By Keith T. Hutton, Mark D. Schofield, Diane Teare
ISBN-10: 1587055740
ISBN-13: 9781587055744
Approved Self-Study advisor Designing Cisco community provider Architectures (ARCH) moment version beginning studying for ARCH examination 642-873 Keith Hutton Mark Schofield Diane Teare Designing Cisco community provider Architectures (ARCH), moment version, is a Cisco®-authorized, self-paced studying device for CCDP® beginning studying. This e-book provide you with wisdom of the newest advancements in community layout and applied sciences, together with community infrastructure, clever community providers, and converged community suggestions. by way of interpreting this booklet, you'll achieve an intensive realizing of concerns and issues for primary infrastructure prone, together with protection, community administration, QoS, excessive availability, bandwidth use optimization via IP multicasting, and layout architectures for community options reminiscent of voice over WLAN and e-commerce. no matter if you're getting ready for CCDP certification or just are looking to achieve a greater figuring out of modular campus and facet community layout and strategic recommendations for company networks resembling garage region networking, digital inner most networking, complicated addressing and routing, and knowledge facilities, you are going to enjoy the origin details awarded during this ebook. Designing Cisco community provider Architectures (ARCH), moment version, is a part of a advised studying course from Cisco that incorporates simulation and hands-on education from licensed Cisco studying companions and self-study items from Cisco Press. to determine extra approximately instructor-led education, e-learning, and hands-on guideline provided via licensed Cisco studying companions around the globe, please stopover at www.cisco.com/go/authorizedtraining. Keith Hutton is a lead architect for Bell Canada within the company buyer area. Keith nonetheless keeps his qualified Cisco teacher accreditation, in addition to the CCDP, CCNP®, and CCIP® certifications. Mark Schofield has been a community architect at Bell Canada for the earlier six years. up to now 5 years, he has been fascinated with the layout, implementation, and making plans of enormous nationwide networks for Bell Canada's federal govt clients. Diane Teare is a certified within the networking, education, venture administration, and e-learning fields. She has greater than two decades of expertise in designing, enforcing, and troubleshooting community and software program, and has been excited by educating, path layout, and venture administration. know about the Cisco SONA framework, firm campus structure, and PPDIOO community life-cycle method assessment excessive availability designs and enforce optimum redundancy Plan scalable EIGRP, OSPF, and BGP designs enforce complicated WAN prone overview layout concerns within the facts heart center, aggregation, and entry layers layout garage sector networks (SANs) and expand the SAN with a number of protocols layout and music an built-in e-commerce structure combine firewall, NAC, and intrusion detection/prevention into your community layout layout IPsec and SSL distant entry VPNs set up IP multicast and multicast routing include voice over WLAN within the company community make the most of the community administration services inherent in Cisco IOS® software program This quantity is within the Certification Self-Study sequence provided via Cisco Press®. Books during this sequence supply formally constructed self-study ideas to aid networking execs comprehend expertise implementations and get ready for the Cisco occupation Certifications examinations. classification: community layout Covers: ARCH examination 642-873
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Sample text
Port Aggregation Protocol PAgP is one of the control mechanisms for EtherChannel. PAgP has four modes related to the automatic formation of bundled, redundant switch-to-switch interconnections (see Figure 2-12): • On: Mode that forces the LAN port to channel unconditionally. In the on mode, a usable EtherChannel exists only when a LAN port group in the on mode is connected to another LAN port group in the on mode. Because ports configured in the on mode do not negotiate, no negotiation occurs traffic between the ports.
Cisco NSF allows for the continued forwarding of data packets along known routes while the routing protocol information is being restored following a switchover. With Cisco NSF, peer Cisco NSF devices do not experience routing flaps because the interfaces remain up during a switchover and adjacencies are not reset. Data traffic is forwarded while the standby RP assumes control from the failed active RP during a switchover. User sessions established before the switchover are maintained. The ability of the intelligent line cards to remain up through a switchover and to be kept current with the FIB on the active RP is crucial to Cisco NSF operation.
With hardware, system-level redundancy can be provided using redundant supervisor engines and redundant power supplies. It can also be provided by default gateway redundancy using dual connections from access switches to redundant distribution layer switches. With software, high availability is supported through the use of first-hop routing protocols (FHRP), such as the Hot Standby Router Protocol (HSRP), Virtual Router Redundancy Protocol (VRRP), and Gateway Load Balancing Protocol (GLBP). Note Cisco offers a unique high-availability feature to its 3750 Workgroup Switch and Etherswitch Services Module called StackWise.
Designing Cisco Network Service Architectures, 2nd edition by Keith T. Hutton, Mark D. Schofield, Diane Teare
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