By Andrew Bruce Caslow
Cisco's CCIE certification is present day such a lot profitable, sought-after networking credential: the top-quality for networking pros. In Cisco Certification, moment variation, world-class CCIE instuctor and advisor, Bruce Caslow makes a speciality of the main demanding element of the CCIE examination procedure: the hands-on labs. This bestseller has been absolutely up to date to mirror Cisco's most up-to-date applied sciences and examination pursuits, with new assurance of VoIP, IP multicast, and plenty of different key themes. Bruce Caslow specializes in supplying in-depth, complex reasons of Cisco community configuration and troubleshooting -- not only Q&As. This re-creation provides wide assurance of caliber of carrier, IP multicast, and voice site visitors routing, together with Voice Over IP, Voice Over ATM, Voice Over body Relay. It additionally provides multiplied insurance of 2 key protocols: BGP for connecting inner networks to web carrier prone; and OSPF for inner firm internetworking. It comprises much more lab routines, "Can you see the problems" demanding situations, test-taking suggestions and daily information for challenge solution.
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Extra info for Cisco Certification - Bridges, Routers and Switches for CCIEs
Classless routing protocols advertise the subnet mask with each route. Subnetworks of a given IP network number can be conﬁgured with different subnet masks. Large LANs can be conﬁgured with a smaller subnet mask, and serial links can be conﬁgured with larger subnet mask, thereby conserving IP address space. Classless routing protocols also allow ﬂexible route summarization and superneting. Supernets are created by the aggregation of classful networks. 0/24. RIPv2, OSPF, EIGRP, IS-IS, and BGP are classless routing protocols.
Examples of transport layer speciﬁcations are the following: • • • • • Transmission Control Protocol (TCP) Real-Time Transport Protocol (RTP) Sequenced Packet Exchange (SPX) AppleTalk’s Transaction Protocol (ATP) User Datagram Protocol (UDP) (provides unreliable transport at this layer with less overhead than TCP) Session Layer (OSI Layer 5) The session layer provides a control structure for communication between applications. It establishes, manages, and terminates communication connections called sessions.
Router 2 sends its routing table to Router 3 without the route for Network D because it learned that route from Router 3. book Page 45 Friday, June 14, 2002 3:57 PM General Routing Concepts Figure 2-9 45 Simple Split Horizon Example Router 1 Network A Router 2 Network B Router 3 Network C Network D With split horizon, Router 2 sends Network A and Network B routes to Router 3. No route for Network D is sent to Router 3. With poison reverse, Router 2 sends Network A and Network B routes to Router 3.