Administering Cisco QoS in IP Networks by Wayne Lawson

By Wayne Lawson

Progressively more businesses are designing and imposing distant entry Networks, which permit clients who're now not bodily hooked up to a large quarter community (WAN) or neighborhood sector community (LAN) to entry the network's servers, purposes and databases or to take part in video conferencing and convention calls. the facility for a distant consumer to operate as though they have been within the subsequent place of work dramatically improves total potency whereas decreasing overall expense of possession. Cisco platforms, the world's biggest internetworking seller, is the pioneer of the permitting applied sciences for distant entry Networks. This publication will establish and clarify the entire Cisco items important for designing and development a distant entry community and integrating it with legacy structures. This publication is a qualified reference detailing all the innovations, strategies and strategies for designing, configuring and protecting Cisco distant entry Networks. it is going to comprise thorough discussions of all Cisco entry Servers and routers. * call for for info on distant entry networks is starting to be speedy at company and administrator point * Cisco distant entry networks entice companies as they supply effective and safe connectivity at lowered expense * e-book comprises thorough discussions of all Cisco entry Servers and routers

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In addition, clients or end-stations can join and leave dynamically with little or no impact on the multicast or the network. com 110_QoS_01 2/13/01 6:34 PM Page 9 Cisco IOS Feature Review • Chapter 1 Multicasting can be used to deliver audio and video in real time, which is gaining popularity in corporations as well as with vendors. Multicasting is also used with a wide variety of computer-imaging tools since the technology does not flood the entire network like broadcasting. 255. In binary, an address beginning with 1110 is a multicast address, which allows the last 28 bits to be used for the group address of the specific multicast.

However, it will be very helpful to have a strong understanding of classful addressing before moving on to the more complex VLSM. Although most Internet Class A, B, and C addresses have already been assigned, it is not uncommon to receive an address block within these classes from your address provider, which has already subnetted the addresses down to more economical portions. This reduces the size of the Internet routing tables which, as you can imagine, are massive. An easy way to think of this is that CIDR reduces the size of the network mask, while subnetting increases the size of the network mask.

When a source computer looks at its own IP address and subnet mask, it then determines whether a destination address is on the local subnet or on a different network. If the destination host were on a different network, the source host would send its packets to the local gateway address. If the destination host were on the same subnet as the source host, the source host would send the packet directly. You must be able to translate subnet masks represented in decimal to binary in order to be able to figure out this value.

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