Hi Jochen, some more details..
The protagonists: - phd-webxen 2.6.18-6-xen-amd64, etch Xen-DomU sending the snmpwalks - phd-node1 2.6.18-6-xen-amd64, etch Xen-Dom0 with a working snmpd - phd-xenhost 2.6.26-1-xen-amd64, lenny Xen-Dom0 with unresponsive snmpd the scenario: snmpwalk from phd-webxen to phd-node1 and phd-xenhost on phd-node1: tcpdump -i eth0 host phd-webxen|less ----------------------------- listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes 12:35:57.272393 IP phd-webxen.ethz.ch.38851 > phd-node1.ethz.ch.snmp: GetNextRequest(25) 12:35:57.273105 IP phd-node1.ethz.ch.snmp > phd-webxen.ethz.ch.38851: GetResponse(105) system.sysDescr.0=[|snmp] 12:35:57.273927 IP phd-webxen.ethz.ch.38851 > phd-node1.ethz.ch.snmp: GetNextRequest(28) system.sysDescr.0 12:35:57.274403 IP phd-node1.ethz.ch.snmp > phd-webxen.ethz.ch.38851: GetResponse(38) system.sysObjectID.0=E:8072.3.2.10 12:35:57.274920 IP phd-webxen.ethz.ch.38851 > phd-node1.ethz.ch.snmp: GetNextRequest(28) system.sysObjectID.0 12:35:57.275140 IP phd-node1.ethz.ch.snmp > phd-webxen.ethz.ch.38851: GetResponse(32) system.sysUpTime.0=121516337 12:35:57.275568 IP phd-webxen.ethz.ch.38851 > phd-node1.ethz.ch.snmp: GetNextRequest(28) system.sysUpTime.0 12:35:57.275712 IP phd-node1.ethz.ch.snmp > phd-webxen.ethz.ch.38851: GetResponse(88) system.sysContact.0=[|snmp] 12:35:57.276015 IP phd-webxen.ethz.ch.38851 > phd-node1.ethz.ch.snmp: GetNextRequest(28) system.sysContact.0 12:35:57.276132 IP phd-node1.ethz.ch.snmp > phd-webxen.ethz.ch.38851: GetResponse(37) system.sysName.0="phd-node1" 12:35:57.276506 IP phd-webxen.ethz.ch.38851 > phd-node1.ethz.ch.snmp: GetNextRequest(28) system.sysName.0 12:35:57.276704 IP phd-node1.ethz.ch.snmp > phd-webxen.ethz.ch.38851: GetResponse(74) system.sysLocation.0=[|snmp] 12:35:57.277013 IP phd-webxen.ethz.ch.38851 > phd-node1.ethz.ch.snmp: GetNextRequest(28) system.sysLocation.0 12:35:57.277184 IP phd-node1.ethz.ch.snmp > phd-webxen.ethz.ch.38851: GetResponse(29) system.8.0=0 12:35:57.277507 IP phd-webxen.ethz.ch.38851 > phd-node1.ethz.ch.snmp: GetNextRequest(28) system.8.0 12:35:57.277645 IP phd-node1.ethz.ch.snmp > phd-webxen.ethz.ch.38851: GetResponse(36) system.9.1.2.1=31 12:35:57.278165 IP phd-webxen.ethz.ch.38851 > phd-node1.ethz.ch.snmp: GetNextRequest(30) system.9.1.2.1 12:35:57.278569 IP phd-node1.ethz.ch.snmp > phd-webxen.ethz.ch.38851: GetResponse(36) system.9.1.2.2=S:1 12:35:57.279163 IP phd-webxen.ethz.ch.38851 > phd-node1.ethz.ch.snmp: GetNextRequest(30) system.9.1.2.2 [...] ----------------------------- on phd-xenhost: tcpdump -i eth0 host phd-webxen|less ----------------------------- listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes 12:37:23.124578 IP phd-webxen.ethz.ch.38851 > phd-xenhost.ethz.ch.snmp: GetNextRequest(25) 12:37:24.125875 IP phd-webxen.ethz.ch.38851 > phd-xenhost.ethz.ch.snmp: GetNextRequest(25) 12:37:25.129819 IP phd-webxen.ethz.ch.38851 > phd-xenhost.ethz.ch.snmp: GetNextRequest(25) 12:37:26.133720 IP phd-webxen.ethz.ch.38851 > phd-xenhost.ethz.ch.snmp: GetNextRequest(25) 12:37:27.139761 IP phd-webxen.ethz.ch.38851 > phd-xenhost.ethz.ch.snmp: GetNextRequest(25) 12:37:28.141762 IP phd-webxen.ethz.ch.38851 > phd-xenhost.ethz.ch.snmp: GetNextRequest(25) ----------------------------- I don't believe in a network problem because each and every other service on phd-xenhost is working just fine, and after a reboot also snmp works for some time. thanks, -Christian -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]