Aaron's Worthless Words

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350-001

CCIE R&S Written -- Epic Fail (Again Again)

On Friday, and for the fourth time, I took the CCIE R&S Written exam (350-001). For the third time, though, I failed. Let me tell you, I am absolutely devastated. I worked my buns off for the past few weeks, but I’m obviously missing some important piece

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

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 <

PPP Notes - LFI

* Link Fragmentation and Interleaving * A QoS tool to prevent smaller, higher-priority packets from waiting on larger packets to transmit * For example, VoIP packets and FTP packets * Fragments the larger packets and interleaves them with the smaller packets * Only available in PPP with Multilink * Can be a multilink bundle with a

Redistribution Notes - AD Manipulation

* Manipulating administrative distance (AD) is another way to help with a mutual redistribution scenario. * EIGRPs has different ADs for internal and external (redistributed) routes * OSPF and RIP have the same AD no matter where the route orginated. * This means that routes redistributed into OSPF may be used instead of a