Using Link Fragmentation
and Interleaving
Real-time and interactive traffic like Telnet, voice, and video can be affected negatively
by jitter created when a router must process large packets on low-speed
interfaces.These real-time streams usually consist of small packets, and jitter is
caused when the regularly timed transmission of these packets is interrupted by
the serialization delay of sending a large packet. Serialization delay is the fundamental
time it takes a packet to be sent out a serial interface. It is based on the
simple function:
PacketSize(bits)
BitRate(bps)
Table 8.5 shows serialization delays tabulated for common circuit speeds.