Autonomous APs can be burdensome to manage in large numbers; a lightweight solution is preferred. Lightweight Access Points (LAPs) communicate with a centralized Wireless LAN Controller (WLC) through Lightweight Wireless Access Point…
CCNP BCMSN Notes – Wireless Architecture and Design
Legacy Authentication Types Open Authentication No authentication is used; any client can associate to an AP. Pre-Shared Key (PSK) A pre-shared static Wired Equivalence Protocol (WEP) key authenticates the client to the…
Springer – IP Operations and Management
This book constitutes the refereed proceedings of the 9th IEEE Workshop on IP Operations and Management, IPOM 2009, held in Venice, Italy, on October 29-30, 2009, as part of the 5th International…
CCNP BCMSN Notes – Wireless LAN Overview
Frame Transmission Carrier Sense Multiple Access/Collision Avoidance (CSMA/CA) is used in 802.11 WLANs to avoid collisions. The Distributed Coordination Function (DCF) handles the transmission of frames. If one station is currently transmitting,…
CCNP BCMSN Notes – Securing with VLANs
VLAN Access Lists (VACLs) VACLs can filter traffic within a VLAN and do not require a routed interface. A VACL can match traffic from a MAC, IP, or IPX access list. VACL…
CCNP BCMSN Notes – Securing Switch Access
Port Security Port security can be used to restrict which or how many hosts connect to a switch port:
CiscoPress – Traffic Engineering with MPLS
Almost every busy network backbone has some congested links while others remain underutilized. That’s because shortest-path routing protocols send traffic down the path that is shortest without considering other network parameters, such…
CCNP BCMSN Notes – IP Telephony
Power Over Ethernet (PoE) Two solutions exist to supply PoE: Cisco Inline Power (ILP) – Cisco proprietary solution developed before IEEE 802.3af IEEE 802.3af – Standard
CCNP BCMSN Notes – Router, Supervisor, and Power Redundancy
Hot Standby Router Protocol (HSRP) HSRP is Cisco proprietary, but defined in RFC 2281. HSRP routers multicast to the all-routers address 224.0.0.2 on UDP port 1985. HSRP group numbers (0 – 255)…