Cabletron Systems FRM, User Manual

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12-16 Frame Relay Module 4. 0 User G uide, Rev 01
Routing Algorithm
allows creation of a "hunt group" of ports (see example on page 8-24 ), for the purpose
of routing per a pre-selected algorithm:
0
= Round Robin – selects ports specified cyclicly in numerical order according
to the list of Redirection Addresses. If the selected port is unreachable or con-
gested, the Call Request will be sent to the next port. (If the port becomes
available again, it will be included in its assigned position.)
1
= Alternate Route on Line Failure – selects the first port that is not in a failed
state. If the selected port does not make a connection, the call will be cleared, even
if other ports are available.
2
= Alternate Route on Line Busy – selects the first port that has LCNs available
(is not busy). If the port has failed, the next available port will be selected.
3
= Least LCN with Throughput – selects the line with the minumum loading, cal-
culated by weight and number of LCNs in use on that line. (Each line is assigned
a weight proportional to its throughput within the routing path.)
If use of a routing algorithm is not desired, simply accept the default, and specify only
one routing path.
Systematic Redirection
will redirect (if
Y
) all calls to Redirection Address 0 instead of the primary address. If
that address cannot be reached and
Redirect on Busy
and/or
Redirect on Out of Order
are set to
Y
, a call will be placed to Redirection Address 1, then (if necessary) Redi-
rection Address 2, and so on.
Redirect on Busy
will redirect calls (if
Y
) according to the Redirection Addresses if the current sub-
scriber has no LCNs available.
Redirect on Out of Order
will redirects calls (if
Y
) according to the Redirection Addresses if the if the current
subscriber’s port is out of order.
Connection Priority
prioritizes intra-nodal traffic; the higher the number, the higher the priority. (This pri-
ority has no effect on traffic exiting a node.)
Priorities are configured on all logical interfaces that use a physical frame relay port.
The device processor in the node uses these priorities to help determine the order in
which it will process protocols.
When configuring priorities, be careful to consider the types of
traffic being routed on other connections in the node.
1st, 2nd,etc. Path Configured
includes or excludes the associated RLP/port as a routing path to the subscriber
device. At least one path must be specified.
RLP
is the RLP containing the port specified for the next parameter.