RESILENT LINKS: GB1WHT failure recovery

This is the main backbone switch installed at the ORM. Is located at the WHT computers room, communications rack. This device connects the main switches at the WHT, gives connectivity to the INT and JKT telescopes and has a connection to the IAC/Internet trough La Recidencia. The ORM main firewall is also connected to this device.

If this device fails, major problems will occur in the ING network, including all the services like Internet access, access to the SLO, Home accounts, WWW, FTP, remote access, DNS to external sites, etc. The observing system should continue working but with limitations like on line weather information, documentation access, etc.

Before following the next steps is a good idea to power cycle gb1wht to see if that fixes the problem.

The spare for this device is gb2wht, on top of it, and the procedure to use it instead of gb1wht is as follows:

1. Switch off gb1wht.

2. Disconnect UTP cables 1,2,3 and 4 from gb2wht.

3. Move front UTP cables from gb1wht to gb2wht as described in this table:

   From	To
   gb1wht 1	gb2wht 2
   gb1wht 2	gb2wht 2
   gb1wht 3	gb2wht 3
   gb1wht 4	gb2wht 4
   gb1wht 5	gb2wht 5
   gb1wht 6	gb2wht 6
   gb1wht 7	gb2wht 7
   gb1wht 9	gb2wht 9
   gb1wht 10	gb2wht 10

4. Move back fiber cables from gb1wht to gb2wht as described in this table:

From	To
gb1wht 13 (RES)	gb2wht 13
gb1wht 14 (JKT)	gb2wht 14
gb1wht 16 (SLO)	gb2wht 16

After this is done, it takes a few minutes for the network to come back again.

Any question regarding this document, contact Luis Hernandez