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Cisco > CCNA > quick STP question

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Author quick STP question
ls431o28
Ozone safe Product




Registered: Sep 2001
Location: Clearwater
Country: United States
State:
Certifications: CCNA, MCP, A+
Working on: Net+, MCSA, MCSE, something with linux

Total Posts: 100
Talking quick STP question

In the determination of the Root Bridge does wire speed get added into that or is it just the 32768 and the MAC. I know in the determination of the root ports wire speed is there. Just not sure if i missed something in the reading.

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Old Post 03-15-02 03:43 PM
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HOOLIGAN
Vindaloo
M




Registered: Dec 2000
Location: \
Country: Antarctica
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Certifications: A+ CCNA
Working on: BSc , CCNP

Total Posts: 2349

Only Mac and 32768,


Whats Clearwater like? my company has a base there and im thinking about moving there eventually.

Cheers

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Old Post 03-16-02 12:39 PM
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strikeattack
Senior Member




Registered: Jul 2000
Location: Neenah, WI
Country: USA
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Working on: Sr. Window Washer with an expertise in Windex.

Total Posts: 736

I was waiting to see if anyone answered this question for you, and no one did. So, here is your answer.

quote:
In the determination of the Root Bridge does wire speed get added into that or is it just the 32768 and the MAC. I know in the determination of the root ports wire speed is there. Just not sure if i missed something in the reading.

Wire speed IS NOT a determining factor of the root bridge.

Root Bridge Selection:
The Bridge ID determines who is the root bridge.
Bridge ID [Bridge Priority + MAC]; the bridge with the LOWEST BRIDGE IDENTIFIER is selected as the root bridge. The bridge id equals the 2-BYTE SWITCH PRIORITY plus the 6-BYTE MAC ADDRESS. By default the bridge priority is 32,768. The SET SPANTREE ROOT command changes the bridge priority to 8,192.

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`·.¸¸.·´ Strike Attack `·.¸¸.·´
"If one strives towards a constant state of self-improvement, then the next day will always be better than the last. If the next day is better than the last, then tomorrow is destined to be a better day. If tomorrow is a better day, then one always has something to look forward to, one’s self has persevered, and true happiness becomes a little less difficult to attain." - Strike Attack

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Old Post 03-16-02 12:43 PM
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ls431o28
Ozone safe Product




Registered: Sep 2001
Location: Clearwater
Country: United States
State:
Certifications: CCNA, MCP, A+
Working on: Net+, MCSA, MCSE, something with linux

Total Posts: 100

Hooligan, Clearwater is alright. but than again I enjoy a few months when it is cold and snows. But if you like warm weather, water, bugs, and traffic its the place for you. hehe. but everywhere seems to be growing by leaps and bounds. it is a nice area its just that im ready to move on. I hear there are lots of jobs in the area but ive yet to get a call. guess there looking for people with a little more experience than I have. thanks to everyone for the posts. since thats all that goes into the determination what stops a 10mb connection from becoming the root bridge if all others are 100Mbs or does it not matter what the speed of the root bridge is.

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Old Post 03-16-02 03:16 PM
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strikeattack
Senior Member




Registered: Jul 2000
Location: Neenah, WI
Country: USA
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Working on: Sr. Window Washer with an expertise in Windex.

Total Posts: 736

You are supposed to set the root bridge manually. It is supposed to be near the center of your network, and if I remember correctly, the default STP timers are optimized for a network diameter of 7.

__________________
`·.¸¸.·´ Strike Attack `·.¸¸.·´
"If one strives towards a constant state of self-improvement, then the next day will always be better than the last. If the next day is better than the last, then tomorrow is destined to be a better day. If tomorrow is a better day, then one always has something to look forward to, one’s self has persevered, and true happiness becomes a little less difficult to attain." - Strike Attack

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Old Post 03-16-02 03:18 PM
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ls431o28
Ozone safe Product




Registered: Sep 2001
Location: Clearwater
Country: United States
State:
Certifications: CCNA, MCP, A+
Working on: Net+, MCSA, MCSE, something with linux

Total Posts: 100

hmm Ill have to go back and do some reading in the lammle book. I dont remember reading that you have to set it up manually. than again most the chapters have labs on setting stuff up and I dont remember there being a lab for that chapter.

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Old Post 03-16-02 03:45 PM
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Yankee
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Strike didn't say you HAVE to set pick your root bridge. STP will pick its own if you don't but you have a bad design if you don't manually pick what you want.

Yankee

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Old Post 03-17-02 12:57 PM
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strikeattack
Senior Member




Registered: Jul 2000
Location: Neenah, WI
Country: USA
State:
Certifications: More than your grandma and less than God.
Working on: Sr. Window Washer with an expertise in Windex.

Total Posts: 736

quote:
Strike didn't say you HAVE to set pick your root bridge.

Yep. What he said.

__________________
`·.¸¸.·´ Strike Attack `·.¸¸.·´
"If one strives towards a constant state of self-improvement, then the next day will always be better than the last. If the next day is better than the last, then tomorrow is destined to be a better day. If tomorrow is a better day, then one always has something to look forward to, one’s self has persevered, and true happiness becomes a little less difficult to attain." - Strike Attack

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Old Post 03-18-02 11:27 PM
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ls431o28
Ozone safe Product




Registered: Sep 2001
Location: Clearwater
Country: United States
State:
Certifications: CCNA, MCP, A+
Working on: Net+, MCSA, MCSE, something with linux

Total Posts: 100

Dang nothing like everyone jumping on the boat to make someone look bad on an interpretation of what they read.

__________________
Somebody better go back and get a shitload of dimes!!!!

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Old Post 03-19-02 02:41 AM
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strikeattack
Senior Member




Registered: Jul 2000
Location: Neenah, WI
Country: USA
State:
Certifications: More than your grandma and less than God.
Working on: Sr. Window Washer with an expertise in Windex.

Total Posts: 736

quote:
Dang nothing like everyone jumping on the boat to make someone look bad on an interpretation of what they read.

HA! Don't sweat it, I've done the same thing before. After all, techies are known for being exact and precise to the point of being anal.

__________________
`·.¸¸.·´ Strike Attack `·.¸¸.·´
"If one strives towards a constant state of self-improvement, then the next day will always be better than the last. If the next day is better than the last, then tomorrow is destined to be a better day. If tomorrow is a better day, then one always has something to look forward to, one’s self has persevered, and true happiness becomes a little less difficult to attain." - Strike Attack

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Old Post 03-19-02 02:54 AM
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