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Cannot disable Ip Forwarding on a Routed Interface.

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TitleCannot disable Ip Forwarding on a Routed Interface.
Symptoms
Cannot disable Ip Forwarding on a Routed Interface.
Execute "no ip forwarding"
Error: Forwarding cannot be disabled on this interface
Environment
  • S-Series
  • All Firmware Versions
  • All Hardware Versions
  • DHCP Helper
  • IP NAT
Cause
IP NAT and DHCP require routing enabled
  • interface vlan.0.50
    • ip address 192.168.50.254 255.255.255.0 primary
    • ip helper-address 192.168.0.41
    • ip nat inside
    • no shutdown
    • exit
Resolution
Delete IP NAT and DHCP Helper from the routed interface.
  • interface vlan.0.50
    • no ip helper-address 192.168.0.41
    • no ip nat inside
    • no ip forwarding
    • exit
Additional notes

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