Q: How do I break the boot sequence on a Catalyst 3850
Should be a pretty simple question, but I can't seem to find an answer and I've tried all of the old tricks.
What I want to know is simple, using a terminal emulator (or in my case a Cisco router as a terminal server) how can I issue a 'break' to interrupt the boot process of a Cat 3850?
I know that if I have physical access to the switch, you just hold the 'mode' button down until the boot process is interrupted, but what if you don't have physical access?
I've changed the ENABLE_BREAK variable to 1 (using the boot enable-break switch 1 command in IOSXE), but I still can't seem to interrupt the boot process without physical access.
Is there something obvious I'm missing here?
If I dont have access to the mode button on front, I prefer to just change the "manual boot" variable to yes. Dont forget to change it back once you are done
::Example
Switch#show boot system switch 1
Switch 1
Current Boot Variables:
BOOT variable does not exist
Boot Variables on next reload:
BOOT variable = flash:packages.conf;
Manual Boot = no <------- Default
Enable Break = no
Switch#config t
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#boot manual switch 1
Switch(config)#exit
Switch#show boot system switch 1
Switch 1
Current Boot Variables:
BOOT variable does not exist
Boot Variables on next reload:
BOOT variable = flash:packages.conf;
Manual Boot = yes <--------------- now will pause on boot
Enable Break = no
++++ Dont forget to turn it off
Switch(config)#no boot manual switch 1
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Attachments:
arrayrowncolumn2.JPG 64 KB -
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http://download.oracle.com/docs/cd/E11882_01/server.112/e17118/queries003.htm
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Thanks,
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849708 wrote:
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VI \ George V \ Edward VII \ Victoria \ Victoria of Saxe-Coburg-Saalf
eld \ Franz Frederick of Saxe-Coburg-Saalfeld \ Ernst Frederick of Sax
e-Coburg-Saalfeld \ Anna Sophie of Schwarzburg-Rudolstadt
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VI \ George V \ Edward VII \ Albert of Saxe-Coburg and Gotha \ Louise
of Saxe-Gotha-Altenburg \ Louise Charlotte of Mecklenburg \ Frederick
Francis I of Mecklenburg \ Charlotte Sophie of Saxe-Coburg-Saalfeld \
Anna Sophie of Schwarzburg-Rudolstadt
11 \ William of Wales \ Charles, Prince of Wales \ Elizabeth II \ George
VI \ George V \ Edward VII \ Albert of Saxe-Coburg and Gotha \ Ernest
I, Duke of Saxe-Coburg and Gotha \ Franz Frederick of Saxe-Coburg-Saa
lfeld \ Ernst Frederick of Saxe-Coburg-Saalfeld \ Anna Sophie of Schwa
rzburg-Rudolstadt
11 \ William of Wales \ Charles, Prince of Wales \ Elizabeth II \ George
VI \ George V \ Alexandra of Denmark \ Louise of Hesse-Kassel \ Louis
e Charlotte of Denmark \ Sophia Frederica of Mechlenburg-Schw. \ Charl
otte Sophie of Saxe-Coburg-Saalfeld \ Anna Sophie of Schwarzburg-Rudol
stadt
11 \ William of Wales \ Charles, Prince of Wales \ Philip, Duke of Edinb
urgh \ Alice of Battenberg \ Montbatten, Victoria \ Alice, Duchess of
Hesse \ Victoria \ Victoria of Saxe-Coburg-Saalfeld \ Franz Frederick
of Saxe-Coburg-Saalfeld \ Ernst Frederick of Saxe-Coburg-Saalfeld \ An
na Sophie of Schwarzburg-Rudolstadt
12 \ William of Wales \ Charles, Prince of Wales \ Philip, Duke of Edinb
urgh \ Alice of Battenberg \ Montbatten, Victoria \ Alice, Duchess of
Hesse \ Albert of Saxe-Coburg and Gotha \ Louise of Saxe-Gotha-Altenbu
rg \ Louise Charlotte of Mecklenburg \ Frederick Francis I of Mecklenb
urg \ Charlotte Sophie of Saxe-Coburg-Saalfeld \ Anna Sophie of Schwar
zburg-Rudolstadt
11 \ William of Wales \ Charles, Prince of Wales \ Philip, Duke of Edinb
urgh \ Alice of Battenberg \ Montbatten, Victoria \ Alice, Duchess of
Hesse \ Albert of Saxe-Coburg and Gotha \ Ernest I, Duke of Saxe-Cobur
g and Gotha \ Franz Frederick of Saxe-Coburg-Saalfeld \ Ernst Frederic
k of Saxe-Coburg-Saalfeld \ Anna Sophie of Schwarzburg-Rudolstadt
10 \ William of Wales \ Charles, Prince of Wales \ Philip, Duke of Edinb
urgh \ Andrew of Greece and Denmark \ George I of Greece \ Louise of H
esse-Kassel \ Louise Charlotte of Denmark \ Sophia Frederica of Mechle
nburg-Schw. \ Charlotte Sophie of Saxe-Coburg-Saalfeld \ Anna Sophie o
f Schwarzburg-RudolstadtBy the way, SYS_CONNECT_BY_PATH is a function, not a pseudo-column. Pseudo-columns don't take arguments.
I could have tested all this myself, but currently I do not have access to the database. Is there a publicly available database (through ssh) which I can use in the mean time :)You can download Oracle Express Edition.
http://www.oracle.com/technetwork/database/express-edition/downloads/index.html
It's free if all you're using it for is learning.
You can also get a free workspace in an Oracle-hosted database at apex.oracle.com.
Edited by: Frank Kulash on Apr 4, 2011 6:51 PM -
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How do I change default boot sequence?
I just got a K8T Ne0 FIS2R. I am booting to a SATA 120G drive that has Win XP Prof loaded up. When I attach my IDE drives, I have to stop the post (F11) to manually point to "BBS-0 RAID" or my machine will default to an IDE drive (which ever is plugged in) and give me "NTLDR not loaded."
Can I change the default boot sequence (i.e. so that I don't have to manually stop-n-point every time)?
All my drives (1 SATA, 2 IDE) work once I point to the right startup device (SATA 120G).
Thanks for any helpful hints.Quote
Originally posted by 3degs
I recomend that you read your MANUAL carefully again. Also if you dont have the manual you can download it on the main site.
This is not here and neither is that.
Quote
Just view the mainboard specs. and to the right you will se links that will point your way.
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How can we change the column sequence from 1st to 7th position
Hi
I have a table in which I have a column naming DNAME and it is is on the first position I want to change its position to 7 that is the last one. The table is huge filled with data.
Is there ant way in which I can cange the position of the column with out recreating in into another table and then renaming it.
ThanksHello,
The sequence of a column in a table is meaningless and you should treat it as such. The column ordering you see when you run a "select * from ..." query is based on the physical implementation of the table, which is completely separate from the logical interpretation, and should not be relied on in a programmatic context. It should essentially be viewed as "random" and prone to change with the physical storage properties of the table (although this is not always the case, there is no assurance of this).
One way to do this (which happens to be the easiest and least resource-intensive in this case) is to create a view (derived relation) of the base table, with the columns ordered in the specific sequence you desire. But really, the column ordering here is still meaningless, and the only time your application should rely on the order is when you specifically list the columns you require in a query -- but NEVER a "select *".
cheers,
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