On 26.03.2010 11:01, Hartmut Brandt wrote:
VS>I, probably, was to verbose, and didn't make myself clear enough. For now,
VS>from network admin point of view, it's 3 problems:
VS>1) No ARP support
The ARP table should be there. It may be that it got 'lost' with the ARP
changes last year. So this should be fixable. The ARP table is the old
one, though.
I was looking for something like ipNetToPhysicalTable (ipv6 compatible)
or ipNetToMedia (depreciated, ip4 only) - both are not there. A bug, I
suppose.
net-snmp under freebsd got ipNetToMedia.
If there is anything I can do to help with testing new bsnmpd or patches
- I am ready. :)
VS>2) Routing table not exported correctly (directly attached routes not
VS>visible, maybe something else - at least it's nothing like netstat -rn gives)
This may be the same problem. The routing table code just fetches the
routing table from the kernel. If the directly attached routes are not in
the routing table anymore, they will not show up.
Routes are in the routing table. netstat -rn show everything correctly,
and, againg, net-snmp ipCidrRoute contains all routes, but consider all
them "local". bsnmp, in the other hand, got only some of the routes.
This is obviously a bug and should be fixed.
3) No LLDP support
Until two days ago I was not even aware what LLDP is :-)
You never what that is link-layer discovery protocol until it comes to
large network and you need to automate link discovery and build a
topology. LLDP daemon by itself is good, but there must be a way to
query it by snmp - otherwise it is useless. So far the best lldp daemon
for bsd systems is ladvd, link advertising daemon, but bsnmp got no
means of reading info from it, so I'm kinda stuck here.
http://www.blinkenlights.nl/software/ladvd/
ladvd uses cdp / lldp frames to inform switches about connected hosts,
which simplifies ethernet switch management. It does this by creating
a raw socket at startup, and then switching to a non-privileged user for the
remaining runtime. Every 30 seconds it will transmit CDP/LLDP packets
reflecting the current system state. Interfaces (bridge, bonding, wireless),
capabilities (bridging, forwarding, wireless) and addresses (IPv4, IPv6)
are detected dynamically.
harti
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