3Com CT1 Release Note - page 4
4
QoS:
• Now, when a hardware encryption card (NDEC) is installed and QoS (Quality of
Service) is enabled, the NDEC module will handle the QoS processing.
The following features are included in this Release
1. Dynamic Routing Standby
Dynamic routing standby is a new backup approach that mainly uses legacy DCC
to dynamically maintain dial links. In other words, it is a route-based dial backup.
By making use of convergence time and related features of dynamic routing
protocols, dynamic routing standby perfectly combines backup and routing. Thus, it
breaks the limitation of interesting packet-triggered dial in legacy DCC and provides
reliable connection and standard dial-on-demand service.
Dynamic routing standby is suitable for situations involving multiple interfaces and
routers, since both primary and secondary interfaces can be of any interface type.
Dynamic routing standby does not depend on a particular route protocol, and can run
RIP1, RIP2, OSPF, etc. It does not depend on interesting packets to trigger dial, thus
the secondary link will start automatically when the primary link disconnects without
dialing delay (excluding route convergence time).
You can configure and manage the dynamic routing standby feature using the
following CLI commands:
standby routing-group group-number
undo standby routing-group group-number
standby routing-rule group-number ip ip-address address-mask
Undo standby routing-rule group-number
standby routing-check group-number timer seconds
undo standby routing-check group-number
standby routing-disable seconds
undo standby routing-disable
2. X.25 CUG
The X.25 protocol is the interface procedure between the data terminal equipment
(DTE) and data circuit-terminating equipment (DCE). With X.25, two DTE devices
can communicate with each other via the existing telephone network. DTE usually
refers to the host or terminal at the user side and DCE usually refers to the
synchronous modem.
http://www.3com.com/
Part No.
10014533
Published August 2004