Chapter 2: EIU messaging protocols 61
router is determined based on the simple load balancing rules and the status of the router.
IP Screening
Packets destined for the Supernode can be screened at the IP level. If the source of the packet is determined to be invalid, the packet is dropped by the EIU. For more information, refer to data schema table EXNDINV in this document.
Protocol engineering
This section provides information on engineering rules and data for each of the protocol layers. It also contains discussions on the maintenance of the protocol stack and its performance.
IP throttling
IP throttle engineering is required to control congestion in the DS30 links. If the IP throttle is not properly engineered, the robustness of the LMS on which EIUs are located is compromised. This situation occurs because of the potentially large number of datagrams transferred between EIUs and SuperNode nodes across LMS.
IP (as a network layer protocol that transfers datagrams between EIUs and the SuperNode nodes) does not have
For information on table IPTHRON, refer to “Chapter 3: EIU datafill”. For more information on IP throttling, refer to “IP throttling” on page 65.
For information on EIU provisioning rules for LPP, SSLPP, and
TCP connection management
The TCP layer provides reliable delivery of the data to its remote peer through
•decreasing the allowed number of connections causes all connections to be dropped
•existing connections are maintained when you increase the number of connections
