7 Responses to “Topology: GNS3 CCENT Lab From Jeremy @ CiscoBlog”

1. cisconoshut
   June 19th, 2008 at 9:31 am

   let users know if they use the 3725 ios they may have issues if they do not config the vrouter for SDM by erasing the flash first, then perform CLI commands and wr mem. After this they need to perform a reload, this will make CLI start looping, go to GNS 3 > stop vrouter > start vrouter > go back to telnet program > hit [enter] at CLI and vrouter should start back up. After this they can perform SDM install from sdm.exe
   My experience and workaround, this only happened on Cisco 3725 c3725-adventerprisek9-mz.124-15.T5.bin so far.

2. Highspade
   September 14th, 2008 at 3:29 am

   I’m using the routers and IOS listed on the lab, one problem however is that SSH does not seem to be supported on this release, or am I missing something?

3. LBSources
   September 14th, 2008 at 4:24 pm

   Seems the IOS supports it to me .. You look at the configuring SSH on IOS routers help?

   http://www.cisco.com/en/US/tech/tk583/tk617/technologies_tech_note09186a00800949e2.shtml

   !— Step 1: Configure the hostname if you have not previously done so.

   hostname carter

   !— The aaa new-model command causes the local username and password on the router
   !— to be used in the absence of other AAA statements.

   aaa new-model
   username cisco password 0 cisco

   !— Step 2: Configure the DNS domain of the router.

   ip domain-name rtp.cisco.com

   !— Step 3: Generate an SSH key to be used with SSH.

   cry key generate rsa
   ip ssh time-out 60
   ip ssh authentication-retries 2

   !— Step 4: By default the vtys’ transport is Telnet. In this case,
   !— Telnet is disabled and only SSH is supported.

   line vty 0 4
   transport input SSH

   !— Instead of aaa new-model, you can use the login local command.

4. Highspade
   September 14th, 2008 at 5:34 pm

   yes… I have done all of that.

   however when I try to use “cry key generate rsa” the command is not found.

5. LBSources
   September 14th, 2008 at 5:44 pm

   What IOS are you using?

   Make sure that you are in the main section of configuration mode.. Meaning Router(config)#

   That’s the only way I have run into an issue..

6. Highspade
   September 14th, 2008 at 5:48 pm

   The IOS listed “c2600-i-mz.123-26″ is the IP feature set, I don’t think it supports ssh.

7. LBSources
   September 14th, 2008 at 6:27 pm

   Opps big mistake on my half .. I was testing with another lab totally.. Sorry! I would say put another IOS in there..

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