Forcing Ingress Multicast Replication Mode (Optional)
The MVPN feature supports only ingress multicast replication mode. If the switch is currently configured for egress replication, it is forced into ingress replication when the first MVRF is configured. This change in replication mode automatically purges all forwarding entries in the hardware, temporarily forcing the switch into software switching until the table entries can be rebuilt. To avoid disrupting customer traffic, we recommend verifying that the switch is already i..
Root Guard and BPDU Guard: Protecting Access Ports
Network designers probably do not intend for end users to connect a switch to an access port that is intended for attaching end-user devices. However, it happens—for instance, someone just may need a few more ports in the meeting room down the hall, so they figure they could just plug a small, cheap switch into the wall socket. The STP topology can be changed based on one of these unexpected and undesired switches being added to the network. For instance, this newly added a..
SSL is an encryption technology for web host devices used to process secure transactions. For example, a secure transaction is required when a client enters their credit card number for e-commerce via their browser. When the end user enters a web address via an Internet browser, such as Internet Explorer, instead of entering HTTP://web address in the address window, the end user enters HTTPs://web address. Note Secure Hypertext Transfer Protocol (S-HTTP) transports HTTP-bas..
ATM is a reliable and high-speed data link layer technology that guarantees a certain or predefined quality of service for voice, video, or data traffic. The history of the ATM technology dates back to 1980. At that time, the high demand for fast speed and reliable access over long distances led the ITU-T and other standards groups to establish an industry standard for Broadband Integrated Services Digital Network (B-ISDN). The new generation of networks defined by the B-ISDN..
Understanding Frame Relay Devices and Network Implementation
In general, the physical network devices in a Frame Relay network belong to two broad categories: · Data terminal equipment (DTE) · Data circuit-terminating equipment (DCE) A DTE device is typically the end device of a network. It is usually classified as customer premises equipment (CPE) if it is physically located at the customer's site. A router can ..
