Even when PIM routing is in place, RPs must be configured correctly to find traffic sources. The command show ip pim rp allows you to inspect the configured RPs and look at the mappings that have been applied. The full command is Router(config)#show ip pim rp [group-name | group-address | mapping] Using show ip pim rp, without further modifiers, displays RPs for active groups. If the command is modified with the group name, then only the RPs for the select..
FTP clients and servers use the typical TCP/IP client/server model for the FTP control connection, with the client initiating a TCP connection to well-known FTP port 21. FTP transfers commands and command acknowledgements over the this TCP control connection. However, at some point, data needs to be transferred—and FTP uses a separate but correlated TCP connection for the actual data transfer. FTP clients use one of two modes, passive or active, to define the details of ho..
In addition to the TKIP solution, the 802.11i standard includes the Advanced Encryption Standard protocol. AES offers much stronger encryption than WEP or TKIP. In fact, the U.S. Commerce Department’s National Institutes of Standards and Technology (NIST) organization chose AES to replace the aging Data Encryption Standard (DES). AES is now a Federal Information Processing Standard, FIPS Publication 197, that defines a cryptographic algorithm for use by U.S. government or..
The point-to-multipoint model is very similar to the point-to-point model. It provides one subnet for an entire cloud, and it maintains host routes to all the routers within the cloud. This also allows the use of non-meshed routers. TIP A new command was recently introduced to overcome the problem of sending multicast OSPF packets on the media that form dynamic connections, such as ATM SVC. By default, OSPF sends multicast packets to discover neigh..
Routing Multicast Traffic with PIM-SM and Auto-RP
This recipe accomplishes the same basic, but using a different method. If you are unfamiliar with PIM-SM, please read that recipe first. There are two different types of router configurations for Auto-RP configuration, just as there are for BSR. Router1 represents a regular multicast-enabled router anywhere in the network. This router supports end devices as group members or servers, as well as routing multicast traffic for other routers: Router1#configure terminal Enter ..
