Cascading layer 2 switches

Unanswered Question


We have a campus designed network that have a core level: 10720 routers on a ring topology, a distribution level: 3750 switches with ip routing, and an access level: 2950,2960,3550 POE and 3560 POE layer 2 switches. I want to know how many switches can I link together on my access layer. What is the maximum level that I can cascade layer 2 switches: 2,3 or more?

i.e distribution 3750----2960---2960---and so on.


  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
scottmac Mon, 06/16/2008 - 11:14
User Badges:
  • Green, 3000 points or more

Stringing switches along like that is against Best Practices because it generally creates a massive bottleneck (all that downstream bandwidth aggregating and trying to squeeze out of the top switch's egress) and frequently creates a chain of single-point(s)-of-failure (regardless of Layer 2 or Layer 3 architecture).

It's just not a good idea; avoid it at all costs.

Good Luck


Collin Clark Mon, 06/16/2008 - 11:21
User Badges:
  • Purple, 4500 points or more

As Scott stated, don't (over) do it! Two is the most I would recommend. You may have to manipulate spanning tree too, so it may also depend on your knowledge level.

Hope that helps.


This Discussion