Friday, October 29, 2010

Another Good Link

Been having to do alot of switchport troubleshooting recently...heres a good link that explains almost every field in a "show interface" output.

Troubleshooting Switchports

IOS 12.4 Library

Here's my reference link to the 12.4M configuration library.  Very useful for looking stuff up on the fly.

Enter 12.4 Configuration Library

Sunday, October 24, 2010

More IPv6

Well I cruised through most of the ipv6 stuff today in INE V1 WB.  Some stuff caught me off guard, others were unsupported by my version of IOS's, so I just studied the book and solutions well.  I have IPv6 capabilities on my catalyst 3550's, but even when I have them configured they dont work.  Like say I have a diagram like this:

R1------------SW1

I can configure the link for IPv6...doing a ping..the normal ND process shows the NS hitting the router...and he sends the NA back, but it is never received on the 3550.  I gave up and just used a router on the other side instead...it works.  I am also going to remove my time ticker..I quit keeping track to be honest...it was a hindrance IMO; and I ended up concentrating on it way more than I ever should have...numbers like that are arbitrary for the most part.   When I am ready, I am ready...point blank.

Saturday, October 23, 2010

So Sorry

So more like question of the month...I know...
I have been BUSY...took a trip out to Colorado to see some relatives, and we have a huge "cloud" project going on at work including a "bake-off" with most of the major cloud vendors.  I have learned a significant amount about FC, FCoE, iSCSI, etc..over the past couple of day, including alot with the Nexus and MDS series switches.  Been a great learning experience, but a hinder to my studies.  I have been finishing up IPv6, and doing a bit of labbing with it over the w/e as well as some last week.  I actually like it!  Seems like they got their @#! together for this one.

Wednesday, October 6, 2010

Question of the Day

An administrator needs to use an OSPF area id of 0.0.13.1, but the router will not accept it (for whatever reason :))  What would be another number you could enter that would be equivalent to the original area id shown above?

Highlight --> (x*256^3) + (x*256^2) + (x*256) + x = (0) + (0) + (13*256) + (1) = 3329

                      

Tuesday, October 5, 2010

Tonights Woe's

Well after working on my studies all day, both reading and labbing, I fired the lab back up tonight to get another hour or so in.  Only to find out that my newly configured 2509 was not letting me in...it would boot, but would not let me execute any commands.  I savilly found out that through my aux port I could actually hit return...but I  hadnt set an enable password :(  So what the hell did I do?  Can you guess :)  I reloaded the thing, and entered the break sequence giving me the > prompt.  I went ahead and entered the following:
>o/r 0x2142
>i
when it rebooted I did a copy start run, and then looked at my config....ah glorious, in my terminal server config I managed to do a no exec on the console line *dogh*!!!  I took that out, reset the config-register to 0x2102, and voila!  Good as new...and my heart stopped at the thought of telling my wife that I had yet another router to buy because one died!