Break Sequence For Putty
Break Sequence

In computer and video games, sequence breaking is the act of performing actions or obtaining items out of the intended linear order, or of skipping 'required' actions or items entirely.^[1] Sequence breaking is often used to beat a game unusually quickly (see speedrunning), to beat it while only completing a few objectives or obtaining a few items, to obtain useful items early in the game, to make the game more difficult, or to help push a game as far as possible in some other way.

History of the term[edit]

Though sequence breaking as a concept has existed almost since the inception of computer games complex enough to have sequential storylines, apparently the first documented action in a video game to be called a sequence break occurred in the NintendoGameCube game Metroid Prime, in a thread called 'Gravity Suit and Ice Beam before Thardus'.^[2] In the game, the rock monster Thardus was designed to be a required boss before the Gravity Suit and the Ice Beam could be obtained, hence the novelty of bypassing the boss while still obtaining the items, and thus saving time if the goal is to complete the game as quickly as possible. When a gamer named Steven Banks achieved this feat on January 18, 2003, he posted his discovery on the Metroid Prime message board on GameFAQs. The thread attracted a number of interested gamers, and the term sequence breaking was incidentally coined.^[3] The term has since grown in popularity and is now often applied to unintended shortcuts in any game.

Cisco packet tracer break key combination

Lotus kitty hybrid fitness watch. The term has become so pervasive that it has begun appearing in video games itself,^{[note 1]} and inspired by games such as Super Metroid, game designers may create their games with sequence breaking in mind.^[4]

Press Break on the terminal keyboard within 60 seconds of power up in order to put the router into ROMMON.If the break sequence does not work, refer to Standard Break Key Sequence Combinations During Password Recovery for other key combinations. Maybe simulating the break key sequence is an option. Complete these steps to simulate a break key sequence: Connect to the router with these terminal settings: 1200 baud rate. No flow control. You no longer see any output on your screen, and this is normal. Power cycle (switch off and then on) the router.

Notes[edit]

^Intelligent Systems. Super Paper Mario. Over the Flagpole: Surely you are cheating! You are exploiting a glitch! You are a sequence breaker!

References[edit]

^Carless, Simon (2004). Gaming Hacks. O'Reilly Media. ISBN0-596-00714-0.
^'Ice Beam + Gravity Suit before Thardus using Triple Jump'. metroid2002.com. 2003-01-27. Retrieved 2009-03-27.
^'Metroid Prime Sequence Breaking (v. 4.0) [Previously Ice+Grav before Thardus]'. metroid2002.com. 2003-02-11. Retrieved 2009-03-27.
^Priestman, Chris (2015-05-17). 'Going Weird And Wild With 3D Platformer Spooky Poo's Happy Hell'. Silicon Era.

Retrieved from 'https://en.wikipedia.org/w/index.php?title=Sequence_breaking&oldid=975719501'

For whatever historical reason (I used to know, but I’ve forgotten ) the break character for Cisco IOS command line is Ctrl-Shift-6 and X. Now, that is a pain to type and I often makes mistakes because it takes four fingers in coordinated fashion (lets face it, I’m not a world class athlete, and using four fingers is beyond my physical capability). So I have a habit of repeating it about five times …just to make sure.

Most importantly, when you are using a Cisco terminal server to access a router on a test bench (or study rack) and you hit the break sequence, the session snaps back to terminal server as if you had issued the command there. Annoying right ?

So now I have connected over to a neighboring router, and foolishly attempted to ping something that doesn’t exist:

Now I hit the break key because I’m impatient and

That right, I have shifted the console back to the first router.

Solution

My solution on my test bench has been to change the escape character on the routers (but not on the terminal server).

Works for Telnet/SSH too

A common practice when making routing changes is to telnet to the nearest router, then jump to to remote router and make the routing changes. This way, if the routing doesn’t work exactly right you still have a console session running.

This has the same problem. If you hit break to shut out a ping command, or interrupt a DNS lookup, your console will snap back to the original router.

Break Sequence For Putty

There are two ways to change the escape sequence / break character on Cisco IOS.

Change the break character for the current session

Break Sequence

This sequence changes it only for current SSH/Telnet session that you are using. Changes are lost when you exit the session.

See that? My personal choice is Ctrl-W because it’s easy to type and doesn’t conflict with much else in the ASCII characters

Change the break permanently

Changing it back

For those people who will rush off and test this on a live router (oh yes, Elizabeth, they do exist):

Generally, I wouldn’t recommend making this a default, because other people will have to work on your network eventually and this is the sort of thing that can have unexpected problems. But the settings for the current session is a neat trick and can save a lot of time in complex networks.

CCIE Mendicants may choose to use this also, but you need to be consistent about putting into your configuration across all devices. Might be a bit tricky.

Hope it’s useful.