I've been trying to get some ALPS working, just out of plain curiousity - no
this isn't a Friday Funny - and I hit a roadblock.
If you take a look at ...
http://www.cisco.com/en/US/products/sw/iosswrel/ps1835/products_configuratio
n_guide_chapter09186a00800ca776.html
.. you can see that it seems pretty straightforward. I set up some ALPS
local and remote peers, verified that they saw each other. I then set up an
ALPS circuit between them. But the ALPS circuit remains "INOP" due to not
having any ASCUs defined. (show alps circuit circuitid detail)
You're supposed to be able to configure ACSUs on serial interfaces, under
the interface configuration, by doing an "encapsulation alc", but I can't
get this option to show up. I've attempted to find an "encapsulation alc"
on serial interfaces on 2500s, mc3810s, 4700s, and 3600s that have ALPS
support on their various IOS versions and feature sets, with no success.
Then I read this really interesting link about ASCU addressing (6 bits!) at
..
http://www.cisco.com/en/US/tech/tk331/tk893/technologies_tech_note09186a0080
093d96.shtml
.. and it says that my serial interface must have a Cirrus controller.
It lists the following as the platforms:
Cisco 2500 with Cirrus interfaces (Cobra)
Cisco 3600 with Cirrus WIC card
Cisco 4500 with Cirrus interfaces
Cisco 2600 with Cirrus WIC (brand new platform, not currently tested)
I can't find any serial interfaces that have a cirrus controller. Does
anyone know which cards/ports have these? If you do a "show int serial0/0"
it should return that "Hardware is CD2430". I'd really like to get this
working for my own piece of mind, so any pointers would be appreciated.
Has anyone actually used ALPS in a production environment (or a lab
environment for that matter)?
-Brian
---------
Some definitions:
ASCU: Agent Set Control Unit. An airline reservations system terminal
controller
ALC : Airline Control protocol. Cisco's implementation that conforms to SITA
P1024B, a data-link layer polled protocol that runs in full-duplex mode over
synchronous serial (V.24) lines and uses the binary-coded decimal notation
(BCD) character set.
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=91759&t=91759
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