Fabric Replacement May Require A Software Patch - Nortel 15000 Hardware Description

Fabric replacement may require a software patch

When a fabric NTHR16 with version EA (NTHR16EA) is to be inserted into a
Multiservice Switch 15000 as a replacement for a fabric that does not have the
EA or later version, software on the switch should have either the fabric feature
or a patch that enables the operation of the EA version. The feature or patches
remove nuisance alarms for firmware mismatch between the two fabrics and
allow fabric firmware upgrade on the NTHR16EA should it be required in the
future.
The software feature is in PCR 6.1 GA or later software loads, and PCRs 5.1.4
or 5.2.3. Any other PCR prior to 6.1 GA requires a software patch. The patch
identifier is baseFTxxxxAyyyyyy, where xxxx is the sequence number and
yyyyyy is the load name. The procedure to check whether the software has
the patch and the procedure to load the patch are in NN10600-272 Nortel
Networks Multiservice Switch 7400/15000/20000 Upgrading Software, the
procedure for applying a patch.
Compared to its predecessors, the NTHR16EA fabric:
• also has 40 Gbit/s user capacity and Class B compliance
• needs CP3 processor cards to operate (NTHW08 or NTHW06)
• has the same external design and method of installation
• has a significantly lower power consumption (almost half)
• has increased backplane signaling from 1.5 V to 1.8 V
• has a larger shared memory buffer
• has a deeper queuing buffer
• has less congestion
• has better multicasting
Refer to the table
card pre-NTHR16EA (page
Copyright © 2005, Nortel Networks
- 86 -
Shelf assembly
Features of a 40 Gbit/s Multiservice Switch 15000 fabric
76).
Nortel Networks Multiservice Switch 15000/20000
Hardware Description
NN10600-120 sPCR6.1S1 Standard
sPCR6.1 February 2005
Nortel Networks Confidential