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QoS Pre-classify and Class-map Order

I’m still studying for the ONT test, so I did some labs tonight. One of them was to demonstrate the qos pre-classify command for tunnel interfaces. When you have a packet sent over a GRE tunnel, the ToS field gets copied to the GRE packet, but there’s no

Stubby post: ROUTE Cert Kit Giveaway

Rofi at ITDualism is giving away a ROUTE cert kit to a random commenter. Swing by there and put your name in the hat.

ONT - Epic Fail

I failed the ONT test today. It was an utter lack of subject matter knowledge that did me in from the beginning. When the first three questions mention things that I’ve never even heard, it’s going to be a long test. I’ll take blame on it for

ONT Notes - WLAN Management

Elements of Cisco Unified Wireless Network * Client devices – Cisco compatible extensions on WLAN clients * Mobility platform – allows configuration of LWAPs through WLCs * Network unification – integration into the rest of the network with WLCs doing RF management, IPS, etc. * World-class network management – centralized management through WCS * Unified advanced services – supports advanced

ONT Notes - 802.1x and Encryption on LWAPs

* 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 * Vulnerable to dictionary attacks * No protection against rogue APs * Benefits of 802.1x * Centralized authentication through Radius via AAA * Mutual

ONT Notes - QoS On Wireless Networks

* 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 * DCF is based on RF carrier sense, inter-frame spacing (IFS), and random wait timers * Wifi QoS standards * 802.11e * IEEE standard * 0-7 priority

ONT Notes - AutoQoS

* AutoQoS benefits * Automates QoS for most deployments * Protects business-critical apps to maximize availability * Simplifies QoS deployments * Reduces configuration errors * Cheaper, faster, and simpler deployments * Follows DiffServ * Allows complete control over QoS configs * Allows modification of auto-generated configs * AutoQoS phases of evolution * AutoQoS VOIP – Early version that configures the basics without