October 2012
Intermediate to advanced
419 pages
10h 47m
English
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Chapter 13. Spanning Tree Protocol
Spanning tree protocol (STP) is very important in layer-2 networks, and its impact should be clearly understood when designing or even troubleshooting a network. If you’ve been around Cisco gear for the majority of your networking life, you’ve probably used Per-VLAN Spanning Tree (PVST) or Rapid-PVST (RPVST). In this chapter, I’m going to primarily cover a form of STP that is becoming more common in large data centers: Multiple Spanning Tree (MST).
Data center networks have very different requirements than enterprise networks do. For example, few of the enterprise networking professionals I meet know that many switches have spanning tree limitations. I worked for a client that had Cisco 3750s in the core of a small data center. Things seemed to work alright until they added the 257th VLAN, and that’s when they learned that Cisco 3750s only support STP up to 256 VLANs. Bummer.
I was brought in to help solve the problem, and after my recommendation of, “Buy data center class chassis switches” was ignored, I looked for other options. That’s when I learned about MST.
Arista switches can run a variety of STP types. You can change the
type using the spanning-tree mode
mode-type command:
SW1(config)#spanning-tree mode ?
mstp Multiple spanning tree protocol
none Disable spanning tree
rapid-pvst Per VLAN rapid spanning tree protocol
rstp Rapid spanning tree protocolSince I’ve covered spanning tree and rapid-PVST in Network Warrior, I’m going to focus mostly ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.