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Scheduled Reload

Netstudent

How many of you guys configure a scheduled reload when working on remote routers? My thoughts are, if you configure soemthing by accident that disables your in band connection, or locks you out, and if you schedule a reload before the statements are issued, then any bad changes will be wiped out with a reload. I never have, but I think I will start in the future. Then if no anomalous events occur then you can go in and just do a NO in front of the "reload in/at" statement.

So do you guys make that a normal practice on remote critical systems?

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Comments

JohnDouglas

Wouldn't you always have a connection via a console server?

Netstudent

Not if the router is at a remote location and you are using an in-band connection to access the device. I guess nobody does this. A console or Terminal server you speak of would be an out-of-band connection to the device.

dtlokee

I have said it in my classes! It is not a common practice but it can be done. I guess if you don't make any mistakes it's not needed, but a scheduled reload to save your butt can be good (during off hours). If everything goes as planned you just use a "reload cancel" to stop it.

Paul Boz

I thought this was standard.

Just schedule a reload for like five minutes after you commit a config change. If the command takes and you don't lose access to the router cancel the reload. If it does hurt you you just saved yourself a massive headache.

It's a 20 second process that can save you hours if not days of work. Do it whenever you do any sort of access-inhibiting config modification.

Hell I do it out of habit and I manage most of my devices out of band.

Netstudent

Sounds good..Thanks guys

mikej412

Netstudent wrote:

So do you guys make that a normal practice on remote critical systems?

I do it on all systems where there is no one on site (or nearby) to fix any mistake I make.

I'd rather risk a small outage of a router reboot if I lose track of the time or get distracted, then a longer outage due to a mistake and have to wait while someone gets (woken up,) dispatched and travels to the site.

I did make a mistake once back in '88, but got lucky and got a hold of a janitor and talked him through the steps to restore my remote access (UNIX system via Modem). That was enough to make me careful -- to this day -- when I do anything remotely.

Netstudent

Back in 88

You must be really good!

r_durant

...a janitor

You "MUST" be really good!!

JohnDouglas

Netstudent wrote:

Not if the router is at a remote location and you are using an in-band connection to access the device. I guess nobody does this. A console or Terminal server you speak of would be an out-of-band connection to the device.

ah, like on a customer site. i hadn't thought of that. i'll see what the customer config guys do.
auto reload sounds good.

lol at the mistake back in 88!

Aquabat [banned]

i worked on a 3550 one time, i was putting login local on teh vty lines and i guess i did a command out of order or something. and i had to drive on-site to console in and fix it .

but no i wouldn't do the schedule reload thing because knowing me i would forget to reload cancel and then i'd get a phone call

Netwurk

Here's an example of a scheduled reload:

Let's say you need to make a change on a router that you are working on remotely. You issue a delayed reload command in case your actions disconnect you from the router.

Rtr2620#reload in 10

System configuration has been modified. Save? [yes/no]: n
Reload scheduled for 16:56:06 EST Thu Jan 31 2008 (in 10 minutes) by vty0 (172.2
7.183.120)
Proceed with reload? [confirm]
Rtr2620#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Rtr2620(config)#int ser 0/0
Rtr2620(config-if)#shut
Rtr2620(config-if)#^Z
Rtr2620#

***
*** --- SHUTDOWN in 0:05:00 ---
***

Rtr2620#reload cancel
Rtr2620#

***
*** --- SHUTDOWN ABORTED ---
***

Jan 31 21:51:45.863: %SYS-5-SCHEDULED_RELOAD_CANCELLED: Scheduled reload cancel
led at 16:51:45 EST Thu Jan 31 2008
Rtr2620#

Here's what happened:

1. A reload was scheduled to occur in ten minutes
2. You choose not to save your changes in case they prevent you from reconnecting
3. You shutdown a problem serial port, knowing it might disconnect you
4. You decide to wait five minutes to see if your connection is stable. If you're doing this from home, now would be a good time to go get a beer. If you're at work, grab a cup of coffee
5. You come back and see the 5:00 minute warning. Looks like the change is okay
6. Now you can troubleshoot the bad port, confident that it will not affect your connection
7. You issue the "reload cancel" command and decide it's time for another beer (coffee)

elementour

i use the reload function before i make any changes and its saved me before. i tend to set the time to about 3 mins as i find its long enough to make the changes i need and check the config and cancel the reload if all is well but not too long to wait for it to reload if i do make a mistake. my heart is in my mouth when i paste my 'script' in and realise i've not added the reload command

larkspur

Everytime I had to upgrade a circuit or working with routing.

just to echo everyone here it is a lifesaver. works well for ios switches too!!!!

bmauro

I use this all the time as well with remote sites - but for a different reason.

New installations sometimes are installed ahead of schedule - which causes issue with other "new site" procedures. So I routinely have to shut down the remote site for days at a time. So I find it handy to just do the following:

conf t
reload in 48:00 (or however many days I've been told)
int serial 0/0/0
shut

Basically it kills the connection from the remote site and as long as I didnt save the config, the router will reboot in 2 days and with the serial connection up and up.

Handy

APA

+1!!

Definately use the reload in 5 command...... Not that any of us make mistakes though right???

networker050184

I never make mistakes

Actually I locked myself out of a switch at a remote site last week. I was doing some VLAN maps and then....... DOH!!!! I just had the guy on site reset it. Told him it must of just locked up