Bigger and Better Things
I like to take a month or so off from blogging during the summer, but my CCIE R&S written studies pushed that back a bit. I’ve finally got my lazy self back on track, but it may just be for a few days since I’ve accepted
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A Little OSPF Story
Here’s a story from last week with little of no teaching value.
I got a call from one of our business units looking for some routing help. We don’t usually care about their production networks, but they were seeing some funky traceroutes, so I agreed to try and
CCIE R&S Written - Epic WIN!
The wife and I had a romantic day driving several hours to a small town to take Cisco exams. If this doesn’t get me some action, I don’t know what else to try.
I’ve already used the phrases “skin of my teeth” and “a pass is a
OSPF and Loopback Interfaces
I was studying via Google+ Hangout the other day with CJ and Rob, and one of the topics that came up was that OSPFv2 advertises all loopbacks as 32-bit no matter what the configured mask is. I rarely use loopbacks outside of a lab and had no idea it did
CCIE R&S Written - Epic Fail
It’s been a long time, eh? I’ve spent the last month or so with my nose down in a book and my mouse in a Google+ Hangout window studying my rear off for the CCIE R&S Written. Too bad I didn’t pass it.
The exam
Frame Relay Notes - DE, FECN, and BECN
* All are part of the frame relay congestion management suite.
* Frame relay switches monitor links for CIR or oversubscription congestion on links.
* If the VC has a CIR of 256k, the switch knows there is congestion if the customer is sending more than 256k down that VC.
* Discard Eligible
*
* Flag
Frame Relay Notes - LMI, Headers, and Encapsulation
Local Management Interface
* Manages link between the router and frame relay switch
* Routers send Status Enquiry to the switch
* The switch responds with a Status message informing the router of the DLCIs available
* Serves as a keepalive
* Default keepalive is 10 seconds, 3 misses is failed
* Three types
* cisco <