Locating Mib Files - Intel 470F - NetStructure Switch User Manual

A P P E N D
470T Appendix A.p65
I X Technical Information
I keep getting an intermittent loss of link (or data is not
being transmitted). Why?
• You may be using the wrong grade of cable. The wrong cable can cause
erratic performance and you may eventually lose the connection
between the port and the attached device. See "Connection Guidelines"
in Chapter 1 for more information on cabling.
• Check the duplex setting for the device connected to the port. You may
need to use the Local Management or Web Device Manager to force the
port to half- or full-duplex (470T only).
• A cable segment somewhere in your collision domain may be too long.
Make sure none of your UTP cabling is longer than 100 meters (or not
longer than 550 meters for mulitmode fiber cable).
I created a tag-based VLAN, and I have tag-capable LAN
adapters in my PCs, but I can still communicate with
devices outside the VLAN. Why?
There are two areas to check in this situation. This can occur if ingress
filtering is disabled. Enable ingress filtering so that the switch drops
incoming packets if the packet's VID is not a member of the port.
Secondly, ensure that the PC's NIC is enabled for tagging. If the NIC is
not enabled for tagging, the PC sends and receives untagged traffic, and
the switch classifies the traffic using the PVID.

Locating MIB files

If you use a MIB browser, you can configure or view statistics for the
switch. You can find these switch MIB files at the Intel Customer Support
Web site at http://support.intel.com/support.
• intel.mib
• intel_gen.mib
• int_s470.mib
• int_pbrd.mib
• int_qprd.mib
When compiling the MIBs into an SNMP-compliant management
application, compile the intel.mib first then compile the intel_gen.mib,
int_s470.mib, int_pbrd.mib, and int_qprb.mib files.
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