Troubleshooting DHCP Client Leases in AOS

Version 2

    Q: Why is my AOS device unable to obtain an IP address via DHCP from a cable or DSL provider?

     

    A:

    Spanning Tree Protocol (STP) and Link Layer Discovery Protocol (LLDP) packets can cause problems for broadband modems, which lead to DHCP failure.  On Ethernet interfaces that connect to modems, be sure to add the following commands:

     

    Depending on the model of the NetVanta you are using the interfaces will be "interface ethernet 0/x" or "interface switchport 0/x" where x is the port number.

     

    interface ethernet 0/X
      spanning-tree edgeport
      spanning-tree bpdufilter enable
      no lldp send-and-receive

     

     

    interface switchport 0/X
      spanning-tree edgeport
      spanning-tree bpdufilter enable
      no lldp send-and-receive