Test

ONT Notes - 802.1x and Encryption on LWAPs

2010-02-12 ·2 min read

Traditional WLAN weaknesses SSID for security Vulnerable to rogue APs MAC filtering for security WEP WEP weaknesses Disribution of static keys is not scalable WEP keys can be cracked easily …

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ONT Notes - QoS On Wireless Networks

2010-02-11 ·2 min read

Wireless LANs (WLANs) Extensions to wired LANs Carrier sense multiple access collision avoidance (CSMA/CA) as media access method Uses distributed coordinated function (DCF) for collision avoidance …

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ONT Notes - AutoQoS

2010-02-10 ·2 min read

AutoQoS benefits Automates QoS for most deployments Protects business-critical apps to maximize availability Simplifies QoS deployments Reduces configuration errors Cheaper, faster, and simpler …

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ONT Notes - Pre-classify and End-to-end QoS

2010-02-04 ·2 min read

VPNs (Didn’t ISCW cover this?) Provide Confidentiality Integrity Authentication Types Remote-access Client-initiated NAS-initiated Site-to-site LAN-to-LAN Extranet L3 Tunneling protocols GRE …

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ONT Notes - Congestion Avoidance, Policing, Shaping, and Link Efficiency

2010-02-03 ·2 min read

Tail drop drawbacks TCP synchronization - Dropping TCP packets from different flows can cause them all to window down and back up again at the same time in cycles. TCP starvation - Non-TCP or …

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ONT Notes - Queuing

2010-01-24 ·3 min read

Here are some more notes from my studies. Of course, no one cares about them but me, but it’s my blog. I’m sure someone will find it useful. Please help to correct dumbass mistakes. Congestion …

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ONT Notes – Classification, Marking, and NBAR

2010-01-22 ·3 min read

Here’s another set of notes from my ONT studies. I’m sure someone will find it useful. Please help to correct dumbass mistakes. Classification is done with traffic desriptors Ingress …

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ONT Notes - Intro to QoS

2010-01-21 ·3 min read

I’ll try to keep it a little shorter this time. Major issues for converged enterprise networks Available bandwidth: competition among applications Fixes Increase bandwidth: More power! Properly …

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ONT Notes - VOIP Networks

2010-01-10 ·8 min read

Here are some of the notes I’ve been taking while reading over the ONT book. I hope it benefits somebody. Feel free to correct any stupid mistakes as a paraphrase to avoid a lawsuit. …

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ISCW Down, Three To Go

2009-12-10 ·4 min read

I took and passed the ISCW test today. I was super-nervous going into it, which is weird for me, but I finally calmed down after the first few questions. Here’s my take. I don’t want to …

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