In the previous section, we discussed the use of three CLI commands that can be used for troubleshooting Physical Layer issues. This section describes some common approaches to identifying and troubleshooting intra-VLAN connectivity issues. Some of the more common causes of intra-VLAN connectivity issues include the following:
- Duplex mismatches
- Bad NIC or cable
- Hardware issues
- Software issues
- Resource oversubscription
- Configuration issues
Duplex mismatches can result in very slow network performance and connectivity. While some improvements in auto-negotiation have been made . . .
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