Archive for December, 2009

mpls image for cisco 2500

Hello all,

Does anybody have experimental IOS for Cisco 2500:

c2500-js-l.20oct2001

c2500-p-l.20oct2001

c2500-p-l.tag

(MPLS features and so on for 2500 routers – I have lost my NAS server with FTP and TFTP directory because of disc failure).

It will be really helpfull if anybody can share, IOSes were available at ftp://ftp-eng.cisco.com/rraszuk/specials but there is no more such a directory.

Thank you in advance, Adrian

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IPv6 NAT-PT

Hi,

I have a requirement to test a server using it’s ipv6 interface for DNS querying. The DNS server is ipv4 and has mostly ipv4 data and A records. This seemed like a good opportunity to try out NAT-PT.

It seems that there is a built-in ALG which recognizes the DNS and converts A queries to AAAA. Some packets are converted and some are (silently) dropped. Is there some way to disable the ALG or another method of some simple static ipv6ipv4 Natting on the transport layer only?

Router 2851 12.4T

Thnks Rich

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Dynamips for the NEW Blueprint

Why not use a 2611 with 256MB Ram and 48MB Flash with 12.4T code?

Ian

> i prefer 3745 bit stable with 12T line … > > On Wed, Nov 25, 2009 at 11:01 AM, Ramanpreet Singh > > > > i am still using 3640 for the new bluepint and it works > > fine with MPLS and all. > > > > On Tue, Nov 24, 2009 at 11:29 PM, Jitendra Anbu > > wrote: > > > Hi All, > > > > > > Does anyone know whether there is a new Dynamips (or > > > Dynamips and real switches) setup for the new > > blueprint by any of the vendors? What I am looking > > > for is what router type and IOS will be suited for a > > Dynamips LAB setup. I > > > used 3640 for the previous blueprint with Enterprise > > edition. > > > > Cheers, > > > > > > Jit > > > > > > > > > Blogs and organic groups at http://www.ccie.net > > > > > > > __________________________________________________________ > > > _____________ Subscription information may be found > > > at: http://www.groupstudy.com/list/CCIELab.html > > > > > > Blogs and organic groups at http://www.ccie.net > > > > > __________________________________________________________ > > _____________ Subscription information may be found at: > > http://www.groupstudy.com/list/CCIELab.html > > > > > > > > > > > > > > > > > > > — > Tharindu Rukshan Bamunuarachchi > > > Blogs and organic groups at http://www.ccie.net > > __________________________________________________________ > _____________ Subscription information may be found at: > http://www.groupstudy.com/list/CCIELab.html > > > > > > >

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ASA in GNS3 0.7 on Windows 7

Hi,

Can someone please help me,I have installed gns3 0.7 on Windows 7 and everything is working fine except the ASA.

Can someone help me with the step by step guide on this,each time I try to start the ASA device,the error message I get is this “could not communicate with qemuwrapper server localhost. It may have crash.Check the qemuwrapper server output”.

Thanks in advance.

Ojo Oluwaseyi O.

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SIP vs H323 thoughts

I guess CCIE level needs understanding of concepts, OEQs seem to be headed that way, and I always feel bad when something does not “click” right

It used to be the case that H323 vs. SIP was kind of Tacacs vs Radius. And like that case, market has decided the way.

But before the direction was settled, cisco (through documentation and or course material) that SIP was bound to be more “heavy” on resources because as it is a text based protocol, you need to do parsing at the ends. This is from a programming point of view as sound as saying that OSPF is “heavy” because you have to run the SPF algo. I don’t really buy the argument but it has some grounds.

Now, cisco is pushing the SIP way, and in so doing, now SIP performs better than H.323, even for native H.323 solutions like CVP. It actually says that CVP servers perform more than 50% better when using SIP instead of H.323, as denoted by a server supporting 500 ports when using H.323 but 850 on SIP.

Any idea why is that so ? Let alone SIP things like requiring MTPs on trunks sometimes, and other oddities like having to reinvent routing (CUP supports static routes only)…

-Carlos

building my own R&S lab

How much onboard or flash ram would I need for the 3560’s & 2811’s ?

On Wed, Dec 30, 2009 at 8:52 PM, Majonestx wrote:

> You need to buy 3725’s with maxed out dram at 256. This will allow you to > run 12.4T. > > > > Sent from my iPhone > > > On Dec 30, 2009, at 8:25 PM, Anbu wrote: > > Thanks, if budget is not allowing to go through with 2811 , What is the >> recommendation to replace those 2811 to match the version 4 requirement ? >> >> Regards, >> Anbu >> >> On Wed, Dec 30, 2009 at 12:53 AM, Tyson Scott >> wrote: >> >> Scuba, >>> >>> To build their rack you will need >>> 6 2811’s >>> 6 WIC-2T’s >>> 8 DB60 to smart-serial back to backs >>> 2 smart serial to smart-serial back to backs >>> 4 3560’s >>> 1 older router that will support 2 or more NM modules. I think a 3640 is >>> a >>> perfect router >>> 2 NM-4T’s >>> 1 NM-2E (This is if you want to dual purpose the frame-switch for a >>> backbone router) >>> Lots of 7 ft patch cables. >>> >>> You can then use the 3640 as your frame-switch and your backbone routers. >>> You can use VRF’s on the 3640 to make it appear as several backbone >>> routers. >>> >>> That should be all the equipment you need. >>> >>> I am surprised you are not getting direction from NMC as to how to >>> configure >>> their topology. But you will need to contact them to get their >>> frame-relay >>> switch configuration and the BB router configurations. Good Luck in your >>> studies. >>> >>> Regards, >>> >>> Tyson Scott – CCIE #13513 R&S, Security, and SP >>> Technical Instructor – IPexpert, Inc. >>> Mailto: tscott@ipexpert.com >>> Telephone: +1.810.326.1444, ext. 208 >>> >>> >>> >>> —–Original Message—– >>> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of >>> scuba diver >>> Sent: Tuesday, December 29, 2009 9:33 AM >>> To: Iwan Hoogendoorn; Cisco certification >>> Subject: Re: building my own R&S lab >>> >>> I want to buy 4 3560’s and I want to buy 6 2811’s with wic-2t’s. Can I >>> get >>> the wic-2t’s with rj45 ports so I can use cat 6 to plug them into 3560’s >>> ? >>> If not, how can I connect them to the 3560’s ? Do I have to have smart >>> serial cables ? >>> Scuba >>> >>> On Tue, Dec 29, 2009 at 8:01 AM, scuba diver >>> wrote: >>> >>> I have NMC Cisco 360 materials and 10k to blow on equipment >>>> >>>> >>>> On Tue, Dec 29, 2009 at 7:25 AM, Iwan Hoogendoorn >>>> >>> wrote: >>> >>>> >>>> What workbook are you going to study? >>>>> If you just want a lab to test certain technologies/topics I would >>>>> keep is small… >>>>> >>>>> I would even advise dynamips/GNS3 >>>>> >>>>> If you als going to study a specific workbook (of a vendor) you can >>>>> look into those workbooks … >>>>> They usually specify what equipment is used … >>>>> >>>>> — >>>>> Regards, >>>>> >>>>> Iwan Hoogendoorn >>>>> CCIE #13084 (R&S / Security / SP) >>>>> Sr. Support Engineer IPexpert, Inc. >>>>> URL: http://www.IPexpert.com >>>>> >>>>> On Mon, Dec 28, 2009 at 10:11 PM, scuba diver >>>>> wrote: >>>>> >>>>>> I want to build my own R&S lab. What equipment do I need ? >>>>>> >>>>>> Thanks >>>>>> >>>>>> Scuba >>>>>> >>>>>> >>>>>> Blogs and organic groups at http://www.ccie.net >>>>>> >>>>>> >>>>>> _______________________________________________________________________ >>> >> > > Subscription information may be found at: >>>>>> http://www.groupstudy.com/list/CCIELab.html >>>>>> >>>>> >>> >>> Blogs and organic groups at http://www.ccie.net >>> >>> _______________________________________________________________________ >>> >> > > Subscription information may be found at: >>> http://www.groupstudy.com/list/CCIELab.html >>> >>> >>> Blogs and organic groups at http://www.ccie.net >>> >>> _______________________________________________________________________ >>> >> > > Subscription information may be found at: >>> http://www.groupstudy.com/list/CCIELab.html >>> >> >> >> Blogs and organic groups at http://www.ccie.net >> >> _______________________________________________________________________ >> > > > Subscription information may be found at: >> http://www.groupstudy.com/list/CCIELab.html >> > > > Blogs and organic groups at http://www.ccie.net > > _______________________________________________________________________ > Subscription information may be found at: > http://www.groupstudy.com/list/CCIELab.html

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Whats new for the coming year?

Narbik what new do you have coming ?

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building my own R&S lab

I do all my practice with Dynamips on Linux plus 4 x 3550 plus one access server. 3550s are running at about 200-250USD on Ebay, a huge difference compared to 3560s. I may rent a rack with 3560 a month before the lab to practice specific 3560s features. I had full hardware lab but switched to Dynamips. I find it just better than real routers, for practice off course. I specifically like the possibility to save initial configs and work-in-progress so I can re-start any lab in seconds…

I am not sure I am getting your question about troubleshooting experience… do you mean real life experience compared to rack experience? Well, my humble personal estimate is that most ccie candidates do not have enough troubleshooting experience anyway unless you support many clients who call you only when something goes wrong. I suggest you practice with troubleshooting labs. Narbik has one free on his site and you can purchase more… I personally did not try it yet so cannot comment.

So What’s Happening with Narbik Kocharians?

OH Brother!

Is this a CCIE studygroup?

On Thu, Dec 31, 2009 at 9:59 AM, Marko Milivojevic wrote:

> On Wed, Dec 30, 2009 at 19:29, wrote: > > And narbik is the human form of that. > > Others with numbers are superhuman, then? Well, thanks for the > compliment – much appreciated! > > — > Marko Milivojevic – CCIE #18427 > Senior Technical Instructor – IPexpert > > Mailto: markom@ipexpert.com > Telephone: +1.810.326.1444 > Fax: +1.810.454.0130 > Community: http://www.ipexpert.com/communities > > > Blogs and organic groups at http://www.ccie.net > > _______________________________________________________________________ > Subscription information may be found at: > http://www.groupstudy.com/list/CCIELab.html

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building my own R&S lab

Thanks to all,

Yes I have used Dynamip for most of my practice and Rented From IE Rack rentals and attempted last February unfortunately couldn’t pass because of Open Ended Questions and QoS , Multicast section. Now planing to start again the preparation again for Version4. i have decided to buy anyhow four 3560 Switches and thinking do i want to buy routers or can i manage again with dynampis for routing part ? Only my consideration is if i have the real lab only , can get enough troubleshooting experience to go through version 4.

Regards, Anbu

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