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Experience with Third-Party memory (Cisco)?
by Shawn L 09 May '14

09 May '14

With all the talk lately about the growth in routes, I got to thinking about upgrading the memory in a couple of my routers. Does anyone have experience using third-party "guaranteed compatible" memory. With Cisco's discount it looks like I can upgrade for $5k vs $700 with third party memory. I'm just wondering if others have used it, and how it's performed, or if it isn't worth the risk. thanks

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US patent 5473599
by Nick Hilliard 09 May '14

09 May '14

... turns 20 today. This is the patent which covers hsrp, vrrp, many applications of carp and some other vendor-specific standby protocols. Assuming no term adjustments, 20 years is the normal term for US patents so unless there's been any adjustments / continuations, probably this patent is now expired. More details on: https://www.google.com/patents/US5473599 Nick

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bgp convergence problem
by Song Li 08 May '14

08 May '14

Hi everyone, I have one bgp convergence problem which confused me. The problem is as follows: +--------+ | AS5 | +------+16.1/16 | | +-----+--+ | | +---+--+ | | AS4 | | | | | ++-----+ | | | | | | | +-----+--+ +-+-----+ | AS2 | | AS3 | 16.1/16 (5) | ISP | | ISP | +---^----+ +---^---+ | | | +--------+ | +-----+ AS1 +----+ |customer| +--------+ 16.1/16 (2 4 5) AS1 multihomed to AS2 and AS3, for some reasons AS1 disconnect from AS3, and as a resutl the route to 16.1/16 will be 16.1/16 (2 4 5). After a while, the BGP seesion between AS1 and AS3 reestablished but AS1 leaks the route 16.1/16 (2 4 5) to AS3. At this point, 1/ AS1 will have two bgp routes for prefix 16.1/16: 16.1/16(2 4 5)and 16.1/16(3 5), according to shorter AS_PATH it will select 16.1/16(3 5) as best route. 2/ AS3 also have two bgp routes: 16.1/16(2 4 5) and 16.1/16(5), according to local_pref it will select 16.1/16(2 4 5). in this case, AS1 and AS3 select each other as the best route to AS5, i wonder which route will be the final best route after bgp convergence in AS1 and AS3. Thanks! -- Song Li Room 4-204, FIT Building, Network Security, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China Tel:( +86) 010-62446440 E-mail: refresh.lsong(a)gmail.com

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preemptive apology..
by =JeffH 08 May '14

08 May '14

..for inadvertent double-post. mea culpa.

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Re: Observations of an Internet Middleman (Level3)
by =JeffH 08 May '14

08 May '14

> http://blog.level3.com/global-connectivity/observations-internet-middleman/ See also... Level 3 accuses five unnamed US ISPs of abusing their market power in peering http://gigaom.com/2014/05/05/level-3-accuses-five-unnamed-us-isps-of-abusin… "... I’d love to see Cogent, Google and other providers release their data next, so even if the FCC doesn’t want to pursue this, a growing cry of consumer outrage could push the agency to do something about a very real and difficult problem that’s crippling access to video content on 5 U.S. broadband networks. Level 3 didn’t name names, but based on the deals Netflix has signed and the complaints it has made about AT&T, I’m confident that AT&T, Verizon and Comcast are among the five. "

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NAT (PAT) log
by Pavel Dimow 08 May '14

08 May '14

Hello, as we are running out of ipv4 addresses we started to think of dual stack deployment in our network and that means we will soon need to have some NAT in place (NAT44).However I am curios to find how do you manage NAT logs? Considering the fact that we will need to use overload for pools I don't see any good solution how to track ip address leases. Any ideas?

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Re: US patent 5473599
by Henning Brauer 08 May '14

08 May '14

* Eygene Ryabinkin <rea(a)grid.kiae.ru> [2014-05-08 11:12]: > Henning, > Thu, May 08, 2014 at 09:35:00AM +0200, Henning Brauer wrote: > > * Blake Dunlap <ikiris(a)gmail.com> [2014-05-08 03:19]: > > > Except for that whole mac address thing, that crashes networks... > > this lie doesn't get any more true by repeating them over and over. > So, you insist that VRRP and CARP instances with the same VRID/VHID in > the same L2 segment will coexist peacefully? I had seen problems with > such setup, so if you can enlighten me how to overcome them (rather > than saying "you must choose different VRID/VHID") -- it will be very > good. you shouldn't see issues but log spam. I haven't seen anotehr issue and I haven't seen a single report claiming otherwise over the last 10 years either, minus the mentioned cisco 3600 "don't bother checking the version number field before parsing on" screwup. -- Henning Brauer, hb(a)bsws.de, henning(a)openbsd.org BS Web Services GmbH, AG Hamburg HRB 128289, http://bsws.de Full-Service ISP - Secure Hosting, Mail and DNS Services Dedicated Servers, Rootservers, VMs/PVS, Application Hosting

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Does Telus traffic shape their DSL or Fibre subscribers at all?
by Landon 08 May '14

08 May '14

Hello, Before I go chasing this down does Telus traffic shape their DSL or Fibre subscribers? Customer using 50Mbps fiber gets excellent speeds on speedtest.net but looks like http and ssh (scp) transfers are capped at 1MBps (not 1Mbps) for non-popular hosts but uncapped for popular hosts. Just a hunch. Thank you for reading. -- Landon Stewart <LandonStewart(a)Gmail.com>

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AWS Outage
by Blair Trosper 08 May '14

08 May '14

Can someone from AWS contact me off-list? You have an entire availability zone completely offline at us-east-1 that hasn't been detected, and it's been down for 20 minutes.

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Residential CPE suggestions
by Deepak Jain 07 May '14

07 May '14

Any recommendation for a residential CPE that supports dual SFP uplinks (WAN) with either a routing protocol or a resilient Ethernet solution? Ideally, LAN port should be 100/1000 CAT5. I've looking at Mikrotik, Draytek and others. Looking something in a lower three-digit price point. Otherwise I might have to do a pair of media converters on a copper switch/router that can do it (ugly!). Thanks in advance! DJ

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