CLI Jockey

So after putting off doing the TSHOOT (642-832) exam, my final one to gain CCNP, I finally booked and did it. In the end I found it relatively straight forward gaining a massive 100% (1000/1000).

It was actually quite an enjoyable exam (if that is possible), consisting of a number of ‘trouble tickets’. The tickets all consist of the same topology, which you can view on the Cisco learning network site. Read more »

During the building and configuration of a number of brand spanking new Cisco 6509′s with Sup720-3C I decided to convert them to VSS mode before updating the IOS (mainly due to laziness and only having console access). The conversion worked a treat however when I can to upgrade the IOS with ISSU I seemed to hit a glitch, the standby sup got itself in a reboot loop. Read more »

During some recent work we discovered a very interesting bug with Cisco 6500 and specifically their WS-X6708-10GE and WS-X6716-10GE cards. When installing the cards into 6509 or 6513 chassis it can cause an existing module to reload so if you happen to have chosen slot 9-13 you have a issue. The 8th slot above the one you install the card into will reload. So if you place in slot 9, slot 1 may reload. The interesting example I can think of is if you happen to be using a 6513 and install in slot 13 which slot is 8 above…..yes slot 5 which will be your supervisor card! Read more »

The other week I can across a very useful command after we had a failure to one of our Sup720 cards is a 6509′s. The card was replaced but during the boot-up it would keep on dropping back to ROMMON, however when you type ‘boot’ it would load as expected. When I was asked to have a look my immediate thought was ‘config register’ settings. Read more »

I have been hitting a bug with the version of code we are running on our Cisco SSLM which is holding up a project rollout, as a result TAC have provided a version that it is fix on. I decided to give it a whirl in the test lab however spent a rather long time trying to work out how you upgrade the images on these modules with very little luck. It turns out it is straight forward (arnt all things when you know how to do it). Read more »