| Oracle® Communications EAGLE Database Administration - GTT User's Guide Release 46.7 E97332-02 |
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| Oracle® Communications EAGLE Database Administration - GTT User's Guide Release 46.7 E97332-02 |
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Flexible Final GTT Load Sharing provides more routing diversity for GTT traffic requiring final global title translation (the routing indicator in the message is SSN) than the load sharing arrangements provided by the mated applications without the Flexible GTT Load Sharing feature enabled. For the EAGLE to perform Flexible Final GTT Load Sharing, the Flexible GTT Load Sharing feature must be enabled and turned on.
Final Load Sharing Feature Only
With the Flexible GTT Load Sharing feature not enabled, the EAGLE load shares post-GTT destination point codes and subsystems when final global title translation is being performed by using the mated application (MAP) table. The destination point codes and subsystems in the MAP table can appear in the MAP table only once. The MAP table contains groups of point codes with a maximum of 100 point codes and subsystems in each group. This arrangement allows only one set of relationships to be defined between a given point code and subsystem and any other point codes and subsystems in the MAP group. All global title addresses in the GTT table that translate to a point code and subsystem in the given MAP group will have the same set of load sharing rules applied.
For example, the following point codes, subsystems, and relative cost values are provisioned in the MAP table.
PCA Mate PCA SSN RC MULT SRM MRC GRP NAME SSO
005-005-005 251 10 SHR *Y *Y grp01 OFF
006-001-001 254 10 SHR *Y *Y grp01 OFF
006-001-002 254 10 SHR *Y *Y grp01 OFF
006-001-003 254 10 SHR *Y *Y grp01 OFF
006-001-004 254 10 SHR *Y *Y grp01 OFF
006-001-005 254 10 SHR *Y *Y grp01 OFF
006-001-006 254 10 SHR *Y *Y grp01 OFF
006-001-007 254 10 SHR *Y *Y grp01 OFF
When the point code and subsystem in the final global title translation is translated to 005-005-005, subsystem 251, all traffic routed using the global title addresses in the final global title translations containing this point code and subsystem are load shared equally, no matter what the global title address is.
Addition of Flexible GTT Load Sharing Feature
When the Flexible GTT Load Sharing feature enabled and turned on, allowing Flexible Final GTT Load Sharing to be performed, the GTT load sharing arrangements are determined by:
When a global title address in a final global title translation is translated to a point code and subsystem, the MAP set assigned to the final global title translation containing the translated point code and subsystem determines how load sharing is applied to the traffic for this final global title translation.
Solitary
A solitary MAP set contains only one point code and subsystem and no mate point codes and subsystems. Traffic can be routed only to this point code and subsystem.
rtrv-map command for a solitary map
set.
MAPSET ID=1 MRNSET ID=---- MRNPC=----------- PCI Mate PCI SSN RC MULT SRM MRC GRP NAME SSO WT %WT THR 7-111-1 255 10 SOL *N *N -------- OFF – --- ---
Dominant
All the point codes in a dominant MAP set have different relative cost values. The translated point code and subsystem in the message is the preferred point code and subsystem that the message is routed on. The relative cost value assigned to the preferred point code and subsystem does not have to be the lowest value in the MAP set. All traffic is routed to the preferred point code and subsystem if it is available. If the preferred point code and subsystem becomes unavailable, the traffic is routed the next alternate point code and subsystem that is available. When the preferred point code and subsystem becomes available again, the traffic is then routed back to the preferred point code and subsystem.
rtrv-map command for a dominant map
set.
MAPSET ID=30
PCA Mate PCA SSN RC MULT SRM MRC GRP NAME SSO
254-007-221 218 10 COM YES *Y -------- OFF
254-007-220 234 15 COM YES *Y -------- OFF
254-007-219 250 20 COM YES *Y -------- OFF
254-007-234 10 25 COM YES *Y -------- OFF
254-007-233 26 30 COM YES *Y -------- OFF
254-007-232 42 35 COM YES *Y -------- OFF
254-007-231 58 40 COM YES *Y -------- OFF
254-007-230 74 45 COM YES *Y -------- OFF
In this example, the preferred point code and subsystem is
254-007-231, subsystem 58 (relative cost 40). If that point code and subsystem
becomes unavailable, the traffic is routed down the list to the next available
point code and subsystem (relative cost 45). If that point code and subsystem
becomes unavailable, the traffic is routed to the top of the list to that
primary point code and subsystem (relative cost 10), and so on.
Load shared
All the point codes and subsystems in a load shared MAP set have the same relative cost value. Traffic is shared equally between the point codes and subsystems in this type of MAP set.
rtrv-map command for a load shared map
set.
MAPSET ID=32
PCA Mate PCA SSN RC MULT SRM MRC GRP NAME SSO
254-007-219 250 10 SHR *Y *Y -------- OFF
254-007-234 14 10 SHR *Y *Y -------- OFF
254-007-233 26 10 SHR *Y *Y -------- OFF
254-007-232 42 10 SHR *Y *Y -------- OFF
254-007-231 58 10 SHR *Y *Y -------- OFF
254-007-230 74 10 SHR *Y *Y -------- OFF
254-007-229 90 10 SHR *Y *Y -------- OFF
254-007-228 106 10 SHR *Y *Y -------- OFF
254-007-227 122 10 SHR *Y *Y -------- OFF
254-007-226 138 10 SHR *Y *Y -------- OFF
254-007-225 154 10 SHR *Y *Y -------- OFF
254-007-224 170 10 SHR *Y *Y -------- OFF
254-007-223 186 10 SHR *Y *Y -------- OFF
254-007-222 202 10 SHR *Y *Y -------- OFF
254-007-221 218 10 SHR *Y *Y -------- OFF
254-007-220 234 10 SHR *Y *Y -------- OFF
Combined dominant/load shared
A combined dominant/load shared MAP set is a combination of the dominant and load sharing MAP sets. At least two of the point codes and subsystems in this MAP set have the same relative cost values, and at least one other point code and subsystem has a different relative cost value. The traffic is shared equally between the point codes and subsystems with the same relative cost values. If these point codes and subsystems become unavailable, the traffic is routed to the next point codes and subsystems in the MAP set and shared equally between these point codes and subsystems.
rtrv-map command for a combined
dominant/load shared map set.
MAPSET ID=31
PCA Mate PCA SSN RC MULT SRM MRC GRP NAME SSO
254-007-220 234 10 COM YES *Y -------- OFF
254-007-219 250 10 COM YES *Y -------- OFF
254-007-234 10 10 COM YES *Y -------- OFF
254-007-233 26 10 COM YES *Y -------- OFF
254-007-228 106 10 COM YES *Y -------- OFF
254-007-227 122 10 COM YES *Y -------- OFF
254-007-226 138 10 COM YES *Y -------- OFF
254-007-225 154 10 COM YES *Y -------- OFF
254-007-232 42 20 COM YES *Y -------- OFF
254-007-231 58 20 COM YES *Y -------- OFF
254-007-230 74 20 COM YES *Y -------- OFF
254-007-229 90 20 COM YES *Y -------- OFF
254-007-224 170 20 COM YES *Y -------- OFF
254-007-223 186 20 COM YES *Y -------- OFF
254-007-222 202 20 COM YES *Y -------- OFF
254-007-221 218 30 COM YES *Y -------- OFF
In this example, if the preferred point code is 254-007-231,
subsystem 58 (relative cost 20), then the traffic is shared among the seven
point codes/subsystems with a relative cost of 20. If those become unavailable,
the traffic is sent to 254-007-221, subsystem 218, which has a relative cost of
30. Finally, if point code 254-007-221, subsystem 218 is unavailable, the
traffic is shared among the point codes/subsystems with a relative cost of 10.
Point Code Assigned to Multiple MAP Sets
With the Flexible GTT Load Sharing feature enabled, the same point code and subsystem can be assigned to multiple MAP sets. The relative cost value of this point code and subsystem in each MAP set can be different.
MAPSET ID=1 PCA Mate PCA SSN RC MULT SRM MRC GRP NAME SSO 002-002-002 254 10 COM YES *Y -------- OFF 254-007-219 250 20 COM YES *Y -------- OFF 254-007-234 10 25 COM YES *Y -------- OFF 254-007-233 26 30 COM YES *Y -------- OFF 254-007-232 42 35 COM YES *Y -------- OFF 254-007-231 58 40 COM YES *Y -------- OFF 254-007-230 74 45 COM YES *Y -------- OFF MAPSET ID=2 PCA Mate PCA SSN RC MULT SRM MRC GRP NAME SSO 254-007-219 250 20 SHR *Y *Y -------- OFF 254-007-234 14 20 SHR *Y *Y -------- OFF 254-007-233 26 20 SHR *Y *Y -------- OFF 254-007-232 42 20 SHR *Y *Y -------- OFF 002-002-002 254 20 SHR *Y *Y -------- OFF 254-007-230 74 20 SHR *Y *Y -------- OFF 254-007-229 90 20 SHR *Y *Y -------- OFF 254-007-228 106 20 SHR *Y *Y -------- OFF MAPSET ID=3 PCA Mate PCA SSN RC MULT SRM MRC GRP NAME SSO 004-004-004 200 20 COM YES *Y -------- OFF 254-007-219 250 20 COM YES *Y -------- OFF 254-007-234 10 30 COM YES *Y -------- OFF 254-007-233 26 30 COM YES *Y -------- OFF 002-002-002 254 30 COM YES *Y -------- OFF 254-007-227 122 40 COM YES *Y -------- OFF 254-007-226 138 40 COM YES *Y -------- OFFIn MAP set 1, point code 002-002-002, subsystem 254, is the primary (first) point code and subsystem in a dominant MAP set with a relative cost value of 10. In MAP set 2, point code 002-002-002, subsystem 254, is one of eight point codes and subsystems in a load shared MAP set, each with a relative cost value of 20. In MAP set 3, point code 002-002-002, subsystem 254, is assigned the relative cost value of 30 in a combined dominant/load shared MAP set whose primary point code and subsystem is 004-004-004, subsystem 200, with a relative cost value of 20.
MAP set 1 is assigned to a global title translation containing the global title address of 9195551212. When the point code and subsystem in this final global title translation is translated to 002-002-002, subsystem 254, this point code and subsystem handles all the traffic for this final global title translation until it becomes unavailable. When point code 002-002-002, subsystem 254 becomes unavailable, the next point code and subsystem (254-007-219, subsystem 250) in this dominant MAP set handles the traffic until this point code and subsystem become unavailable, or until point code 002-002-002, subsystem 254 becomes available again.
MAP set 2 is assigned to a global title translation containing the global title address of 8285551212. When the point code and subsystem in this final global title translation is translated to 002-002-002, subsystem 254, the traffic for this final global title translation is shared equally among all members of the MAP set.
MAP set 3 is assigned to a global title translation containing the global title address of 3365551212. When the point code and subsystem in this final global title translation is translated to 002-002-002, subsystem 254, the traffic for this final global title translation is shared equally among all members of the MAP set with the relative cost value of 30, including point code 002-002-002, subsystem 254. When all of these point codes and subsystems with a relative cost value of 30 become unavailable, the traffic is shared equally among all the point codes and subsystems with the relative cost value of 40. If those with a relative cost of 40 also become unavailable, the traffic is shared equally among all the point codes and subsystems with the relative cost of 20.
By allowing a point code and subsystem to be assigned to multiple MAP sets, and by assigning a MAP set to a specific global title address, different load sharing arrangements can be made based on the global title address of the global title translation and the translated point code and subsystem.
The same MAP set can be assigned to multiple global title translations.
For the EAGLE to perform Flexible Final GTT Load
Sharing, the Flexible GTT Load Sharing feature must be enabled with the
enable-ctrl-feat command, and turned
on with the
chg-ctrl-feat command. Perform the
Activating the Flexible GTT Load Sharing Feature
procedure to enable and turn on the Flexible GTT Load Sharing feature.
The Flexible GTT Load Sharing feature can also be turned
off with the
chg-ctrl-feat command. If the Flexible
GTT Load Sharing feature is turned off, provisioning for Flexible Final GTT
Load Sharing can be performed with the
ent-map,
dlt-map,
chg-map, and
rtrv-map commands. The EAGLE will not
perform Flexible Final GTT Load Sharing on GTT traffic requiring final global
title translation. Perform the
Turning Off the Flexible GTT Load Sharing Feature
procedure to turn off the Flexible GTT Load Sharing feature.
