Hi Andy, Welcome to the list. I would like to suggest that rather than piggy backing onto an existing mail thread and asking a completely different topic that in the future you start a new one. The reason being is that I don't think everyone will open up a thread asking about SNMP unless they are interested, so you may miss out on their possible input about a topic like using GNS3/Dynamips.
Tools like GNS3/dynamips can certainly be helpful and there are people that use it as their main study aid but there are sometimes problems and limitations that are generally chalked up to occurring with the emulation platform. The volume 1 workbooks from IPExpert includes a .net topology that can be used. To use dynamips effectively you are going to have do a good amount of research and learning, searching the mailing list archives, CCIE blogs, the Dynamips forum http://7200emu.hacki.at/ and googling as well as fiddling around for yourself prior to asking for help should be your tools - depending on your circumstances this might be an added difficulty that you can do without and so the other alternatives of renting time on a rack or buying actual routers and switches for your home lab may be worth while - or even using a combination of the different methods depending on the technology you are using and the network complexity. In my personal circumstances I am using dynamips and real switches but if it gets to a particular point where I am not happy with how my environment is performing, I am prepared to change to rack rentals. My thoughts on the matter when I was first actually committing my personal effort towards the CCIE are in my blog http://noshut.blogspot.com/2010/02/is-having-home-lab-like-having-home-gym.html- I haven't sat the exam so I cant say it has categorically work for me and to be honest even if I purely used rack rentals, I think I would use dynamips anyway as its good to quickly bang something together and test if theres a particular problem case in your mind - and its something you can carry about with you and use on a laptop - not so each to lug a number of 2811s around with you :) Hope that's of some help - I have changed the message subject so hopefully you will also get some more opinions too. Cheers, Adam On Wed, Aug 25, 2010 at 6:32 AM, Lackraj, Andy <[email protected]> wrote: > Hey guys, > > Looking to do the IE and was wondering how many of you guys > have used GNS3 and how is it? Would it be adequate tool to prepare for the > lab? > > > > Any feedback is appreciated. > > > > Thx.. > > > ------------------------------ > > *From:* [email protected] [mailto: > [email protected]] *On Behalf Of *Adam Booth > *Sent:* Tuesday, August 24, 2010 3:23 AM > *To:* Taqdir Singh > *Cc:* [email protected] > *Subject:* Re: [OSL | CCIE_RS] snmp engine id > > > > Hi Taqdir, > > The engine id is used with the snmp user password to generate the MD5 > digests (the system will not store the passwords - just the engine id and > MD5, so if one or the other changes, you need to use the password and > regenerate the MD5 hash. RFC2274 discusses the user security model) > > Another thing I think was introduced with SNMPv3 but I'm pretty sure can > also be used with SNMP 2c is the use of SNMP Views. This basically allow > limiting which parts of the MIB tree that can be looked at for a particular > user or community, an example would to allow a managed customer to pull out > interface stats and cpu load but not see everything else... > > Cheers, > Adam > > On Tue, Aug 24, 2010 at 4:34 PM, Taqdir Singh <[email protected]> > wrote: > > *Hi All,* > > > > *In snmp v1 and v2c there was no concept of engine id and no > authentication and encryption* > > > > *so snmp v3 came with md5 authentication and encryption of packets.* > > > > *what is the purpose of snmp engine id local and remote in snmp v3? .... > default is also set...* > > > > -- > > -- > > Taqdir Singh > > /Networks > > > > Do today what others won't, so you can live tomorrow as others can't > > > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > > ------------------------------ > This message and any attachments are intended only for the use of the > addressee and may contain information that is privileged and confidential. > If the reader of the message is not the intended recipient or an authorized > representative of the intended recipient, you are hereby notified that any > dissemination of this communication is strictly prohibited. If you have > received this communication in error, notify the sender immediately by > return email and delete the message and any attachments from your system. >
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