- NANOG - lists.nanog.org

RE: Switch designed for mirroring tap ports
by Harry Hoffman 01 Mar '12

01 Mar '12

1 0

Cisco ME3400
by Holmes,David A 29 Feb '12

29 Feb '12

Anyone with advice on the ME3400 which some telcos use for Metro Ethernet Forum (MEF) services? Specifically looking for layer2 vs layer 3. At Layer 2 NNI/UNI vs dot1q qinq vs private VLANs. At Layer 3 multiple VRF CE/PE support. Specifically which connectivity options have been found to be most reliable and scalable. ________________________________ This communication, together with any attachments or embedded links, is for the sole use of the intended recipient(s) and may contain information that is confidential or legally protected. If you are not the intended recipient, you are hereby notified that any review, disclosure, copying, dissemination, distribution or use of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by return e-mail message and delete the original and all copies of the communication, along with any attachments or embedded links, from your system.

3 2

Re: [Outages-discussion] Recent outage in Australia affecting Telstra
by Jay Ashworth 29 Feb '12

29 Feb '12

----- Original Message ----- > From: "Gert Doering" <gert(a)greenie.muc.de> > > One of Telstra's downstream customers, a smaller ISP called Dodo, > > accidentally announced the global table to Telstra (or perhaps a very > > large portion of it.) Enough of it to cause major disruption. > > This is good. There is a chance that Telstra will learn from it, and > do proper customer-facing filters now. > > OTOH, there also is a chance that Telstra lawyers will just sue the > customer, and not change anything... Perhaps. I am not familiar with Australian jurisprudence, but the US there is the doctrine of Last Clear Chance[1]... and the work necessary on Telstra's part to avoid this problem is a) well known, b) arguably considered best practice for a company in their field, and c) not disproportionately onorous for them to have undertaken... so even if they sue, it's not at all a clear cut case for them to "win". Cheers, -- jra [1] https://en.wikipedia.org/wiki/Last_clear_chance -- Jay R. Ashworth Baylink jra(a)baylink.com Designer The Things I Think RFC 2100 Ashworth & Associates http://baylink.pitas.com 2000 Land Rover DII St Petersburg FL USA http://photo.imageinc.us +1 727 647 1274

3 2

Alaska peering
by Mehmet Akcin 29 Feb '12

29 Feb '12

Hi I have read there was a discussion in 2010 regarding an IX in Alaska and whether it existed. seems like the most logical point to get to Alaska is Seattle. Is that still the case? Is there any peering point in Alaska? please contact me offlist if you know some colo / Internet service provider there. thanks. mehmet

2 1

Time Warner Cable issues in Ohio ?
by Randy Carpenter 28 Feb '12

28 Feb '12

We're seeing some strange issues with our fiber connection to TWC in Ohio. Intermittent packet loss to/from some IPs. It gets as specific as from a certain IP outside our network, packets to a.b.c.10 are fine, but pings to a.b.c.50 (same subnet of same netblock) lose ~75% of the packets. Likewise, from one of our IPs, connections are fine to a particular remote host, but not to another host on the same network. Connections to/from some other IPs (and some whole networks) are totally fine. It almost seems that some piece of gear somewhere is barfing on packets that have a particular set of bits in the source and/or destination address. We have manually failed over to a backup connection, and are 100% fine now. I just want to see if anyone has seen anything similar, or has any info. I am on hold now waiting for someone at TWC. thanks, -Randy

3 2

Call for updates: Native IPv6 access providers
by Jeroen Massar 28 Feb '12

28 Feb '12

Hi Folks, I would like to get more organizations on the Native IPv6 list: http://www.sixxs.net/faq/connectivity/?faq=native Thus, if you have updates and also new entries, do not hesitate to forward them to info(a)sixxs.net. Please provide the list of countries that you are offering the service, the name of the organization/company, the website, the IPv6 prefixes involved, the type of link/technology and any kind of notes that may pertain to your offering. Of course, if you are in the planning phase and know that around date XYZ you are going to offer the service too this can be put in the Notes column too... Yes, this list does not include Datacenter offerings, as when you have a simple Ethernet/routed network it you should have been able to offer IPv6 ages ago... Thanks for the input! Greets, Jeroen

1 0

Re: Provider WAAS service for multiple MPLS VPN customers, possible?
by Frank Ho 28 Feb '12

28 Feb '12

Hi there, Just want to know if anybody out there has tried to put a pair of Cisco WAAS cards on two PEs to optimize the traffic of multiple VRFs between them ? Is that actually possible ? If it's possible, how does the WAAS module card forward the optimized traffic back to the correct VRF? Any hints or sample configurations are most appreciated. Frank.

3 2

Re: Programmers with network engineering skills
by Scott Weeks 28 Feb '12

28 Feb '12

--- george.herbert(a)gmail.com wrote: From: George Herbert <george.herbert(a)gmail.com> My understanding is that while primary and subcontractor companies can put people in the sponsoring organization's clearance granting queue, it takes so long to get someone through the queue that for high-level positions they essentially make having the clearance already a prerequisite. -------------------------------------- For TS maybe, but the Secret wasn't so bad. Also, it depends on how old you are. The younger you are the less they have to check. scott

1 0

do not filter your customers - part2
by fredrik danerklint 27 Feb '12

27 Feb '12

If we are gonna start to get somewhere with this issue, how about to make sure the routing/prefix databases is correct first? Please see: https://www.fredan.se/temp/prefixes.tar In that file you will find 'not_allowed_to_announce6' which contains about 2307 prefixes of ipv6 which is not in any routing/prefix databases OR the prefix that was submitted to it was wrong (probably the syntax of that prefix). Which bring us to the next question. Why on earth is it possible to submit a faulty prefix into a database today? Why is there (basically) no verification at all? Please take a look at 'databases_to_prefixes.sh' see what's going on (ok, some of the databases is probably for internal use only and we need to filter that - but it is so much more that needs to be filtered). Also in that file you will find 'prefixes4' and 'prefixes6' which contains all the prefixes after all the checking has been made (One prefix per line). These two files could be really useful for everybody in this community if someone (like the RIR:s) made those available to all of us, so we don't have to download all the databases, just the prefixes.... (And I know that AS52011 is announce to two prefixes which is not in the databases. Thank you very much). -- //fredan

1 0

Comcast / RCN Issues in Boston
by Hashem, Sherif Rakhaa 27 Feb '12

27 Feb '12

Are there any ongoing issues with Comcast and/or RCN in the Boston Metro Area? Thanks, Sherif Hashem Harvard Medical School | Network Operations 25 Shattuck Street | Gordon Hall Suite 500 | Boston, MA, 02115 d: (617)432-7534 | c: (617)999-7818 | f: (617)432-6804

2 1