Privacy and Security Notice
Archived Messages for CDEV_1997@cebaf.gov: Re: CA and EPICS_CA_ADDR_LIST
Re: CA and EPICS_CA_ADDR_LIST
Jeff Hill (johill@lanl.gov)
Fri, 30 May 1997 18:07:25 -0600
> setenv EPICS_CA_ADDR_LIST "129.57.160.18 129.57.160.19 129.57.160.15
> 129.57.160.16 129.57.236.69 129.57.236.67 129.57.236.111"
>
> I need to get things from all these IOC's, and will soon have to add
> more. I am not on the subnet for any of them.
>
> It seems like the 2nd half of the addr list is ignored. I.e. I can
> read from IOC's up to 129.57.160.16 (I think), but not from the rest
> of the list. If I move an address from the end to the beginning, I
> can read from that IOC, but lose one down the line.
>
> It looks like there's a character limit on EPICS_CA_ADDR_LIST. If so,
> can it be increased dramatically?
>
This is fixed in EPICS 3.13. It should be possible to patch 3.12.2 to
remove
this problem also. It is also possible to use hex to specify an IP address
as Johnny mentioned in order to use less characters in the short term.
> Is it possible to specify a subnet mask, as many addresses are on the
> same subnet?
If your routers support broadcast forwarding then it is also possible to
specify
a broadcast address in this list such as "129.57.236.255".
Jeff