Cisco Cisco ASR 5000
Engineering Rules
▀ SGSN Interface Rules
▄ SGSN Administration Guide, StarOS Release 18
SGSN Interface Rules
The following information relates to the virtual interfaces supported by the SGSN:
System-Level
Table 64. System Rules on the SGSN
Features
Limits
Comments
Maximum supported size for IP packets (data) 1480
Maximum recovery/reload time
17 mins.
3G Interface Limits
Table 65. 3G Interface Rules for SGSN
Features
Limits
Comments
Maximum number of RNCs
See
comment
comment
Supports upto 256 directly connected RNC and 1024 indirectly connected
through gateways.
through gateways.
Maximum number of RNCs
controlling the same RA
controlling the same RA
no limit
Maximum number of RAIs per
SGSN
SGSN
16K
16K is the recommended max RAI per SGSN, however, there is no hard limit
imposed. Adding more RAIs may lead to memory issues.
imposed. Adding more RAIs may lead to memory issues.
Maximum number of RAIs per
RNC
RNC
2.5K
Maximum number of GTPU
addresses per SGTP service
addresses per SGTP service
12
2G Interface Limits
Table 66. 2G Interface Rules - Gb over Frame Relay
Features
Limits
Comments
Maximum number of NSEs
2048
Limit is total of FR + IP