Content Networking Fundamentals by Silvano Da Ros

By Silvano Da Ros

A finished creation to the idea and functional functions of content material networking• Get a robust advent to the fundamental networking ideas priceless for content material networking, together with community handle translation, IP multicast content material supply, caliber of provider, and streaming media• grasp the application-layer protocols, together with HTTP, SSL, RSTP, RTP and FTP• layout redundancy and excessive availability through the use of server load balancing, area identify approach (DNS) listing companies, Cisco DistributedDirector software program, proximity-based load balancing, and worldwide sticky databases• learn how to change and offload encrypted content material through uploading, developing, and configuring certificate and keys in safe Sockets Layer (SSL) termination units• learn how one can configure routers with net Cache conversation Protocol (WCCP) and to modify content material requests to content material engines for serving usually asked gadgets• easy methods to configure caching, dwell push- and pull-splitting, content material acquisitioning, and pre-positioning utilizing Cisco software and content material Networking method (ACNS) softwareContent networking is the most well-liked expertise used to reinforce community and alertness functionality. the expansion of content material networking has been pushed through end-user calls for for richer content material and decreased reaction occasions. those calls for have prompted the sector of content material networking to flourish with technological advances. this day many businesses use content material networking so as to add a layer of intelligence to their platforms, scaling server availability and optimizing content material supply.

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Every data octet (or byte) in a TCP segment is logically assigned a sequence number. The sequence number in a TCP segment header references the first octet in the payload of the segment, residing directly after the TCP header, as illustrated previously in Figure 2-17. Consider the following example in which a client requires information from a server. The client application generates a content request to send to the server. TCP segments the content request into chunks of data that are appropriately sized for an IP packet.

Often, network cable installation and maintenance is the responsibility of the network administrator or manager, in addition to specific responsibilities associated with the particular role. This is also the case with most content networking roles, because installing and maintaining content networking products also requires physical layer cable and network interface management. Ethernet is the predominant protocol used in the content networking solutions. Figure 2-1 shows how the Ethernet layers coincide with the data link and physical layers of the OSI model.

For example, the Cisco PIX firewall uses a proprietary stateful failover mechanism for the standby firewall to know when to take over processing for the active firewall. Technically, you also can use FWLB to manage availability, but in most cases Cisco recommends using its proprietary mechanism for Cisco PIX failover. Furthermore, scaling the Cisco PIX firewalls by upgrading to a higher series firewall is often less costly in terms of financial investment in the hardware and resources required to manage the design.

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