[Info-vax] terminal servers etc

[Peter 'EPLAN' LANGSTOeGER]

In article <kcakc6$4lr$1 at news.albasani.net>, Jan-Erik Soderholm <jan-erik.soderholm at telia.com> writes:
>We are also moving all LAT into Telnet sessions. Note, these
>are not for terminals, it's VMS that inits the connection to
>the ports and detached apps connects the the LTA/TNA devices.

Remember there is a slightly different implentation of Reverse-LAT
and Reverse-TELNET (which I want to have changed for decades now ;-)
and this also slightly differently in TCPIP and TCPware (sigh)...

*) Reverse-TELNET requires the destination (IP) node to be reachable
(at the creation time of the TNA/NTA device - instead of at the time
of assigning a channel to the device like with Reverse-LAT) 
e.g. How to create the TNA device at startup time, when remote systems
are not there yet?

*) Reverse-TELNET device gets lost/zombie if connection gets lost
(instead of communication gets lost and can be re-assigned - like with LAT)
e.g. how to autofix this, when a router reboots?

*) Reverse-TELNET dissolves a node out of a group (like BIND/DNS multiple A RR)
at device creation time - instead of at the time of assigning a channel
to the device like with Reverse-LAT - means METRIC can't work like
LAT service and/or LAT rating does)

*) Reverse-TELNET doesn't offer a wait for the connection to be established
like what LAT-Queueing offers

*) Reverse-TELNET doesn't offer a way to show where the TNA/NTA device
is configured to - like LATCP SHOW PORT does.
No, wait, you *do* know, what you configured, right?)


We still have no answer, why engineering (UCX and also TCPware) designed
it this way it exists now, instead of taking the long standing and good
working LAT(CP tool) taking as an example of how to be done correctly
(e.g. one tool instead of now TELNET/CREATE and what next SSH/CREATE ?)


Some of the bad behaviour of Reverse-TELNET might (and probably) have
changed/improved over the years (and versions of the different IP stacks) -
but I bet, they are still not as good as Reverse-LAT already was decades ago...

So, think again, if you really want to get rid of LAT...
just my 0.02

-- 
Peter "EPLAN" LANGSTÖGER
Network and OpenVMS system specialist
E-mail  Peter at LANGSTOeGER.at
A-1030 VIENNA  AUSTRIA              I'm not a pessimist, I'm a realist