Fixes template of MRTG Backend Config #746
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barryo
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Nov 13, 2021
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Hi @seadog007 - thanks for this. If I understand what you're trying to do, I think my version above will work and will sort it at source. Basically: if we have no ifIndex then we've never found the port via SNMP and so we should exclude it. |
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[BF] Summary of fix - fixes template of MRTG Backend Config
The original template will cause the backend can't proper generate the graph for switch aggregated / infra / overall after manually adding interface (for example dummy interface).
The MRTG config of the original template will be like
It contains some invalid reference which can't retrieve from the SNMP, eventually cause the graph fail to render.
The quick fix is to check whether or not the interface can be retrieved from the SNMP, to achieve that, the simply way is to check the existence of the return value of ifnameToSNMPIdentifier().
The final MRTG config will be like
In addition to the above, I have:
<?= $t->ee( $data ) ?>or equivalent.