Hi guys, I guess I missed those thing about layer 2 and 3.
Thanks 2010/12/22 khaled Saholy <[email protected]> > > Uli, > > Loops in the switching LANs can happen when you add a second link between > two switches. So STP ,in short, works by keeping one path from the root > bridge (one of the elected switches in LAN) to the last switch in the > network and the redundant links will be blocked. You can say , STP is an > opponent to redundancy. > > You have to deferentiate , as Jason said, between layer 2 and layer 3 > networks. > > I hope it clarified part of the picture. > > Regards. > > Khaled Al-Saholy > > > > Date: Wed, 22 Dec 2010 04:49:25 -0800 > > From: [email protected] > > To: [email protected]; [email protected]; > [email protected] > > > Subject: Re: [OSL | CCIE_RS] loop prevention and redundancy > > > > Here is a link that may help > > > > > http://www.cisco.com/en/US/docs/switches/datacenter/sw/5_x/nx-os/high_availability/configuration/guide/ha_network.html#wp1089613 > > > > > > Jason Maynard > > > > > > > > > > ________________________________ > > From: Jason Maynard <[email protected]> > > To: Uli <[email protected]>; "<[email protected]>" > > <[email protected]> > > Sent: Wed, December 22, 2010 7:35:05 AM > > Subject: Re: [OSL | CCIE_RS] loop prevention and redundancy > > > > HSRP, GLBP and VRRP is for Layer 3 redundancy > > > > Here is my question to you > > > > What does STP accomplish (loop prevention), so...... why would loops > occur? > > > > What does STP allow you to do? > > Jason Maynard > > > > > > > > > > ________________________________ > > From: Uli <[email protected]> > > To: "<[email protected]>" <[email protected]> > > Sent: Wed, December 22, 2010 7:17:06 AM > > Subject: [OSL | CCIE_RS] loop prevention and redundancy > > > > Hi Expert, > > > > Since most of my time study cisco only in lab environment (in my > > university)and now I get into real world situation, I found something > that > > bother me a lot. In my understanding STP is for loop prevention and not > for > > redundancy, right ? but why my colleague and people I met they said it's > for > > redundancy (those guys are already in this business for at least 3 years > > experience).Thus, I always argue with them..hmm am I missed something > here ? > > because for redundancy we can use HSRP, GLBP and VRRP. > > > > > > Thanks > > _______________________________________________ > > 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 > _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
