Loading ...CCNP BCMSN Notes – Cisco Unified Wireless Network
Tuesday, November 10th, 2009Autonomous 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 Protocol (LWAPP) tunnels. The division of layer two functions between a LAP and WLC is referred to as a split-MAC architecture. LWAPP tunnels: [...]
CCNP BCMSN Notes – Wireless Architecture and Design
Tuesday, November 10th, 2009Legacy 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 AP. Sorry you have no rights to view this post! [This content is only available for our VIP member].
CCNP BCMSN Notes – Wireless LAN Overview
Monday, November 9th, 2009Frame 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, a station wishing to transmit must wait for the current station to finish plus the length of the DCF Inter-frame Space (DIFS) and [...]
CCNP BCMSN Notes – Securing with VLANs
Monday, November 9th, 2009VLAN 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 configuration: Sorry you have no rights to view this post! [This content is only available for our VIP member].
CCNP BCMSN Notes – Securing Switch Access
Monday, November 9th, 2009Port Security Port security can be used to restrict which or how many hosts connect to a switch port: Sorry you have no rights to view this post! [This content is only available for our VIP member].
CCNP BCMSN Notes – IP Telephony
Friday, November 6th, 2009Power 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 Sorry you have no rights to view this post! [This content is only available for our VIP member].
CCNP BCMSN Notes – Router, Supervisor, and Power Redundancy
Friday, November 6th, 2009Hot 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) are only significant to an interface. Sorry you have no rights to view this post! [This content is only available for our VIP [...]
CCNP BCMSN Notes – Multilayer Switching
Thursday, November 5th, 2009Interfaces 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 interface to a VLAN. Cisco Express Forwarding (CEF) Traditional multilayer switching ("route once, switch many", also known as NetFlow switching or route cache [...]
CCNP BCMSN Notes – Advanced Spanning Tree Protocol
Thursday, November 5th, 2009Rapid 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 VLAN. A root is elected by lowest bridge ID, as in 802.1D STP. Sorry you have no rights to view this post! [This [...]