January 2016 - NANOG - lists.nanog.org

common checks performed when passing on an IPv4 PA allocation from one end-customer to another
by Martin T 23 Feb '16

23 Feb '16

Hi, when one end-customer has been using for example /24 IPv4 allocation for a while and returns this(for example changes an ISP) to LIR, then are there some good practices before handing out this same /24 to a new customer? I guess LIR should: 1) remove all the DNS PTR records, classless of classful delegations 2) check if some of the IP addresses are in DNSBL(maybe the previous customer was a spammer). Example with 93.184.216.0/24: $ for ip in {0..255}.216.184.93;\ > do for addr in \ > cbl.abuseat.org \ > dnsbl.inps.de \ > no-more-funn.moensted.dk \ > dnsbl.sorbs.net \ > bl.spamcannibal.org \ > bl.spamcop.net \ > psbl.surriel.com \ > dnsrbl.swinog.ch; \ > do dig @8.8.8.8 "$ip"."$addr" +short | grep -q "^127.0.0." && \ > echo "DNSBL-Alarm: $ip is listed on $addr"; done; done $ Anything else? regards, Martin

2 4

Cisco's IOS-XE and PCEP implementation
by Mohamed Kamal 20 Feb '16

20 Feb '16

I'm wondering, why there is no MPLS-TE PCE support for IOS-XE till now?! Should I be getting a 9k/CRS on the edge to implement an automatic tool to build MPLS-TE tunnels! -- Mohamed Kamal Core Network Sr. Engineer

4 8

Arista optics
by Alex Forster 07 Feb '16

07 Feb '16

Hi everyone! I'm trying to get buy-in to go with Arista for some new infrastructure, but the Arista optics just aren't in the ballpark for us at "proof-of-concept" volume. In Cisco-land, we've had great success using Finisar optics, and they've been an easy "sell" to management since many Cisco optics are just rebranded Finisar's. The relevant Arista optics I'm looking at are QSFP-100G-LR4 and SFP-10G-LR. Does anybody know what supplier(s) manufacture these optics for Arista? Alternatively, does anyone have any experience using third-party comparable optics (especially the 100G) in the battlefield? Since optics sales are pretty cut-throat, I do ask that you disclose if you have a financial interest in any of your suggestions. Thanks! Alex Forster

13 13

Devices with only USB console port - Need a Console Server Solution
by Erik Sundberg 03 Feb '16

03 Feb '16

We have one of these nice new and fancy Cisco ASR920-24SZ, just realized it doesn't have an RJ45 Console port only USB. When we deploy devices at our pop we wire the console port to a terminal\console server, well that doesn't work for a usb console device. So what is everyone doing for out of band management via the console when it's a usb only device? Is there something I am missing? Is there a console server for USB? Does cisco make an USB to RJ45 Jack adapter? ________________________________ CONFIDENTIALITY NOTICE: This e-mail transmission, and any documents, files or previous e-mail messages attached to it may contain confidential information that is legally privileged. If you are not the intended recipient, or a person responsible for delivering it to the intended recipient, you are hereby notified that any disclosure, copying, distribution or use of any of the information contained in or attached to this transmission is STRICTLY PROHIBITED. If you have received this transmission in error please notify the sender immediately by replying to this e-mail. You must destroy the original transmission and its attachments without reading or saving in any manner. Thank you.

16 23

Team Cymru BGP bogon status ???
by Matthew Huff 01 Feb '16

01 Feb '16

Starting around 7:17 am EST, we lost our IPv4 & IPv6 BGP connections to Cymru. We have two connections in both IPv4 and IPv6 on both of our two routers. On each router one connection is stuck in active, the other providing 0 prefixes. I can’t get to http://www.team-cymru.org from either work or home. Anyone know what’s up?

8 9

Dear Windstream engineers
by George Skorup 01 Feb '16

01 Feb '16

Why doesn't Windstream have RTBH for their BGP customers? It cannot be impossible to implement.

5 5

small automatic transfer switches
by Chuck Anderson 30 Jan '16

30 Jan '16

Does anyone have any recommendations for a small, cheap, reliable ATS? (I know, pick two, you can't have all three) I'm looking for something to power one or two 120V out-of-band network device(s) in each location with a single power supply each, much less than 10 amps total, with two 120v input cords. The primary input cord will go to the UPS and the other directly to a wall outlet to be able to access the UPS when if fails to turn on after the power returns :-) I found the usual suspects, APC, TrippLite, ServerTech, etc. but they are mostly 8 or more outlets and upwards of $300-$900 each. I also found this neat one, Zonit uATS, which is a small box that piggybacks onto the powered device's C14 input and has two power cords coming out of it. But it seems to cost just as much as the bigger ones...

14 15

Re: Equipment Supporting 2.5gbps and 5gbps
by Brandon Butterworth 30 Jan '16

30 Jan '16

> The standard 24 or 48 port SFP+ switch is 10 times the price of the > equivalent switch with 24 or 48 port SFP. The same is true for the optics. I never saw many cheap 48port 1U sfp switches as people bought copper at that speed so the ones that were around were relatively expensive. With 10G it's been the opposite, nobody was using copper so SFP+ is cheap. Only recently has copper 10G started to become common, a bit too late to be worth bothering with now and as there are no copper SFP+ Having new servers switch to copper instead of sfp is a nuisance Optic price depends on volume, 10G are cheap now so 1G being the old line that's about to become rare are dirt cheap. > 2.5 and 4 Gbit/s SFP modules are available and cheap. It is just that > ethernet ports will not take advantage of the extra speed. Yes, they likely need new chips so may end up closer to 10G switch price > It would be an improvement if we can get 2.5 or 4 Gbit/s ethernet on SFP > instead of paying for an all SFP+ switch. I disagree, stick to 10G get the volume up and hence price down. Splitting the market enables the market to be tiered to keep some prices higher than they might have been. Same needs to happen with mm fibre, stop buying that junk and make SM even cheaper. brandon

6 5

Equipment Supporting 2.5gbps and 5gbps
by Justin Krejci 30 Jan '16

30 Jan '16

I've a couple 10 port Cisco switches that support 2.5 and 5gbps over cat5e, just wondering if there are any other vendors out there with offerings that support these newer ethernet speeds. Supporting cat5e for these multi-gig speeds is a real boon in many circumstances given the wide popularity of it in many buildings. Does anyone have any experience with or knowledge of other products, switches in particular, supporting 2.5 and 5 gbps? Thanks.

16 18

Re: T-Mobile's Binge On violates net neutrality, says Stanford report
by nanog-isp＠mail.com 29 Jan '16

29 Jan '16

> In a new report published today - and filed to the FCC, as well > - van Schewick says that Binge on "violates key net neutrality > principles" and "is likely to violate the FCC's general conduct > rule." Sure it does, but will anything ever be done about it? Jared

1 0