[Devmon] Question on MATH transform

[Kauffman, T. <Kau...@ni...>]

One of the issues I have with the Brocade switches is the port numbering; the index value returned by the mib (swFCPortIndex) ranges in value from 1 to 32 (or whatever the highest value on the switch is). The ports are physically numbered from 0 to 31. I'd like the devmon reporting to match.

But this test isn't working:

OID:
swFCPortIndex    : .1.3.6.1.4.1.1588.2.1.1.1.6.2.1.1 : branch

Transform:
Port            : MATH          : {swFCPortIndex} - 1

Message:
Port|Interface|Outbound Words|Inbound Words
{swFCPortIndex}|{Port}|{swFCPortTXW}|{swFCPortRXW}

Gives me this error:
Can't use string ("No data.") as a HASH ref while "strict refs" in use at /usr/local/src/devmon-0.3.0/modules/dm_tests.pm line 1800, <$__ANONIO__> line 1455.

If I drop the 'Interface' header and '{Port}' value everything works just fine. (I'd really like to use '{Port}' in place of '{swFCPortIndex}' but I keep getting told it's not a repeater when I try.)

This is with:
Devmon v0.3.0-rc1, a device monitor for BigBrother/Hobbit

So what am I doing wrong?

TIA

Tom Kauffman
NIBCO, Inc
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