DHCP Server Defaults
Configuration > Networking > DHCP Server Defaults
You can reduce your workload by using this tab to configure global defaults for Dynamic Host Configuration Protocol (DHCP).
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These defaults apply to the LAN interfaces in Deployment Profiles that specify Router mode.
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There are three choices:
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No DHCP.
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Each LAN interface acts as a DHCP Server.
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The EdgeConnect appliance acts as a DHCP/BOOTP Relay between a DHCP server at a data center and clients needing an IP address.
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On the Configuration > Overlays & Security > Deployment Profiles tab, the selected default displays consistently under each LAN–side IP/Mask field.
For any LAN–side interface, you can override the global default by clicking the DHCP-related link under the IP/Mask field and changing the values or selection.
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Changes you save to the global default only apply to new configurations.
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To view or revise the list of reserved subnets, select Monitoring.
DHCP Settings
DHCP Server
| Field | Description |
|---|---|
| DHCP Pool Subnet/Mask | Enter the DHCP pool subnet and mask IP addresses. |
| Subnet Mask | Mask that specifies the default number of IP addresses reserved for any subnet. For example, entering 24 reserves 256 IP addresses. |
| Exclude first N addresses | Specifies how many IP addresses are not available at the beginning of the subnet’s range. |
| Exclude last N addresses | Specifies how many IP addresses are not available at the end of the subnet’s range. |
| Default lease, Maximum lease |
Specify, in hours, how long an interface can keep a DHCP–assigned IP address. |
| Default gateway | Indicates whether the default gateway is being used. |
| DNS server(s) | Specifies the associated Domain Name System servers. |
| NTP server(s) | Specifies the associated Network Time Protocol servers. |
| NetBIOS name server(s) | Used for Windows (SMB) type sharing and messaging. It resolves the names when you are mapping a drive or connecting to a printer. |
| NetBIOS node type | NetBIOS node type of a networked computer relates to how it resolves NetBIOS names to IP addresses. There are four node types: B-node – 0x01 Broadcast P-node – 0x02 Peer (WINS only) M-node – 0x04 Mixed (broadcast, then WINS) H-node – 0x08 Hybrid (WINS, then broadcast) |
| DHCP failover | Enables DHCP failover. To set it up, click the Failover Settings link. |
DHCP/BOOTP Relay
| Field | Description |
|---|---|
| Destination DHCP/BOOTP Server | IP address of the DHCP server assigning the IP addresses. |
| Enable Option 82 | When selected, inserts additional information into the packet header to identify the client’s point of attachment. This setting applies to all LAN-side interfaces on this appliance. IMPORTANT: Changing this setting will modify Option 82 settings on all LAN-side interfaces that are enabled as DHCP Relay. |
| Option 82 Policy | Tells the relay what to do with the hex string it receives. The choices are append, replace, forward, and discard. This setting applies to all LAN-sideinterfaces on this appliance. IMPORTANT: Changing this setting will modify Option 82 settings on all LAN-side interfaces that are enabled as DHCP Relay. |