14.4 Netwrok Layer Troubleshooting Flashcards
1
Q
Common layer 3 troubleshooting issues:
A
Mismatched MTU (max transmission unit), incorrect subnet mask, incorrect default gateway, dupe IP address, incorrect dns configuration, dupe Mac addresses, expired IP addresses, exhausted DHCP scope, rogue dhcp server, untrusted SSL certs, incorrect time, blocked TCP/UDP ports, incorrect host-based firewall settings, incorrect ACL settings, unresponsive service
