That is very helpful, Bob. And I agree with you too Nick. I was thinking about a scenario where I should have noticed the requirement during the pre-read of the lab, didn't, planned to set MTU and reboot before the end of the lab, and ran out of time. A lot of work to only miss the points IF Cisco expects us to set this as part of the configuration for dot1q tunnels. Of course, it is what it is, and I will just have to catch it next time!
From: Bob McCouch [mailto:[email protected]] Sent: Thursday, October 18, 2012 9:30 AM To: Mills, Derek Cc: [email protected] Subject: Re: [OSL | CCIE_RS] Dot1q Tunnel and MTU And if the grading script used "ping X.X.X.X size 1500" to test? :-) How about routing adjacencies? Might OSPF get tripped up by neighbors agreeing they have 1500 byte MTU, but not being able to actually pass 1500 during LSADB sync? The devil is in those details. On Thu, Oct 18, 2012 at 10:24 AM, Mills, Derek <[email protected]<mailto:[email protected]>> wrote: Good questions Bob and I guess I need to know the answers. Perhaps my downfall is that I would configure it, run a few various pings to verify the reachability requirement, and would count those points when there are no other lab requirements indicating that an mtu change is warranted. From: Bob McCouch [mailto:[email protected]<mailto:[email protected]>] Sent: Thursday, October 18, 2012 9:17 AM To: Mills, Derek Cc: [email protected]<mailto:[email protected]> Subject: Re: [OSL | CCIE_RS] Dot1q Tunnel and MTU Hi Derek, You say "most times" and you are correct. What are the times it wouldn't work? How might those times bite you either while configuring later elements of your lab, or how they might test your solution with a grading script? We must learn the right thing to do, even if IOS doesn't warn you about something. :-) On Thu, Oct 18, 2012 at 9:01 AM, Mills, Derek <[email protected]<mailto:[email protected]>> wrote: Most times configuring dot1q tunnel in the lab will work just fine without changing the MTU on the switches. What is the opinion on whether we should change it or not? If there is a specific task requirement for it there is no question, but is it expected and standard procedure just to increase it ALL the time when you configure it? Will you miss the points if you don't configure it? DEREK MILLS <>< ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Anheuser-Busch InBev Email Disclaimer www.ab-inbev.com<http://www.ab-inbev.com> _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com<http://www.ipexpert.com> Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com<http://www.PlatinumPlacement.com> http://onlinestudylist.com/mailman/listinfo/ccie_rs ________________________________ Anheuser-Busch InBev Email Disclaimer www.ab-inbev.com<http://www.ab-inbev.com/disclaimer.cfm> ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Anheuser-Busch InBev Email Disclaimer www.ab-inbev.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 http://onlinestudylist.com/mailman/listinfo/ccie_rs
