '01

I would like to deploy a terminal server in several of my POPs, however cost is a slight issue. Can anyone on the list recommend a fairly inexpensive terminal server (besides Cisco)? Obviously the terminal server should be reliable and work - it is the little things that count. chas _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com

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Re: terminal server recommendation
by SMcGrath＠dhhs.state.nh.us 02 May '01

02 May '01

Charles, Look at the Xyplex terminal servers, They have all the features of the Cisco boxen and are very reliable when I was working for the airlines we would install them in maintenance hangars for terminal access and forget them for years You can purchase them new or they show up on ebay for 1-300 dollars and you can purchase a maintenance agreement for a very reasonable price. They have several lines the 18xx which boot from floppies/tftp/mop and are disco'd but can be had for less than $100 and have most of the feaures of the current 16xx/72x series which boot from flash/tftp the 16xx series is a stackable series and the 72x series goes in the Network 9000 chassis system. You can check out their spec's at www.nbase-xyplex.com. The connection on all of their devices are RJ-45's so cross patching is easy and 3 wire configs do work Hope this helps - Scott "Charles Smith" <chasmith9(a)hotmail.com>@merit.edu on 05/01/2001 04:12:34 PM Sent by: owner-nanog(a)merit.edu To: nanog(a)merit.edu cc: Subject: terminal server recommendation I would like to deploy a terminal server in several of my POPs, however cost is a slight issue. Can anyone on the list recommend a fairly inexpensive terminal server (besides Cisco)? Obviously the terminal server should be reliable and work - it is the little things that count. chas _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com

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RE: black hat .cn networks
by Roeland Meyer 02 May '01

02 May '01

How quickly can CN be firewalled anyway? > -----Original Message----- > From: Dan Hollis [mailto:goemon@anime.net] > Sent: Monday, April 30, 2001 2:59 PM > To: 'nanog(a)merit.edu' > Subject: black hat .cn networks > > > > http://wired.com/news/politics/0,1283,43437,00.html > > Time to drop AS4134. > > -Dan > >

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