Hi Raul, Check out this blog entry:
http://leigh-cciewireless.blogspot.com/2011/02/canned-configurations.html Cheers, Leigh On 24 June 2011 02:40, Raul Manzano <[email protected]> wrote: > Hi Guys. > > I need your help. I'm working to build a table with the recommended > configurations for every type of interface. I know this status may change > due to lab requirements but having a "start line" can help us to speed up > the lab configuration or to recognize a lab requirement that can > change their configuration. > > As far I know, by default: > > + Layer 2: > - Access layer interface always trust DSCP. > - Trunk layer interface, hum, normaly you should trust COS but not always: > exceptions > * When on a link to a wired phone??? 7921G deployment guide told us to > trust DSCP (assuming SCCP and RTP traffic is setting correctly from the > Phone I think) , Others design guides for Cisco IP phones or, the use of > Auto QoS command, suggest the use of trust COS. > * When on a link to WLC (Trust COS by default if all vlans are tagged, if > not, do we trust DSCP??) > * When on Layer2 UPlink, always I though that we should trust COS but > yesterday I read in a lab that trust DSCP is a best practice recommendation. > I find nothing to indicate it. > * When on an Autonomous AP or H-REAP link: Coz, a sea of doubts, Autonomous > AP normaly trust COS, and we can do all the traffic to pass 802.1q tagged, > If we trust in cos markings we can trust cos on the interface because all > traffic can be tagged. If we need to use a native VLAN (traffic not tagged) > I assumed that with trust COS all the traffic not tagged is marked to COS 0 > and DSCP 0 and this is not desirable. In the same way we have the H-REAP AP, > with the difference of the native vlan that is mandatory, then we are forced > to use trust DSCP I think. > > +Layer 3: > - Layer 3 UPlink: Trust DSCP > > Careful with this, I have not taken into account the use, if the lab > requirement point to it, the use of vlan-based QoS or MQC, only to keep in > mind which are the "default" configurations for every interface if lab > requirement does not say otherwise. > > Thanks. > > Cheers!! > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com > > -- CCIE Blog - http://leigh-cciewireless.blogspot.com/
_______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
