SNMPv3 EngineID Changed to Random Format?
Gary Dunlap <[email protected]>
| Newsgroups | gmane.network.net-snmp.user |
|---|---|
| Message-ID | <[email protected]> |
Hi. I have Net-SNMP v5.6.1 configured to generate engine IDs in the MAC format, using the snmpd.conf statement "engineIDType 3". However, I've noticed some systems configured this way actually running with engineIDs in Net-SNMP's "random" format. When I tried to debug this by restarting snmpd with more debug tokens, it returned to using the MAC format. I noticed that the MAC address is obtained using socket() and ioctl() calls. Is it possible that these could fail, depending on what's happening on the processor, and the engineID default to random? I didn't notice such logic in the code. Are there other error scenarios that would lead to random format engineIDs? Below are Wireshark trace snippets showing the same controller with a random engineID then the intended, MAC-based one. Thanks in advance. Gary Dunlap Frame 123 (185 bytes on wire, 185 bytes captured) ... Internet Protocol, Src: 10.134.100.10 (10.134.100.10), Dst: 10.134.1.9 (10.134.1.9) msgAuthoritativeEngineID: 80001F8880EB009929578E2E4E 1... .... = Engine ID Conformance: RFC3411 (SNMPv3) Engine Enterprise ID: net-snmp (8072) Engine ID Format: Reserved/Enterprise-specific (128): Net-SNMP Random Engine ID Data: EB009929 Engine ID Data: Creation Time: Jul 26, 2011 03:52:23 Now: Internet Protocol, Src: 10.134.100.10 (10.134.100.10), Dst: 10.134.1.9 (10.134.1.9) msgAuthoritativeEngineID: 80001F880300C0FFDB0659 1... .... = Engine ID Conformance: RFC3411 (SNMPv3) Engine Enterprise ID: net-snmp (8072) Engine ID Format: MAC address (3) Engine ID Data: MAC address: DotHill_db:06:59 (00:c0:ff:db:06:59) ------------------------------------------------------------------------------ BlackBerry® DevCon Americas, Oct. 18-20, San Francisco, CA The must-attend event for mobile developers. Connect with experts. Get tools for creating Super Apps. See the latest technologies. Sessions, hands-on labs, demos & much more. Register early & save! http://p.sf.net/sfu/rim-blackberry-1 _______________________________________________ Net-snmp-users mailing list [email protected] Please see the following page to unsubscribe or change other options: https://lists.sourceforge.net/lists/listinfo/net-snmp-users