Re: Two net-snmp machines - only one retrieves data from IBM AS/400

On 08/12/06, David Ingoldsby <DIngoldsby@idb.ie> wrote:
> There are two machines acting as SNMP managers:
>
> 1: RedHat Enterprise Linux: net-snmp 5.1.2 installed.
> I run snmpget to 10.0.1.48:
> [root@RHEL4~]# snmpget -v 1 10.0.1.48 -c public system.sysDescr.0
> SNMPv2-MIB::sysDescr.0 = STRING: IBM OS/400 V5R3M0

>
> 2: CentOS 4.4: net-snmp 5.1.2 installed.
> I run snmpget to 10.0.1.48:
> snmpget -v 1 10.0.1.48 -c public system.sysDescr.0
> Timeout: No Response from 10.0.1.48.


> On rhe RHEL machine, to 10.0.1.48, there's an SNMP get-request, followed
> immediately by a get-response.
>
> On the CentOS machine, there's an SNMP get-request, followed immediately
> by a get-response, followed immediately by an ICMP to the port the
> get-response came from.

That definitely sounds like low-level network access control.
(i.e. way below the level that Net-SNMP works at)



> Wireshark on both machines sees the responses relevant to that machine,
> and neither machine is running a firewall.

Are you sure that the CentOS machine doesn't have 'iptables' installed?
What do:

service iptable status
chkconfig --list iptables

return on this box?

Dave

-------------------------------------------------------------------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share your
opinions on IT & business topics through brief surveys - and earn cash
http://www.techsay.com/default.php?p...rge&CID=DEVDEV
_______________________________________________
Net-snmp-users mailing list
Net-snmp-users@lists.sourceforge.net
Please see the following page to unsubscribe or change other options:
https://lists.sourceforge.net/lists/...net-snmp-users