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…
Tag: BCMSN Notes
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…
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:
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)…
CCNP BCMSN Notes – Multilayer Switching
Interfaces on multilayer switch are designated as switch ports (layer 2) with switchport or routed ports (layer 3) with no switchport. Switched Virtual Interfaces (SVIs) can be defined to provide a routed…
CCNP BCMSN Notes – Advanced Spanning Tree Protocol
Rapid STP (RSTP) RSTP was developed to provide a faster converging alternative to STP, and is defined in IEEE 802.1w. Like STP, RSTP can be applied as a single instance or per…