By Terry Jack
This is the booklet you must organize for Cisco's construction Cisco Multilayer Switched Networks (BCMSN) examination, 642-811. This learn consultant provides:In-depth assurance of key examination issues sensible details on designing and imposing multilayer switched networks countless numbers of tough evaluate questions modern examination practise software program, together with a attempt engine and digital flashcards Authoritative insurance of all examination themes, including:Utilizing the firm Composite version for designing networks utilizing the Switching Database supervisor inside of a Catalyst swap working controlled VLAN companies on a switched community Configuring and verifying 802.1Q and ISL trunks Configuring entry ports for static and multi-VLAN club expanding bandwidth for interswitch connections with speedy and Gigabit EtherChannels allowing Spanning Tree Protocol on ports and VLANs changing CatOS to local IOS on Catalyst switches enforcing IP telephony in a switched community atmosphere making plans, configuring, and enforcing QOS
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Extra resources for CCNP: Building Cisco Multilayer Switched Networks Study Guide (642-811)
3. Segment, packet, frame, bits. It is important to understand the question. This question asked for the units of data, which shows how data is encapsulated as user data goes from the Application layer down to the Physical layer. 4. The core layer should have no packet manipulation, if possible. 5. Segments are the name for the PDU used at the Transport layer. 6. A packet or datagram is the PDU used at the Network layer. 7. Access layer. Remember, the distribution layer is used to break up broadcast domains, and the access layer is used to break up collision domains.
STP is not implemented in the core if you have layer 3 devices. Routing protocols, which can have a much faster convergence time than STP, are used to maintain the network. Automatic Load-Balancing If you provide layer 3 devices in the core, the routing protocols can load-balance with multiple equal-cost links. This is not possible with layer 3 devices only at the distribution layer, because you would have to selectively choose the root for utilizing more than one path. Elimination of Peering Problems Because routing is typically performed in the distribution layer devices, each distribution layer device must have 'reachability' information about each of the other distribution layer devices.
Switch Block Size To understand how large a switch block can be, you must understand the traffic types and the size and number of workgroups that will be using them. The number of switches that can collapse from the access layer to the distribution layer depends on the following: • Traffic patterns • Routers at the distribution layer • Number of users connected to the access layer switches • Distance VLANs must traverse the network • Spanning tree domain size If routers at the distribution layer become the bottleneck in the network (which means the CPU processing is too intensive), the switch block has grown too large.