the destination address unchanged because the forwarding process is Layer 2. If you enabled UDP helper, the
packet is flooded on VLAN 100 as well.
Figure 57. UDP Helper with Configured Broadcast Addresses
UDP Helper with No Configured
Broadcast Addresses
The following describes UDP helper with no broadcast addresses configured.
• If the incoming packet has a broadcast destination IP address, the unaltered packet is routed to all Layer
3 interfaces.
• If the Incoming packet has a destination IP address that matches the subnet broadcast address of any
interface, the unaltered packet is routed to the matching interfaces.
Troubleshooting UDP Helper
To display debugging information for troubleshooting, use the
debug ip udp-helper
command.
Example of the
debug ip udp-helper
Command
Dell(conf)# debug ip udp-helper
01:20:22: Pkt rcvd on Te 5/1 with IP DA (0xffffffff) will be sent on Te 5/2 Te 5/3
Vlan 3
01:44:54: Pkt rcvd on Te 7/1 is handed over for DHCP processing.
When using the IP helper and UDP helper on the same interface, use the
debug ip dhcp
command.
Example Output from the
debug ip dhcp
Command
Packet 0.0.0.0:68 -> 255.255.255.255:67 TTL 128
IPv4 Routing
516
Содержание S4048T
Страница 1: ...Dell Configuration Guide for the S4048T ON System 9 10 0 1 ...
Страница 98: ... saveenv 7 Reload the system uBoot mode reset Management 98 ...
Страница 113: ...Total CFM Pkts 10303 CCM Pkts 0 LBM Pkts 0 LTM Pkts 3 LBR Pkts 0 LTR Pkts 0 802 1ag 113 ...
Страница 411: ...mode transit no disable Force10 Resilient Ring Protocol FRRP 411 ...
Страница 590: ...Figure 67 Inspecting the LAG Configuration Link Aggregation Control Protocol LACP 590 ...
Страница 591: ...Figure 68 Inspecting Configuration of LAG 10 on ALPHA Link Aggregation Control Protocol LACP 591 ...
Страница 594: ...Figure 70 Inspecting a LAG Port on BRAVO Using the show interface Command Link Aggregation Control Protocol LACP 594 ...
Страница 595: ...Figure 71 Inspecting LAG 10 Using the show interfaces port channel Command Link Aggregation Control Protocol LACP 595 ...
Страница 646: ...Figure 87 Configuring Interfaces for MSDP Multicast Source Discovery Protocol MSDP 646 ...
Страница 647: ...Figure 88 Configuring OSPF and BGP for MSDP Multicast Source Discovery Protocol MSDP 647 ...
Страница 648: ...Figure 89 Configuring PIM in Multiple Routing Domains Multicast Source Discovery Protocol MSDP 648 ...
Страница 653: ...Figure 91 MSDP Default Peer Scenario 2 Multicast Source Discovery Protocol MSDP 653 ...
Страница 654: ...Figure 92 MSDP Default Peer Scenario 3 Multicast Source Discovery Protocol MSDP 654 ...
Страница 955: ...Figure 119 Single and Double Tag First byte TPID Match Service Provider Bridging 955 ...
Страница 1179: ...Figure 147 Create Hypervisor Figure 148 Edit Hypervisor Figure 149 Create Transport Connector Virtual Extensible LAN VXLAN 1179 ...