System Constraints Affecting Total IP Signaling Capacity

Previous sections focused on the Maximum and Advertised Capacity of particular applications on particular cards for various configurations. This section focuses on constraints involved in using multiple IP signaling cards and applications.

Table 5-16 IPLIMx and IPGWx Connectivity Data

Feature	IPLIM	IPGWx	Notes
Cards per system	250	250	Worst-case inter-shelf IMT utilization is a key factor. Total number IPLIMx cards cannot exceed 250.
Link connectivity type	Point to point (1 connection per link)	Point to multipoint	---
Link type replacement	Any	A	---
Typical application	Interconnect transfer point	Interconnect a front-end SS7 gateway to a back-end service element	---
Links per card	8/16	1/1	Worst-case inter-shelf IMT utilization is a key factor. Virtual signaling link. Terminates SS7 network (IPGWx)
Links per link set	16	8	Assumes unmated configuration. Link set defines the scope of a mateset/SG. If mated, then only one link is allowed in the link set.
Supports combined link sets	Yes	No	---
IP connections per system	4000	4000	---
IP connections per card	8/16	50/50	SCTP associations
Routing keys per system	---	2,500	---
IP connections per routing key	---	16	---
Application Servers per system	---	250	---
Associations per Application Server	---	16	---
Ethernet interfaces per card	2	2	Uni-homed connection on either interface, multi-homed using both interfaces
EAGLE Hardware Redundancy Model	2N	2N	---
Capacity (TU)	2000/4000 MSU/s	2000/4000 MSU/s
Failure mode (80%)	1600/3200 MSU/s	1600/3200 MSU/s	Capacity growth required at this point
Multi-homing support	Yes	Yes	---
Connection model	Peer to peer	Server	---
SS7 routing	Traditional least-cost based	Two-step traditional SS7 least-cost plus route keys	---
Supports lossless	Yes	No	IPGWx relies on SCTP changeover for sequencing
Supports network management	Yes	Yes	---
Number of DTA Point Codes	1	1	Implies one IPGWx mateset if DTA PC route involves IPGWx link set
Number of internal point codes per network	1	1	Implies one IPGWx mateset per network domain for end-office mode of operation
IPTPS for System	---	Purchase quantity	Total pool of capacity distributed by user across IPGWx link sets
IPTPS per IPGWx link set	---	System IPTPS	---
IPTPS per IPGWx signaling link	---	Link set IPTPS	---
IMT Inter-Shelf Capacity, each bus, ring topology	1 GB/sec	1 GB/sec	Full-Duplex

Table 5-17 IPSG Connectivity Data

Feature	M2PA	M3UA	Notes
Cards per system	250	250	Worst-case inter-shelf IMT utilization is a key factor. Total number of E5-ENET/ENET-B cards for IPLIMx cannot exceed 250. The number of IPSG (including SLIC) cards that can be provisioned depends on various conditions, assuming each card is hosting links/linksets with max card capacity TPS values. See
Link connectivity type	Point to point (1 connection per link)	Point to multi-point	---
Link type replacement	Any	Any	---
Typical application	Interconnect transfer point	Interconnect a front-end SS7 gateway to a back-end service element	---
Links per card	32	32	Worst-case inter-shelf IMT utilization is a key factor. Virtual signaling link. Terminates SS7 network (IPGWx)
Links per link set	16	16	Assumes unmated configuration. Link set defines the scope of a mateset/SG. If mated, then only one link is allowed in the link set.
Supports combined link sets	Yes	Yes	---
IP connections per system	4000	4000	---
IP connections per card	32	32	SCTP associations
Routing keys per system	---	---	---
IP connections per routing key	---	---	---
Application Servers per system	---	---	---
Associations per Application Server	---	---	---
Ethernet interfaces per card	2	2	Uni-homed connection on either interface, multi-homed using both interfaces
EAGLE Hardware Redundancy Model	2N	2N	---
Capacity (TU)	5000 MSU/s (E5-ENET card) 6500 MSU/s (E5-ENET-B when IPSG High Throughput Feature OFF, E5-ENET) 9500 MSU/s (E5-ENET-B card with E5-ENET-B IPSG High Throughput feature ON)	5000 MSU/s (E5-ENET card) 6500 MSU/s (E5-ENET-B when IPSG High Throughput Feature OFF, E5-ENET) 9045 MSU/s (E5-ENET-B card with E5-ENET-B IPSG High Throughput feature ON)
Failure mode (80%)	4000 MSU/s (E5-ENET card) 5200 MSU/s (E5-ENET-B when IPSG High Throughput Feature OFF,) 7600 MSU/s (E5-ENET-B card with E5-ENET-B IPSG High Throughput feature ON)	4000 MSU/s (E5-ENET card) 5200 MSU/s (E5-ENET-B when IPSG High Throughput Feature OFF,) 7236 MSU/s (E5-ENET-B card with E5-ENET-B IPSG High Throughput feature ON)	Capacity growth required at this point
Multi-homing support	Yes	Yes	---
Connection model	Server	Server	---
SS7 routing	Peer to peer	Traditional least-cost based	---
Supports lossless	Yes	No	---
Supports network management	Yes	Yes	---
Number of DTA Point Codes	1	1	---
Number of internal point codes per network	1	1	---
IPTPS for System	---	---	Total pool of capacity distributed by user across IPSG link sets
IPTPS OR M3UA link set	---	System IPTPS	---
IPTPS Signaling link	---	Link set IPTPS	---
IMT Inter-Shelf Capacity, each bus, ring topology	1 GB/sec	1 GB/sec	Full-Duplex
Maximum TPS per E5-ENET IPSG linkset	80000	8000	M3UA or M2PA
Maximum TPS per E5-ENET-B IPSG linkset with E5-ENET-B IPSG High Throughput feature turned OFF	104000	104000	M3UA or M2PA
Maximum TPS per E5-ENET-B IPSG linkset with E5-ENET-B IPSG High Throughput feature turned ON	152000	---	M2PA
Maximum TPS per SLIC IPSG linkset	160000	160000	M3UA or M2PA

Note:

If an E5-ENET-B card is used and the E5-ENET-B IPSG High Throughput Capacity feature is turned ON, then the card must operate within the limits described in Table 5-5 or the card will de-rate.