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  • L2 or L3 switching in campus networks? « ipSpace.net blog
    #how-to-build-network #network #network-security | Michael sent me an interesting question: I work in a rather large enterprise facing a campus network redesign. I am in favor of using a routed access for floor LANs, and make Ethernet segments rather small (L3 switching on access devices). My colleagues seem to like L2 switching to VSS (distribution layer for the floor LANs). OSPF is in use currently in the backbone as the sole routing protocol. So basically I need some additional pros and cons for VSS vs Routed Access. :-) The follow-up questions confirmed he has L3-capable switches in the access layer connected with redundant links to a pair of Cat6500s:

    ネットワーク構成について．そのほかの知識もこのサイトにあり

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L2 or L3 switching in campus networks? « ipSpace.net blog

https://blog.ipspace.net/2011/10/l2-or-l3-switching-in-campus-networks/ Internet Archive
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#how-to-build-network #network #network-security
Date added
Sept. 5, 2025, 2:02 p.m.
Description
Michael sent me an interesting question: I work in a rather large enterprise facing a campus network redesign. I am in favor of using a routed access for floor LANs, and make Ethernet segments rather small (L3 switching on access devices). My colleagues seem to like L2 switching to VSS (distribution layer for the floor LANs). OSPF is in use currently in the backbone as the sole routing protocol. So basically I need some additional pros and cons for VSS vs Routed Access. :-) The follow-up questions confirmed he has L3-capable switches in the access layer connected with redundant links to a pair of Cat6500s:
Notes

ネットワーク構成について．そのほかの知識もこのサイトにあり