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This soft copy for use by IBM employees only.
Note 1: Country Homologation dependency.
Table 6 (Page 2 of 2). ATM Physical Interface Support
Layer Rate (Mbps) Cable Coding A02 WAN
Support
STS-12c 622.08 UTP-5 (4 pairs) No
OC-3/STM-1 155.52 MMF/SMF NRZI Yes
STS-3c 155.52 MMF/SMF NRZI Yes
STS-3c 155.52 UTP-5/STP NRZI No
155 155.52 MMF 8B/10B No
155 155.52 STP 8B/10B No
TAXI 100 MMF 4B/5B No
STS-1 51.84 UTP-3 CAP-16 No
DS-3/T3 44.7 Coax (BNC) NRZI Yes
E3 34.4 Coax (BNC) NRZI Yes (Note 1)
E1 2.048 Bipolar-AMI NRZI No
T1 1.544 Bipolar-AMI NRZI No
25 25.6 UTP/STP 4B/5B No
4.8.2 VPD Installation Considerations
Each I/O card ships with a special VPD (vital product data) PROM
(Programmable Read-Only Memory) chip. Before you can install the A02 WAN
module, you must attach the I/O cards and install the VPD chips. Details on the
installation process can be found in
IBM 8260/8285 ATM WAN Module:
Installation and User
′
s Guide
. The following are a few additional considerations:
•
The VPD PROM sockets are next to their respective I/O cards. That is, the
left (or top) socket is matched with the left I/O card, while the right (or
bottom) socket is matched with the right I/O card. Arrows have been placed
on both sockets pointing to their respective I/O cards.
•
There is only one correct way to insert the VPD PROM in each socket. This
can be done by aligning the notch on the chip with the notch on the socket.
However, inserting the chip backwards will not damage it; the port simply
will not be able to register properly with the 8285 ATM Control Point.
Reversing the chip should solve the problem.
•
Any VPD PROM that ships with an A02 WAN I/O card can be used with any of
the other I/O cards without affecting card function. However, the card will
not be listed properly in the configuration, which could be very confusing to
someone managing the network. It is
strongly advised
that you carefully
match the VPD PROM part numbers with their respective I/O cards as listed
in Table 7 on page 69
68 ATM Workgroup Solutions: Implementing the 8285 ATM Switch