The following steps configure an IOS device as a DHCP server: Step 1. Create a pool of addresses to assign to clients. The syntax for this command is: Router(config)#ip dhcp pool name Step 2. Assign a network to the pool: Router(config-dhcp)#network network/mask Step 3. Tell the client how long it can keep the address—this is called the lease period. Most DHCP implementations use a three-day lease, but IOS defaults to one day: Router..
Each 802.11 physical layer defines a set of RF channels. For example, the 802.11b/g standard defines 14 RF channels in the 2.4-GHz band, with varying numbers of these channels available in specific countries. In the United States, for instance, the FCC’s rules allow the use of only channels 1 through 11. In the case of 802.11b/g, these channels overlap with each other, as shown in Figure 22-7. As a result, companies installing 802.11b/g wireless LANs should set adjacent acc..
Well-Known Multicast Addresses
IANA controls the assignment of IP multicast addresses. To preserve multicast addresses, IANA is reluctant to assign individual IP multicast addresses to new applications without a good technical justification. However, IANA has assigned individual IP multicast addresses to popular network protocols. IANA has assigned several ranges of multicast IP addresses for specific types of reasons. Those types are as follows: ■ Permanent multicast groups, in the range 224.0.0.0–2..
An MPLS-based network consists of routers and switches interconnected via transport facilities such as fiber links (see Figure 1-1). Customers connect to the backbone (core) network through multiservice edge (MSE) routers. The backbone comprises the core routers that provide high-speed transport and connectivity between the MSE routers. An MSE router contains different types of line cards and physical interfaces to provide Layer 2 and Layer 3 services, including ATM, FR, Ethe..
Configuring Frame Relay RTP Header Compression
RTP, defined in RFC 1889, is designed specifically for transporting audio and video traffic in packets over an IP-based network. RTP provides end-to-end transport for applications that support audio, video, multicast, or unicast network services. The RTP protocol format includes both header and data portions. The data portion of RTP provides support for real-time applications, such as continuous media streaming, loss detection, timing reconstruction, and content identificati..
