a configure replace will of course not help when you loose your telnet connection to the box :-) Like Bill mentioned, the best thing to do on regular IOS is to use the 'reload in' command, which reloads your device after a specified amount of minutes. That way the startup-config becomes active again and you are able to log-in to the box. But your traffic will be hit, since the router really reloads (for the CCIE lab this doesn't matter of course).
IOS-XR indeed does have a similar rollback functionality like JUNOS has, which is pretty cool. IOS-XE doesn't have this configuration management, but it does run separate IOS processes, so I don't know if it's possible to let the device fail-over to the other IOS process when you loose your connection (also with a specified amount of minutes for example). -- Regards, Rick Mur CCIE2 #21946 (R&S / Service Provider) Sr. Support Engineer – IPexpert, Inc. URL: http://www.IPexpert.com On 18 jan 2010, at 23:27, Kaddy Kaddy wrote: > Hi > > IOS-XE ASR1K has the below given command > > configure replace bootflash:<file name> > > Regards > Kedar. > > On Mon, Jan 18, 2010 at 6:53 PM, Taqdir Singh <[email protected]> wrote: > Hi Friends > > Like in case of juniper we have rollback option, that is configuration will > automatically roll back after certain period of time what we mentioned even > if loose telnet access. > > I know in cisco we have below command > configure replace nvram:startup-config > > But if loose telnet access after some misconfiguration we wont be able to > type it without console. > > So like juniper is there any option in cisco that we can give prior doing any > configuration change , so that even if we loose telnet access it will roll > back automatically ? > > -- > TAQDIR SINGH > Network Engineering > (+91) 991.170.9496 | (+91) 801.041.5988 > > One who asks is a fool for a moment, one who doesn't ask remains fool for ever > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com
_______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
