Discontinuation of additional multicast streams for equity derivatives segment from Disaster Recovery Site (DR)

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NOTICE Notice No. 20260616-21 Notice Date 16 Jun 2026 Category Trading Segment Derivatives Department Trading Operations Subject Discontinuation of additional multicast streams for equity derivatives segment from Disaster Recovery Site (DR) Attachments No Attachment Exchange vide notice number 20241221-2 dated 21 Dec 2024 has introduced additional multicast stream for EDX segment from Disaster recovery site. The additional multicast stream was introduced with some changes to reduce the packet drops as members experienced very frequent packet drops on existing stream while trading from DR. The additional streams were available in colocation center only. Over a period, Exchange has done optimisation on its network, and the quality of data has been improved, and it has been observed in last 2 live trading from DR site that there has been no substantial drops of packets on existing streams of multicast and the drop count is similar on existing and additional multicast streams. Therefore, there is no value addition in continuing the additional stream of multicast also operating multiple streams for same data set would increase the bandwidth consumption at exchange. Thus, it is planned to discontinue the additional multicast stream for EDX segment from Disaster recovery site from immediate effect and it would not be available in future during DR mocks and live trading from DR. The Multicast IP addresses of the additional streams are mentioned below for your reference. Incremental Snapshot Stream Service A Service A Partition 1 238.0.0.84 238.0.0.65 15984 15965 Partition 2 238.0.0.66 238.0.0.67 15966 15967 Partition 3 238.0.0.68 238.0.0.69 15968 15969 Partition 4 238.0.0.70 238.0.0.71 15970 15971 Partition 5 238.0.0.72 238.0.0.73 15972 15973 Partition 6 238.0.0.74 238.0.0.75 15974 15975 Partition 7 238.0.0.76 238.0.0.77 15976 15977 Partition 8 238.0.0.78 238.0.0.79 15978 15979 Partition 9 238.0.0.80 238.0.0.81 15980 15981 Partition 10 238.0.0.82 238.0.0.83 15982 15983 There will no change in the existing multicast streams IP and ports. The continue to remain same and common for Primary site (PR) and Disaster Recovery Site (DR). For & on behalf of BSE Ltd, Ketan Jantre Nawaid Pathan Head – Trading Operations VP – Information Technology Projects