In the last issue we started following a packet's journey from the wire up to the higher levels of network stack processing. We left the packet at the end of layer 3 processing, where IP has ...

For a class project I had to code an TCP/UDP echo client and server and then capture the resulting packets using TCPDUMP. Here is the output for sending 1000 characters (1000 bytes) from a file from ...

Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with content, and download exclusive resources. In this episode, Thomas Betts chats with ...

In Part 1 of this article, we laid out the throughput and delay problems that can occur in a wireless LAN (WLAN). Now, in Part 2, we'll further the discussion by looking at the impact of throughput ...

Do you remember when we used multi-protocol routing for IPX, AppleTalk, and TCP/IP running on the same network? In the 1980s and early 1990s many enterprises had multiple protocols running on the ...

Transmission Control is an essential aspect of network activity and governs the behavior of many services we take for granted. When sending your emails or just browsing the web you are relying on TCP ...

Network Address Translation (NAT) is a technology that has, in a small way, revolutionized Internet communications. NAT allows multiple computers on a LAN to share a single public IP address for ...

The Transmission Control Protocol (TCP) is a virtual circuit protocol that is one of the core protocols of the Internet protocol suite. TCP and IP (Internet Protocol) are sometimes used synonymously ...

This excerpt is from CCIE Voice Exam Quick Reference Sheets (Digital Short Cut), by Mark Lewis and published by Cisco Press. ISBN-10: 1-58705-333-0 Read Mark Lewis’ blog for Cisco Subnet here. More ...

Often we discuss errored packets that are dropped without understanding the underlying techniques that determine why the packets are discarded. There are checks for errors at several protocol layers.