[j-nsp] SNMP NMS support of Junos VLAN MIBs

[Colton Conor]

Chuck,

Did this Junos issue ever get resolved?

On Wed, Dec 9, 2015 at 10:31 AM, Chuck Anderson <cra at wpi.edu> wrote:

> Has anyone tried to use or implement polling of the Q-BRIDGE-MIB on
> any Juniper products, using either commercial or open source NMS
> software or custom in-house software?  What has been your experience
> of the Juniper support of those SNMP products to correctly report
> Port/VLAN memberships and VLAN/MAC FDB information?
>
> Juniper EX-series (at least EX2200,3200,4200) 12.x and earlier has a
> working Q-BRIDGE-MIB (dot1qVlanStaticEgressPorts) and JUNIPER-VLAN-MIB
> (jnxExVlan).  Because Q-BRIDGE-MIB refers only to internal VLAN
> indexes, you need to use both MIBs to get Port/VLAN mappings including
> the 802.1Q VLAN tag ID (jnxExVlanTag).  This means custom software, or
> an NMS vendor willing to implement the Juniper Enterprise MIBs.
>
> All other Juniper Junos platforms only have Q-BRIDGE-MIB, but it is
> broken (doesn't follow RFC 4363 standard PortList definition, instead
> storing port indexes as ASCII-encoded, comma separated values),
> apparently for a very long time.  So again, you need custom software
> or an NMS vendor willing to implement the broken Juniper version of
> Q-BRIDGE-MIB (along with detecting which implementation is needed on
> any particular device).  This hasn't been a problem for us and in fact
> went unnoticed, because we never cared to poll VLAN information from
> our MX routers, only EX switches.
>
> But now EX-series (and QFX-series) 13.x and newer with ELS have
> dropped the Enterprise JUNIPER-VLAN-MIB (a good thing to not require
> Enterprise MIBs to get the VLAN tag ID) and have adopted the broken
> Q-BRIDGE-MIB that all the other Junos platforms have been using (a
> very bad thing).  I'm pushing to have Juniper fix this, but their
> concern is that it may break SNMP software that has been assuming the
> broken Q-BRIDGE-MIB implementation for all these years.
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