You would imagine that anyone getting this far in their CCIE study would already have a solid understanding of the Address Resolution Protocol (ARP, RFC 826). However, proxy ARP (RFC 1027) is often ignored, in part because of its lack of use today. To see how they both work, Figure 5-3 shows an example of each, with Fred and Barney both trying to reach the web server at IP address 10.1.2.200. Figure 5-3 Comparing ARP and Proxy ARP Fred follows a no..
AppleTalk Addressing and Address Structure
"TCP/IP Basics"—is described as an open protocol, AppleTalk is a proprietary protocol controlled by Apple Computers. AppleTalk has a unique network address structure and a unique naming methodology for network services. This section explores the AppleTalk network address structure that all clients (also called workstations) and servers must have to communicate within an AppleTalk internetwork. The AppleTalk network address is a 24-bit address consisting of two distinct co..
One advantage of the single CPU architecture is that performance improvements could be obtained merely by increasing the speed of the CPU (which occurred through the CSC and CSC3 motherboards, respectively). However, as the demand for greater throughput increased, it became necessary to increase the bus speed and offload some of the switching from the CPU. A new series of bit-slice-processor interface cards, coupled with a 533 Mbps cbus and associated controller, did just tha..
At the most basic level, a wireless medium has no inherent organization. For example, a PC with wireless capability can simply bring up its wireless adapter anywhere at any time. Naturally, there must be something else that can also send and receive over the wireless media before the PC can communicate. Tip: In IEEE 802.11 terminology, any group of wireless devices is known as a service set. The devices must share a common service set identifier (SSID), which is..
Use the clear logging command to clear the router's internal log buffer: Router#clear logging Clear logging buffer [confirm]<enter> Router# There are times when it is useful to be able to clear your router's internal buffer log. For instance, while debugging a network problem, old debug messages can cause unnecessary confusion during stressful moments. This will clear the router log: Router#clear logging Clear logging buffer [confirm]<enter> Router>show logg..
