CCNP Route Notes IPv6 Introduction IPv6 is an extension of IP with several advanced features: Larger address space. No more need for NAT. Simpler header for increased router efficiency. No more broadcasts. Stateless autoconfiguration. Built-in support for Mobile IP. Built-in support for IPsec security. Rich transition features. Easy IP address … [Read more...]
CCNP Route Notes Mobile Worker Connectivity
CCNP Route Notes Mobile Worker Connectivity Mobile workers might be in a home office, with an always-on secure connection to the corporate network, managed centrally by the corporation (business-ready mobile worker.) Or they might be truly mobile, connecting via a laptop or public computer to the corporate network (traditional mobile worker.) In planning for either type of … [Read more...]
CCNP Route Notes Branch Office Connectivity
CCNP Route Notes Branch Office Connectivity The needs of branch offices are changing. This is due to the adoption of unified networks that support voice, video, and data; the consolidation of IT resources; and the physical mobility of many users. Branch Office Design Considerations Some design considerations for branch offices include Connectivity technologies: What … [Read more...]
CCNP Route Notes BGP and Internet Connectivity
CCNP Route Notes BGP and Internet Connectivity Planning an Internet Connection Consider your company’s needs when planning your Internet connection. If all you need is one-way connectivity to enable internal users to connect to sites on the Internet, a private IP address space with Network Address Translation (NAT) should suffice. If external users need to connect to … [Read more...]
CCNP Route Notes Path Control
CCNP Route Notes Path Control In general, link redundancy is a good thing, but it can also lead to some network problems. You might want to manually control the route taken by some or all of your traffic to provide a predictable and deterministic traffic flow. Path control can prevent suboptimal routing, ensure path availability, provide optimized performance for specific … [Read more...]
CCNP Route Notes Optimizing Routing
CCNP Route Notes Optimizing Routing There are times when you need to go beyond just turning on a routing protocol in your network. You might need to control exactly which routes are advertised or redistributed, or which paths are chosen. You might also need to use multiple routing protocols. Network performance can suffer when routing is not optimized. Excessive routing … [Read more...]
CCNP Route Notes OSPF
CCNP Route Notes OSPF OSPF Overview OSPF is an open-standard, classless routing protocol that converges quickly and uses cost as a metric. (Cisco IOS automatically associates cost with bandwidth.) OSPF is a link-state routing protocol and uses Dijkstra’s Shortest Path First (SPF) algorithm to determine its best path to each network. The first responsibility of a … [Read more...]
CCNP Route Notes EIGRP
CCNP Route Notes EIGRP EIGRP Overview Enhanced Interior Gateway Routing Protocol (EIGRP) is a Cisco proprietary, advanced distance vector, classless routing protocol that uses a complex metric based on bandwidth and delay. The following are some features of EIGRP: Fast convergence. Support for VLSM. Partial updates conserve network bandwidth. Support for IP, … [Read more...]
CCNP Route Notes Planning for Complex Networks
CCNP Route Notes Planning for Complex Networks Network Design Models Today’s networks typically include voice, video, network management, mission-critical, and routing traffic in addition to bulk user traffic. Each type of traffic has different performance (bandwidth, delay, and jitter) and security requirements. Network design models provide a framework for integrating the … [Read more...]