Appendix A Engineering Rules

Appendix A
Engineering Rules
 
This section provides engineering rules or guidelines that must be considered prior to configuring the system for your network deployment.
 
This appendix describes following engineering rules for GGSN service:
 
APN Engineering Rules
The following engineering rules apply to APNs:
DHCP Service Engineering Rules
The following engineering rule applies to the DHCP Service:
GGSN Engineering Rules
The following engineering rules apply when the system is configured as a GGSN:
GRE Tunnel Interface and VRF Engineering Rules
The following engineering rules apply to GRE tunnel interface and VRF contexts:
GTP Engineering Rules
The following engineering rules apply to GTP on GGSN:
Interface and Port Engineering Rules
The rules discussed in this section pertain to both the Ethernet 10/100 and Ethernet 1000 Line Cards and the four-port Quad Gig-E Line Card (QGLC; ASR 5000 only) and the type of interfaces they facilitate.
Pi Interface Rules
FA to HA Rules
When supporting Mobile IP, the system can be configured to perform the role of a FA, an HA, or both. This section describes the engineering rules for the Pi interface when using the system as a FA.
 
The following engineering rules apply to the Pi interface between the FA and HA:
 
HA to FA
The following engineering rules apply to the Pi interface between the HA and FA:
 
 
GRE Tunnel Interface Rule
 
The following engineering rules apply to the GRE tunnel interface between two GRE tunnel nodes:
Lawful Intercept Engineering Rules
The following engineering rules apply to Lawful Intercept on supported AGW service:
MBMS Bearer Service Engineering Rules
The following engineering rules apply to MBMS bearer services:
Service Engineering Rules
 
The following engineering rules apply to services configured within the system:
Caution: Large numbers of services greatly increase the complexity of management and may impact overall system performance (i.e. resulting from such things as system handoffs). Therefore, it is recommended that a large number of services only be configured if your application absolutely requires it. Please contact your local service representative for more information.
Caution: Even though service names can be identical to those configured in different contexts on the same system, this is not a good practice. Having services with the same name can lead to confusion, difficulty in troubleshooting the problems, and make it difficult to understand outputs of show commands.
Subscriber Engineering Rules
 
 
The following engineering rule applies to subscribers configured within the service:
 

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