Notice No20220806-2Notice Date06 Aug 2022
SubjectLive trading Session from Disaster Recovery (DR) site – Equity Derivatives Segment

Trading Members may kindly note that the Exchange shall be conducting Live Trading Sessions    for its Equity Derivatives Segment from its Disaster Recovery Site has per the below mentioned schedule


Trading Sessions




Monday, 08th August'2022 to Friday, 12th August'2022

Live Trading

Disaster Recovery (DR)

Normal Market Timings


Saturday, 13th August'2022

Mock Trading

Primary Location (PR)

Will be intimated in separate circular



All leased line terminal users, accessing BSE applications for trading and related functions are requested to add below mentioned secondary DNS entry in your terminal.  This is one-time change.


Currently, only Preferred DNS server IP is mentioned i.e.  Now, one more IP needs to be added as Secondary DNS in Alternate DNS server –


Below is a view of terminal after adding secondary DNS.


With the addition of secondary DNS entry it will help in seamless resolution of leased line based URLs when operating from Primary site or from Disaster site




Changes in DR Connection Parameters

Trading members shall be required to set the technical connection parameters of the Hyderabad DR site at their end, if not done already. These parameters are enclosed herewith as Annexure 1.


Trading members connecting to the BOLT Plus trading system using BOLT TWS/IML can change the settings in the configuration setting window. Trading members connecting through ETI shall have to set up the DR connection parameters in their ETI based trading application, as appropriate.


Kindly note that in absence of this setting, trading members will not be able to connect to the trading system. Hence, trading members are requested to configure these settings in their respective trading applications in advance and continue the same from Monday, 08th August’2022 onwards till Friday, 12th August’2022.



Further, trading members may kindly note that it is recommended to maintain DR site connection parameters provided in Annexure 1, in their trading application for live trading session from DR site, as mentioned above. 


Connecting to DR Site of other Exchange systems

i.        Trading members can connect to other Exchange web-based systems like RTRMS, ZT, CLASS collateral, Extranet, etc through the weblinks (url) provided in the enclosed Annexure 2 using their existing user id & password.


ii.      To connect the online trade file application, members shall have to change the remote server IP & port settings in the setting.ini file as per the DR connection parameters provided in Annexure 2.  


The Exchange shall be conducting mock trading session on Saturday, August 13th, 2022 from the PR site for members to check the PR connectivity and facilitate smooth live trading session on Tuesday, August 16th, 2022. Details of this mock trading session shall be provided via a separate circular.


In case of any queries or clarifications, trading members may kindly get in touch with their respective Relationship Manager or contact either the BSE Helpdesk or the IML Info/ IML Tech Support team teams for any clarification/ queries on this circular-



TWS users and IML users (third party empaneled vendors & in-house system developers)

IML Tech Support


Help Desk

022-45720400/600 & 022-69158500;     




For & On Behalf of BSE Ltd,


Ketan Jantre

Sandeep Pujari

Sr. GM-Trading operations

DGM – Trading Operations