Ip Aggregates Menu - Vocality V100 Technical Manual

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3.4.9.9

IP AGGREGATES menu

Each line in this menu represents a separate IP aggregate. Up to 31 IP aggregates may be specified.
Additional pages are presented with menu buttons to move between pages if the number of configured
aggregates exceeds the number on a single page.
The V100 supports multiplexing over IP networks. This is achieved through the configuration of point-to-
point connections between pairs of V100s over an IP network. These connections are known as IP
aggregates. The IP aggregates operate over the UDP transport protocol. The quality of tributary
connections across the IP aggregate depends on the quality of service provided by the IP network. For
optimum performance the IP network should provide a guaranteed level of service - where a fixed
bandwidth is always available between the IP aggregate peers with minimum variation in latency. When
an IP quality of service scheme is in place in the IP network, the IP QoS edge router can identify the V100
IP aggregate frames either by address/port recognition, or by configuring the IP aggregate to generate
packets with a certain ToS (type of service) setting. The IP aggregate multiplexing protocol includes a
facility for re-ordering multiplexed packets that were mis-ordered within the IP network (typically due to
split-path routing with latency variation on the split paths). The IP aggregate can also be tuned to trade-
off multiplexing overhead versus latency. A multiplexing period specifies the frequency at which tributary
packets are multiplexed into IP packets over the IP network. A small multiplexing period will create a
larger number of smaller IP aggregate packets. A large multiplexing period will create a smaller number of
larger IP aggregate packets, thus reducing the IP header overhead at the expense of a greater
multiplexing latency.
V100 Versatile Multiplexer Technical Manual Version 2.2
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