D-Link DGS-3630-52TC Manual - Page 791
ip forward-protocol
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DGS-3630 Layer 3 Stackable Managed Switch CLI Reference Guide • The destination MAC address must be a broadcast address. • The destination IP address must be an all-one broadcast. • The packets are IPv4 UDP packets. • The IP TTL value must be greater than or equal to 2. Example This example shows how to configure the IP helper-address to 172.50.71.123 for VLAN 100. Switch# configure terminal Switch(config)#interface vlan 100 Switch(config-if)#ip helper-address Switch(config-if)# 172.50.71.123 58-5 ip forward-protocol This command is used to enable the forwarding of a specific UDP service type of packets. Use the no form of this command to disable forwarding of a specific UDP service type of packets. ip forward-protocol udp [PORT] no ip forward-protocol udp [PORT] Parameters PORT (Optional) Specifies the destination port of the UDP service to be forwarded or not forwarded. Default Common used application protocols are enabled. Command Mode Global Configuration Mode. Command Default Level Level: 12. Usage Guideline The following is a listing of the commonly used application protocols that will be forwarded by default if the IP helper address is configured. If the command or the no form of the command is configured without specifying the port number, then the default ports are applied. BOOTP UDP port 67 and 68 cannot be specified as the packets are forwarded by DHCP relay. Default ports are: • Trivial File Transfer Protocol (TFTP) port 69. • Domain Naming System (DNS) port 53. • Time service port 37. • NetBIOS Name Server port 137. • NetBIOS Datagram Server port 138. • TACACS service port 49. • IEN-116 Name Service port 42. Example This example shows how the IP helper address is configured to 172.50.71.123 for VLAN 100. IP helper forwarding of UDP port 53 (DNS) is disabled. 786
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1,669
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1,670
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1,672
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1,673
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