关于Dell iDRAC 7通过SNMP获取服务器非iDRAC网卡信息的咨询

Hey there, I’ve run into this exact issue with iDRAC7 before—by default, the iDRAC’s built-in SNMP agent only reports its own network interface when you query the standard IF-MIB. To get info on the server’s other 4 NICs, you’ll need to adjust a few settings and use Dell’s proprietary MIBs instead of the generic IF-MIB. Here’s how to fix it:

Step 1: Verify iDRAC SNMP Configuration #

First, log into your iDRAC7 web interface and double-check these settings:

• Go to iDRAC Settings > Network > SNMP
  • Ensure SNMP v2c is enabled
  • Confirm your community string (public in your command) is listed under "SNMP Community Strings" with Read Only (or higher) permissions
  • Make sure the core SNMP service is active for queries (not just trap destinations)

Step 2: Enable Hardware Inventory Reporting via SNMP #

iDRAC7 doesn’t expose server hardware like other NICs via SNMP by default. You need to turn this on:

• Navigate to Server Settings > Inventory (or in some firmware versions, iDRAC Settings > System Management > Inventory Collection)
• Check "Enable Inventory Collection" and set a reasonable collection frequency (like hourly)
• Save the settings and either wait for the next inventory run or trigger a manual refresh if available

Step 3: Use Dell’s Proprietary MIBs to Query NIC Info #

The standard IF-MIB won’t show server NICs through iDRAC—you need to use Dell’s specific OIDs from the Dell Server MIB (Dell OpenManage Server Administrator MIB). Here are key OIDs to target:

• Physical NIC status: 1.3.6.1.4.1.674.10892.5.4.100.10.1.5 (dellNetDeviceStatus)
• NIC MAC addresses: 1.3.6.1.4.1.674.10892.5.4.100.10.1.6 (dellNetDeviceMacAddress)
• NIC link status: 1.3.6.1.4.1.674.10892.5.4.100.10.1.11 (dellNetDeviceLinkStatus)

Run a walk on the parent OID to get all NIC details at once:

snmpwalk -v2c -cpublic 10.1.1.2 1.3.6.1.4.1.674.10892.5.4.100.10

Alternative: Query the OS-Level SNMP Agent #

If you don’t want to use proprietary MIBs, enable the SNMP agent directly on the server’s OS (Windows SNMP Service or Linux snmpd), then run your original IF-MIB::ifEntry query against the server’s OS IP instead of the iDRAC IP. This will show all NICs managed by the OS, including the 4 you’re looking for.

Quick Troubleshooting Tips #

• Update your iDRAC7 firmware to the latest version—older builds had limited SNMP support for server hardware components
• Confirm your network allows UDP port 161 (SNMP queries) between your machine and the iDRAC
• If using a management tool, load the Dell Server MIB to make OIDs easier to read and navigate

备注：内容来源于stack exchange，提问作者jfreak53