ARP Table via SNMP
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Hi there,
I read some posts about getting the arp table of the pfsense via SNMP. I am not able to get it?!
I have enable all snmp modules; SNMP ist working:root@daffy:~# snmpwalk 172.27.0.1 -c public -v2c |head
SNMPv2-MIB::sysDescr.0 = STRING: "ipdrouter.ipdynamics.local 1345880010 FreeBSD 8.1-RELEASE-p6"
SNMPv2-MIB::sysObjectID.0 = OID: BEGEMOT-MIB::begemot.1.2.1.1
EXPRESSION-MIB::sysUpTimeInstance = Timeticks: (1303876) 3:37:18.76
….But no arp table:
root@daffy:~# snmpwalk 172.27.0.1 -c public -v2c ipNetToMediaPhysAddress
RFC1213-MIB::ipNetToMediaPhysAddress = No Such Instance currently exists at this OID
root@daffy:~# snmpwalk 172.27.0.1 -c public -v2c ipNetToPhysicalPhysAddress
IP-MIB::ipNetToPhysicalPhysAddress = No Such Object available on this agent at this OID
root@daffy:~# snmpwalk 172.27.0.1 -c public -v2c ipNetToPhysicalTable
IP-MIB::ipNetToPhysicalTable = No Such Object available on this agent at this OID
root@daffy:~#Any suggestions?
Thanks
Torsten -
Same here, apparently it was working around 1.2:
http://forum.pfsense.org/index.php?topic=12795.0
Would be great if it came back :)
If I may suggest an improvement with regards to IPv6, ipNetToPhysicalPhysAddress (1.3.6.1.2.1.4.35.1.4) table might be a nice new home for it.
What can be observed on other networking devices (e.g. switches), that the old ipNetToMediaPhysAddress (1.3.6.1.2.1.4.22.1.2) is kept and ipv6NetToMediaPhysAddress (1.3.6.1.2.1.55.1.12.1.2) is added for ND entries…
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I had given up on getting ARP tables from pfSense too, I didn't know it was not working and thought it was me. Would definitely like to see it working.
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Since the SNMP data was requested by an external webserver, it is also possible to get some webpage info through this php webserver.
Created to following script on pfSense /usr/local/www/arp.php
$dhcpFile = shell_exec('arp -na'); echo $dhcpFile . "\n" ; ?>E.g. https://pfsenseAddress/arp.php o wget https://pfsenseAddress/arp.php -O arp_table
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Just tested 2.2.3-RELEASE and it's back again, yieih!!!