We have an app server that is capable of supporting Ethernet frames up to 6K or so. Currently, it has redundant connections to a pair of Cat 4506 (Sup IV, IOS 12.2(25)EWA5) on 10/100/1000 48-port line cards. Both switches have a pair of Gig fiber trunks uplinked to redundant 6509 core switches (Sup 2,IOS 12.2(18)SXF3.) I have reviewed Cisco's documentation on enabling jumbo frame support on these switches, but on how many interfaces would I need it configured? The two interfaces on the 4500 switches are a given, but does it also need to be set on all the aforementioned trunked interfaces? Or does this have to be applied to nearly all datacenter switches, similar to uplinkfast/backbonefast commands?
Although my opinion is theoretical, I'd say it would be better to either have a complete jumbo frame connection or none at all.
If the server-switch connection features jumbo and the rest doesn't, then the switch has to care for segmenting/fragmenting the jumbos into standard size frames. This may take some load off the server, but puts the load directly on the switch.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...