C1700 IOS images start once and then fail to boot on second boot.

[lachlanjholmes]

Hey Jeremy,

Just a quick one.

I drop in a c1721 router and it will boot first time and then the second time it wont boot and gives the message listed at the very bottom.

Debug from the GNS3 Gui

GNS3 management console. Running GNS3 Early Release (ER) version 1.0a7.dev3 on linux.
Copyright (c) 2006-2014 GNS3 Project.

=> debug 7
Activating debugging
=> creating node <class 'gns3.modules.dynamips.nodes.c1700.C1700'>
adding server 127.0.0.1:8000 to Dynamips module
sending Dynamips settings to server 127.0.0.1:8000
router c1700 is being created
configuring node Router c1700
router setting up and updating ram from '64' to '96'
router setting up and updating name from '' to 'R1'
router setting up and updating aux from 'None' to '2501'
router setting up and updating mac_addr from 'None' to 'd001.7ab1.0000'
router setting up and updating console from 'None' to '2001'
router setting up and updating image from '' to '/home/lachlan/GNS3/images/IOS/c1700-advipservicesk9-mz.124-25a.image'
opening configuration file: .python-eggs/gns3_gui-1.0a7.dev3-py3.4.egg-tmp/gns3/configs/ios_base_startup-config.txt
opening configuration file: .python-eggs/gns3_gui-1.0a7.dev3-py3.4.egg-tmp/gns3/configs/ios_base_private-config.txt
R1: updating idlepc from '' to '0x80644f64'
R1: updating private_config from '' to 'configs/i1_private-config.cfg'
R1: updating startup_config from '' to 'configs/i1_startup-config.cfg'
router R1 has been created
R1 has started
starting telnet console "konsole --new-tab -p tabtitle=R1 -e telnet 127.0.0.1 2001"
R1 has stopped
R1 has started
starting telnet console "konsole --new-tab -p tabtitle=R1 -e telnet 127.0.0.1 2001"

the console of the router after the second boot in the same session

Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
Connected to Dynamips VM "R1" (ID 1, type c1700) - Console port
Press ENTER to get the prompt.
ROMMON emulation microcode.

                           Launching IOS image at 0x80008000...

[ghost]

I had this same issue except I was using the 1751. On the 1700 routers if you change the memory to 128 Mb instead of thee default 64Mb the router will boot. Not sure if it is an issue with the amount of RAM assigned to the router during the initialization process.

[lachlanjholmes]

@silenveritas The router does boot but only once..

[grossmj]

The problems lies in Dynamips. An issue has been opened there: GNS3/dynamips#54

Current workaround is to deactivate the "Sparse Memory support" (right click on your router -> Advanced tab -> untick "Enable sparse memory support).