Redundant Routes, BGP with MPLS provider

2012-08-31 Thread Tribble, Wesley
Hello all, I am an Network Operator working in an Enterprise environment with offices all over the country(mostly connected via MPLS). We are currently working towards building a Disaster Recovery Site that will host some of our vendor routers and provide the capability to access these

Re: Bird vs Quagga revisited

2012-08-31 Thread Laurent GUERBY
On Wed, 2012-08-29 at 16:39 +0100, Edward J. Dore wrote: MikroTik RouterOS is indeed based on Linux, however I believe they rolled their own MPLS stack. Hi, Does Mikrotik publish their modified Linux kernel source? Might be interesting to look at it. Laurent Last time I looked, the

Re: Bird vs Quagga revisited

2012-08-31 Thread Dan Shechter
Just for the records, OpenBSD got fully functional MPLS stack. HTH, Dan #13685 (RS/Sec/SP) The CCIE troubleshooting blog: http://dans-net.com Bring order to your Private VLAN network: http://marathon-networks.com On Fri, Aug 31, 2012 at 2:44 PM, Laurent GUERBY laur...@guerby.net wrote: On

MTU mismatch on one link

2012-08-31 Thread Tom Taylor
Has anyone run into a situation where the MTU at one end of a link was configured differently from the MTU at the other end? How did you catch it? In general, do you see any need for a debugging tool to be standardized to find such mismatches? Tom Taylor

Re: Bird vs Quagga revisited

2012-08-31 Thread Eduardo Schoedler
Seems that Netbsd have MPLS too, with the advantage to run in a jukebox. http://wiki.netbsd.org/users/kefren/mpls/ -- Eduardo Schoedler 2012/8/31 Dan Shechter dans...@gmail.com Just for the records, OpenBSD got fully functional MPLS stack. HTH, Dan #13685 (RS/Sec/SP) The CCIE

RE: MTU mismatch on one link

2012-08-31 Thread Paul Vinciguerra
You need to raise your MTU above that on the other side and do a ping size sweep. Unlike at Layer-3 when you can use set a DF bit and get back an ICMP error, at Layer-2 when you exceed the far side's MTU, the packets are silently dropped. Paul Vinciguerra CCIE# 10291 120 W Park Avenue, 

Re: MTU mismatch on one link

2012-08-31 Thread Justin M. Streiner
On Fri, 31 Aug 2012, Tom Taylor wrote: Has anyone run into a situation where the MTU at one end of a link was configured differently from the MTU at the other end? How did you catch it? In general, do you see any need for a debugging tool to be standardized to find such mismatches? Some

Re: MTU mismatch on one link

2012-08-31 Thread Mike A
On Fri, Aug 31, 2012 at 01:52:09PM +, Paul Vinciguerra wrote: You need to raise your MTU above that on the other side and do a ping size sweep. Unlike at Layer-3 when you can use set a DF bit and get back an ICMP error, at Layer-2 when you exceed the far side's MTU, the packets are

RE: MTU mismatch on one link

2012-08-31 Thread Blake Pfankuch
I was actually typing an email about this as well when this one showed up. I ran into this with a customer about 2 weeks back with a single are ospf implementation. They had one of their routers configured at MTU 1492 and I completely spaced this. Lost about a half an hour of my life to

Re: Redundant Routes, BGP with MPLS provider

2012-08-31 Thread Christopher Morrow
On Thu, Aug 30, 2012 at 2:17 PM, Tribble, Wesley wtrib...@sterneagee.com wrote: -Prepend the routes from the DR site so that they will have a longer AS-path than the Primary location yes

Color vision for network techs

2012-08-31 Thread Berry Mobley
Hello, Do any of you do any color vision screening in your interview process? How do those of you with color vision impairments compensate? I'd never considered this until I was in one of our facilities with my son (who has limited color vision) and we had a discussion about the LEDs. He

Re: Color vision for network techs

2012-08-31 Thread Steve Meuse
You might consider the ADA act before you go too far down this road. I'm no expert, but it may apply... -Steve On Fri, Aug 31, 2012 at 10:15 AM, Berry Mobley be...@gadsdenst.org wrote: Hello, Do any of you do any color vision screening in your interview process? How do those of you with

Re: MTU mismatch on one link

2012-08-31 Thread Dan White
On 08/31/12 09:30 -0400, Tom Taylor wrote: Has anyone run into a situation where the MTU at one end of a link was configured differently from the MTU at the other end? How did you catch it? In general, do you see any need for a debugging tool to be standardized to find such mismatches?

Re: Color vision for network techs

2012-08-31 Thread Philip Gladwin
Maybe giving them access to a colormeter? :) http://itunes.apple.com/us/app/colorimeter-digital-color/id371113568?mt=8 On Fri, Aug 31, 2012 at 10:23 AM, Steve Meuse sme...@mara.org wrote: You might consider the ADA act before you go too far down this road. I'm no expert, but it may apply...

Re: Color vision for network techs

2012-08-31 Thread William Astle
On 12-08-31 08:15 AM, Berry Mobley wrote: Hello, Do any of you do any color vision screening in your interview process? How do those of you with color vision impairments compensate? I'd never considered this until I was in one of our facilities with my son (who has limited color vision) and we

Re: MTU mismatch on one link

2012-08-31 Thread Andrew K.
Besides routing protocol convergence is there any service issues with running mismatched MTU? Assuming the packet flow does not exceed the smallest MTU value. On 8/31/2012 10:28 AM, Dan White wrote: On 08/31/12 09:30 -0400, Tom Taylor wrote: Has anyone run into a situation where the MTU at

Re: Color vision for network techs

2012-08-31 Thread telmnstr
When doing Cat5 connectors, a friend couldn't tell the orange versus brown (or was it green.) He found that with a red LED flashlight he could then tell. There are ways to work around things.

Re: MTU mismatch on one link

2012-08-31 Thread Justin M. Streiner
On Fri, 31 Aug 2012, Andrew K. wrote: Besides routing protocol convergence is there any service issues with running mismatched MTU? Assuming the packet flow does not exceed the smallest MTU value. Not really, but given the bursty nature of IP traffic, that's a very dubious assumption. In

Re: Color vision for network techs

2012-08-31 Thread Scott Morris
The ADA act does not allow people to have access to every single job regardless of their handicap. So, if something requires the ability to see certain colors, then that's a requirement. Scott On 8/31/12 10:30 AM, Philip Gladwin wrote: Maybe giving them access to a colormeter? :)

Re: Redundant Routes, BGP with MPLS provider

2012-08-31 Thread Walter Keen
Assuming the MPLS provider is a single company, and uses BGP at all sites to talk to your routers, I would simply set the MED (in cisco terms) to reflect what you desire. http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080094934.shtml This assumes however that the

Re: MTU mismatch on one link

2012-08-31 Thread Ben Bartsch
mturoute.exe works great http://www.elifulkerson.com/projects/mturoute.php On Fri, Aug 31, 2012 at 9:47 AM, Justin M. Streiner strei...@cluebyfour.org wrote: On Fri, 31 Aug 2012, Andrew K. wrote: Besides routing protocol convergence is there any service issues with running mismatched

Re: MTU mismatch on one link

2012-08-31 Thread Tom Taylor
My question was actually prompted by an issue that comes up with multicast routing, where either the underlying RIB is static or the unicast routing protocol managed to operate successfully. In any event, in some cases the PIM messages get large enough to be lost at layer 2. One proposal

Re: MTU mismatch on one link

2012-08-31 Thread Scott Helms
If you don't exceed the MTU ever then it shouldn't matter, but unless the MTUs are above what the protocol can handle on a specific link you probably will. Most commonly this happens on DSL links using PPPoE (the MTU needs to be at 1492 for the overhead) and it causes all kinds of odd

Re: MTU mismatch on one link

2012-08-31 Thread Tom Taylor
Looks good. On 31/08/2012 11:13 AM, Ben Bartsch wrote: mturoute.exe works great http://www.elifulkerson.com/projects/mturoute.php ...

Re: Color vision for network techs

2012-08-31 Thread Grzegorz Janoszka
On 31-08-12 16:15, Berry Mobley wrote: Do any of you do any color vision screening in your interview process? How do those of you with color vision impairments compensate? I'd never considered this until I was in one of our facilities with my son (who has limited color vision) and we had a

AS4565 contact

2012-08-31 Thread Dorn Hetzel
After emailing some of the usual addresses without any luck, I am wondering if anyone might be able to point me towards a contact for AS4565 who could assist me with getting the announcements of some prefixes they shouldn't be announcing cleaned up? Please feel free to email me directly with any

Re: Redundant Routes, BGP with MPLS provider

2012-08-31 Thread William Herrin
On Thu, Aug 30, 2012 at 2:17 PM, Tribble, Wesley wtrib...@sterneagee.com wrote: What is the best method to Instruct the provider's network to prefer the Primary Data Center routes over the DR site? Keep in mind that I am only peering with the provider over BGP and I have no visibility to the

Re: Redundant Routes, BGP with MPLS provider

2012-08-31 Thread Lee
On 8/30/12, Tribble, Wesley wtrib...@sterneagee.com wrote: Hello all, I am an Network Operator working in an Enterprise environment with offices all over the country(mostly connected via MPLS). We are currently working towards building a Disaster Recovery Site that will host some of our

RE: Redundant Routes, BGP with MPLS provider

2012-08-31 Thread Bill.Ingrum
I think having a GRE tunnel for the internal routing protocol is unnecessary. Can you explain the reasoning behind this? I understand the technical issue whereby GRE will allow multicast for EIGRP, OSPF, etc, but why not just redistribute into BGP? I work on a lot of MPLS CE routers, and in

Re: Redundant Routes, BGP with MPLS provider

2012-08-31 Thread Lee
On 8/31/12, bill.ing...@t-systems.com bill.ing...@t-systems.com wrote: I think having a GRE tunnel for the internal routing protocol is unnecessary. It might be, but we have a requirement for multicast over the wan so the GRE tunnels had to be there. Can you explain the reasoning behind

RE: Redundant Routes, BGP with MPLS provider

2012-08-31 Thread Bill.Ingrum
I work for an MPLS provider, so I guess I tend to trust them ;) Bill -Original Message- From: Lee [mailto:ler...@gmail.com] Sent: Friday, August 31, 2012 11:28 AM To: Ingrum, Bill Cc: wtrib...@sterneagee.com; nanog@nanog.org Subject: Re: Redundant Routes, BGP with MPLS provider On

Re: Redundant Routes, BGP with MPLS provider

2012-08-31 Thread Blake Dunlap
I'd prefer to trust / get the provider to do the right thing over losing the 40 mtu points and all the associated headache therein. -Blake On Fri, Aug 31, 2012 at 11:33 AM, bill.ing...@t-systems.com wrote: I work for an MPLS provider, so I guess I tend to trust them ;) Bill

Re: Redundant Routes, BGP with MPLS provider

2012-08-31 Thread PC
Options 1) Ask the provider if they have any traffic engineering communities available. Many of the large ones offer some. 2) Use BGP MED to influence the output path (works in most cases). 3) If that fails, use as-path pre-pending to influence the output path from the provider towards you. GRE

Re: MTU mismatch on one link

2012-08-31 Thread John Neiberger
On Fri, Aug 31, 2012 at 7:30 AM, Tom Taylor tom.taylor.s...@gmail.com wrote: Has anyone run into a situation where the MTU at one end of a link was configured differently from the MTU at the other end? How did you catch it? In general, do you see any need for a debugging tool to be

Re: Color vision for network techs

2012-08-31 Thread JC Dill
On 31/08/12 7:54 AM, Scott Morris wrote: The ADA act does not allow people to have access to every single job regardless of their handicap. So, if something requires the ability to see certain colors, then that's a requirement. Be careful about those requirements. The ADA requires employers

Re: Redundant Routes, BGP with MPLS provider

2012-08-31 Thread virendra rode
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 On 08/31/2012 09:21 AM, bill.ing...@t-systems.com wrote: I think having a GRE tunnel for the internal routing protocol is unnecessary. Can you explain the reasoning behind this? I understand the technical issue whereby GRE will allow multicast

Re: Color vision for network techs

2012-08-31 Thread valdis . kletnieks
On Fri, 31 Aug 2012 11:27:28 -0700, JC Dill said: So if you DO decide to test for color vision, make sure you know your rights and responsibilities for handling any employee or applicant who fails the test. There's something to be said for doing the test anyhow, and being prepared to deploy

91.201.64.0/22 hijacked?

2012-08-31 Thread Jeroen van Aart
The below email exchange may be of interest to some of you. The practical upshot is that it appears the 91.201.64.0/22 range was hijacked and should be included into the DROP list. As an interesting aside, quoting a friend: the original company (that performed dangerous waste utilization) may

Re: Color vision for network techs

2012-08-31 Thread Blake Dunlap
On Fri, Aug 31, 2012 at 1:33 PM, valdis.kletni...@vt.edu wrote: On Fri, 31 Aug 2012 11:27:28 -0700, JC Dill said: So if you DO decide to test for color vision, make sure you know your rights and responsibilities for handling any employee or applicant who fails the test. There's

Re: Color vision for network techs

2012-08-31 Thread Joel Maslak
On Aug 31, 2012, at 12:27 PM, JC Dill jcdill.li...@gmail.com wrote: So if you DO decide to test for color vision, make sure you know your rights and responsibilities for handling any employee or applicant who fails the test. IANAL - if you have any questions be sure to get advice from an

NANOG Website Redesign Project

2012-08-31 Thread Randy Epstein
Greetings NANOG community, NANOG is in the process of completely redeveloping its website (http://www.nanog.org) and is looking for feedback from the community and NANOG members. One of the primary goals of the redesign is to present a clean, yet functional and up to date website, improving

Re: Color vision for network techs

2012-08-31 Thread Betsy Schwartz
I installed monitoring software with different colored status dots, and discovered that we had three color-blind team members. After a pleasant hour's tweaking I ended up with green diamonds, red X's, purple squares, and yellow exclamation points (and on this particular application a mouse-over

Re: Color vision for network techs

2012-08-31 Thread Owen DeLong
On Aug 31, 2012, at 13:29 , Betsy Schwartz betsy.schwa...@gmail.com wrote: I installed monitoring software with different colored status dots, and discovered that we had three color-blind team members. After a pleasant hour's tweaking I ended up with green diamonds, red X's, purple squares,

Re: Color vision for network techs

2012-08-31 Thread David Barak
From: Betsy Schwartz betsy.schwa...@gmail.com   I ended up with green diamonds, red X's, purple squares, and yellow exclamation points (and on this particular application a mouse-over would also tell you the name of the color gif) Looked better for *everyone*. Is that the Lucky Charms

RE: Color vision for network techs

2012-08-31 Thread Matthew Black
Yeah, I had that trouble with the old Cabletron (Enterasys) network management software. About 6% of Euro-American males suffer from Deuteranopia. I cannot see the difference between dark green and dark red. Bright green and bright red are better. It was not possible to adjust the Cabletron

Re: Bird vs Quagga revisited

2012-08-31 Thread Edward Dore
They used to publish the source for their 2.4 kernel on routerboard.com (in fact, it's still available at http://routerboard.com/files/linux-2.4.31.zip), but I've not seen anything for the 2.6 kernel however and the routerboard.com site was redesigned a little while ago, seemingly without the

The Cidr Report

2012-08-31 Thread cidr-report
This report has been generated at Fri Aug 31 21:13:04 2012 AEST. The report analyses the BGP Routing Table of AS2.0 router and generates a report on aggregation potential within the table. Check http://www.cidr-report.org for a current version of this report. Recent Table History Date

BGP Update Report

2012-08-31 Thread cidr-report
BGP Update Report Interval: 23-Aug-12 -to- 30-Aug-12 (7 days) Observation Point: BGP Peering with AS131072 TOP 20 Unstable Origin AS Rank ASNUpds % Upds/PfxAS-Name 1 - AS840250659 2.2% 26.8 -- CORBINA-AS OJSC Vimpelcom 2 - AS982939453 1.7%

Re: Redundant Routes, BGP with MPLS provider

2012-08-31 Thread Lee
On 8/31/12, bill.ing...@t-systems.com bill.ing...@t-systems.com wrote: I work for an MPLS provider, so I guess I tend to trust them ;) For certain definitions of trust I would also. But.. Monday? I was told that $AGENCY had just completed an audit of our network and we had to change the exec

Re: Color vision for network techs

2012-08-31 Thread Jimmy Hess
On 8/31/12, Scott Morris s...@emanon.com wrote: Perhaps the more reasonable thing to do would be instead of administering vision tests; administer practical skill proficiency tests, so you will expose only issues that effect performance on tasks required for a job. Color vision is such an