Dynagen 0.11.0 out now

It turns out I am a little slow on the uptake! Dynagen 0.11.0 is now available.

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CCENT configs for Dynamips

I have done a fair bit of research into this and I am pretty sure that I have the configurations that are applied to the core routers and switches pretty well nailed! These files are provided as is with no express or implied warranty. Invurted.com is not responsible for any damage caused by using these files.

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CCENT Test Lab

With considerable help from Arden (http://www.ardenpackeer.com), I could have this sweet virtual Cisco lab up and running. Read the rest of this entry »

Dynagen process limit

By default, Windows has a 2 GB per process limit that (after including the memory used by the virtual router RAM, cygwin, libraries, and “scratch space”) you are bumping up against. 32-bit Linux has a 3 GB per process limit by default.

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Dynagen Install Guide (Dynamips for Dummies)

Okay, I admit it; I’m a Dynagen n00b! It’s sort of embarrassing, so to help save anyone the shame, I figure that I will document the process. To that end, I am planning to write a series of articles about my experiences with Dynagen.

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Dynagen doesn’t save VLAN database after reset

I notice in the latest dynamips version 0.2.8-RC1 that flash filesystem is not working like before. If I perform and “erase flash” then reboot.. the flash file system comes back unformatted. Usually after performing an erase flash on the 3600, the size would change. This is not reflected on the files in the working directory.

This means that vlans are not stored across reboots in the 3640 routers with the switch module.

 The work around is thus:

(config)#vtp file nvram:vlan.dat
Setting device to store VLAN database at filename nvram:vlan.dat.
#dir nvram:
Directory of nvram:/
123  -rw-        1720       startup-config
124  ----          24       private-config
  1  -rw-           0       Index-table
  2  -rw-         720       vlan.dat

Dynagen virtual Cisco

Dynagen is a front-end for use with the Dynamips Cisco router emulator. Read the rest of this entry »