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Re: OSPF vs ISIS - Which do you prefer & why?
by Joel M Snyder 10 Nov '16

10 Nov '16

>> Vendor support for IS-IS is quite limited - many options for OSPF. >Depends on the vendor. I think you misunderstood his point: it's not the knobs, but the vendors. Generally, when you're trying to integrate random crap into an otherwise well-structured network, you'll find OSPF available, but very rarely IS-IS. I run into this a lot in the security appliance space, where you want your security appliances to either learn or advertise routes internally (VPN tunnel reachability is a big reason for this), but also in devices such as load balancers and other middlebox cruft that occasionally needs to participate in routing advertisement/subscription. Some vendors grab random open source routing protocol code that includes everything and dump it into their boxes, usually accessible via an entirely separate configuration interface; this can include IS-IS, but these implementations rarely actually work as they are usually "check list" implemented for a specific RFP or customer and never get widely tested. The ones who actually care about making it work almost always include RIP and OSPF, with a few shout-outs to BGP. IS-IS (and OSPF v3) rarely makes the cut. In a world where you are doing well-controlled Cisco/Juniper/etc networks with fairly homogeneous code bases, the engineers get to have this discussion. When you have to link in devices for which routing is not their primary reason to exist, your options narrow very quickly. It's not ideal; that's just the way it is. jms -- Joel M Snyder, 1404 East Lind Road, Tucson, AZ, 85719 Senior Partner, Opus One Phone: +1 520 324 0494 jms(a)Opus1.COM http://www.opus1.com/jms

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JP Morgan contact
by Tom Storey 10 Nov '16

10 Nov '16

Would anyone from JP Morgan just so happen to be lurking on the list? If so, would you mind contacting me off-list regarding a reachability issue that some of my customers are experiencing with your website(s), specifically jpmpb.com. Thanks Tom

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Re: OSPF vs ISIS - Which do you prefer & why?
by John Kristoff 10 Nov '16

10 Nov '16

On Wed, 9 Nov 2016 17:12:24 +0000 Michael Bullut <main(a)kipsang.com> wrote: > Although there isn't distinct 1:1 argument, it's good we discuss it > here and figure out why one prefer one over the other *(consider a > huge flat network)**.* What say you ladies and gentlemen? I'm not sure it is worthy of an argument. I think I've only ever heard of anyone migrating from one to the other. That was AOL presenting their conversion from OSPF to IS-IS at NANOG a number of years ago: <https://www.nanog.org/meetings/abstract?id=686> The article you refer to more or less covers some of the major differences, largely academic these days. They are close enough alike now that it is probably just best to use what you know or already have running. When I migrated a RIPv2 network to OSPF I don't remember if I consciously choose it over IS-IS for any particular reason or, more likely, just went with it because it seemed like the IETF-preferred way to go. That would have been a dumb reason and later I kind of wish I had used IS-IS, because of the security isolation at layer 2 and relatively modest changes to support IPv6. But I wouldn't go through the trouble of changing it now. There is no compelling reason. I've considered leaving IPv4 on OSPF and putting IPv6 on IS-IS, but I'm not sure it really matters. It might be nice to get the experience on the resume, but that might not be a good justification to the network staff and management for a production network. John

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Re: OT: "Read Receipts"
by Larry Sheldon 10 Nov '16

10 Nov '16

I avoided the other off charter bait, but this is a red dot to me. On 11/6/2016 19:59, Patrick wrote: > Over at Language Hat, they are trying to establish the common > pronunciation of "read receipts" [1] > > To me, they've always just been "DSNs" or "MDNs", however, according to > rfc2298, their history goes back further. > > Of those who lived that history, and actually heard or said "read > receipts", did you pronounce "read" as "reed" or as "red"? I always pronounce them "More danged spam leaking thru the filters" but when I test-read (red) the question, R E A D came out "read (reed)". The burning questions we have to deal with these days, -- "Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid." --Albert Einstein From Larry's Cox account.

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OT: OpenSRS contact?
by Jessica Litwin 09 Nov '16

09 Nov '16

Apologies if this kind of thing isn't allowed but I'm at the end of my tether. If anyone who works at OpenSRS lurks here, can you contact me off-list? I have an issue support is unwilling or unable to fix and they don't seem too keen on escalating it. // jkl

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dilemmas
by Randy Bush 08 Nov '16

08 Nov '16

the users' dilemma: do you buy a mac today, or wait six month hoping they will fix X (for your particular X)? the sysadmins' dilemma: do you install today's critical update or wait a day until the next one is out before you reboot 50 servers?

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Omaha NE link costings
by Geordie Guy 08 Nov '16

08 Nov '16

Hi list, I'm a NOC lead for an Australia-based insurance company and I've been asked for quick indicative costing for a 100Mbps symmetrical link to an acquired business in Omaha. I've not dropped links into that area before and have no idea of rough costs. Could someone who's bought (or sold) an Internet link in Nebraska drop me a line off-list with what the cost was so I can give rough figures? Geordie

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patch, patch, patssh
by Randy Bush 07 Nov '16

07 Nov '16

while i did whine about patching, looking at logs makes me glad i do. the time from patch to active attack is decreasing alarmingly. randy

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OT: "Read Receipts"
by Patrick 07 Nov '16

07 Nov '16

Over at Language Hat, they are trying to establish the common pronunciation of "read receipts" [1] To me, they've always just been "DSNs" or "MDNs", however, according to rfc2298, their history goes back further. Of those who lived that history, and actually heard or said "read receipts", did you pronounce "read" as "reed" or as "red"? Thanks! Patrick [1] http://languagehat.com/read-receipts/

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buying a /24 ipv4
by Javier J 05 Nov '16

05 Nov '16

What are the going rates these days in north america. What are some good sites to get a block? In the process now of setting up an Org and AS with Arin for a client. Thanks in advance for your help. - Javier

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