ietf
[Top] [All Lists]

Re: [rbridge] Last Call: draft-ietf-trill-routing-reqs (TRILL RoutingRequirements in Support of RBridges) to Informational RFC

2007-03-21 01:14:06


--On 20. mars 2007 09:35 -0700 Silvano Gai <sgai(_at_)nuovasystems(_dot_)com> 
wrote:

5) Introduction - Bridging limitation. The first paragraph refers to
Ethernet networks used without Spanning Tree. This is irrelevant, since
Spanning Tree is always deployed in conjunction with Ethernet. The
correct contrast must be between Ethernet with Spanning Tree and
Ethernet with TRILL. The claim of a single broadcast/flooding domain is
incorrect since VLANs have solved this issue many years ago.

"always" is too strong, since most unmanaged bridges (intended for consumers' home networks, but often dangled off the edge of corporate networks as port expanders, without asking for permission) don't seem to be supporting Spanning Tree. However, these are not going to support TRILL either, so for the environments considered here, "always" is probably true.

              Harald


_______________________________________________
Ietf mailing list
Ietf(_at_)ietf(_dot_)org
https://www1.ietf.org/mailman/listinfo/ietf