The base transaction unit rules are applied to establish the base transaction unit costs:
- Sufficient IP TPS is assigned to the linkset to which the IPGWx signaling link is assigned. (IPGWx only) or sufficient IP TPS (both Reserved and Max SLKPTS is assigned to each link of an IPSG linkset.
- The traffic is not monitored via the E5IS or Fast Copy features.
- For IPGWx and IPLIMx, the percentage of received traffic that triggers the enabled EAGLE SCCP Class-1 Sequencing feature is less than or equal to 50%.
- For IPSG, none of the received traffic triggers the enabled Eagle SCCP Class-1 Sequencing feature.
- The IP packet-loss rate is 25 per 100,000 or less.
- The IP connection message buffer memory is of a sufficient size on the local SCTP association and peer network elements to sustain traffic for the network's RTT and worst-case packet loss.
- The IP connection retransmission mode must be linear (
RMODE=LIN) for SCTP associations.
- The IP connection retransmit time-out is configured to a value that is appropriate for the expected network latency (RMIN for SCTP associations).
- Number of open IP connections is less than or equal to 8 (IPGW links) or 16 (IPSG links).
- Number of active SLKs is less than or equal to half the maximum supported on the IPLIMx card (<=8 for E5-ENET or E5-ENET-B).
- M2PA Timer
T7 (Excess Delay in ACK) is configured to have a value appropriate for the expected network latency (IPLIMx and IPSG M2PA links).
- The IP connection minimum congestion window (CWMIN) is configured to an appropriate value to achieve the target IP TPS on the link.
- The peer network element acknowledgment timer (SACK timer) is set to an appropriate value in correlation with the local IP connection RMIN and the expected network latency.
