Stubby Post: Cisco Has Changed the Internet*
·1 min read
* For definitions of “changed” and “Internet” Today Cisco announced their new CRS-3 that replaces the CRS-1. The CRS-3 has some damn impressive numbers for sure with 322Tbps, …
Posts
QoS Pre-classify and Class-map Order
·4 min read
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 …
ONT - Epic Fail
·2 min read
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, …
ONT Notes - WLAN Management
·1 min read
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 …
ONT Notes - 802.1x and Encryption on LWAPs
·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 …
ONT Notes - QoS On Wireless Networks
·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 …
ONT Notes - AutoQoS
·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 …
ONT Notes - Pre-classify and End-to-end QoS
·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 …