D-Link DGS-1250 Emulator - Page 121

relay source

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DGS-1250 Series Gigabit Ethernet Smart Managed Switch CLI Reference Guide Parameters IP-ADDRESS Specifies the relay destination DHCP server IP address. Default None. Command Mode DHCP Pool Configuration Mode. Usage Guideline The relay destination of the DHCP server can be specified in the DHCP relay pool. To do this, use the ip dhcp pool command to enter the DHCP Pool Configuration Mode and then use the relay source command to specify the source subnet of the client requests. Use the relay destination command to specify the relay destination server address. Multiple relay sources and multiple relay destinations can be specified in a pool. If a packet matches any of the relay sources, the packet will be forwarded to all of the relay destinations. When receiving a DHCP request packet, if the subnet of the received packet matches the relay source of a relay pool, the packet will be relayed based on this relay pool. To relay a packet based on the relay pool, if the request packet is a relayed packet, the GIADDR of the packet is the source of the request. If the request packet is not a relayed packet, the subnet of the received interface is the source of the packet. In a DHCP relay pool, administrators can further use the class command and the relay target command to associate a list of relay target addresses with a DHCP class. Example This example shows how to create a DHCP relay pool, called pool1. In the relay pool, the subnet 172.19.10.0/255.255.255.0 is specified as the source subnet. 10.2.1.1 is specified as the relay destination address. Switch# configure terminal Switch(config)# ip dhcp pool pool1 Switch(config-dhcp-pool)# relay source 172.19.10.0 255.255.255.0 Switch(config-dhcp-pool)# relay destination 10.2.1.1 Switch(config-dhcp-pool)# 15-20 relay source This command is used to specify the source subnet of client packets. Use the no form of this command to remove the source subnet relay source IP-ADDRESS SUBNET-MASK no relay source IP-ADDRESS SUBNET-MASK Parameters IP-ADDRESS SUBNET-MASK Specifies the source subnet of client packets. Specifies the network mask of the source subnet. Default None. 118

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DGS-1250 Series Gigabit Ethernet Smart Managed Switch CLI Reference Guide
118
Parameters
IP-ADDRESS
Specifies the relay destination DHCP server IP address.
Default
None.
Command Mode
DHCP Pool Configuration Mode.
Usage Guideline
The relay destination of the DHCP server can be specified in the DHCP relay pool. To do this, use the
ip dhcp
pool
command to enter the DHCP Pool Configuration Mode and then use the
relay source
command to specify
the source subnet of the client requests. Use the
relay destination
command to specify the relay destination
server address. Multiple relay sources and multiple relay destinations can be specified in a pool. If a packet
matches any of the relay sources, the packet will be forwarded to all of the relay destinations.
When receiving a DHCP request packet, if the subnet of the received packet matches the relay source of a relay
pool, the packet will be relayed based on this relay pool. To relay a packet based on the relay pool, if the request
packet is a relayed packet, the GIADDR of the packet is the source of the request. If the request packet is not a
relayed packet, the subnet of the received interface is the source of the packet.
In a DHCP relay pool, administrators can further use the
class
command and the
relay target
command to
associate a list of relay target addresses with a DHCP class.
Example
This example shows how to create a DHCP relay pool, called pool1. In the relay pool, the subnet
172.19.10.0/255.255.255.0 is specified as the source subnet. 10.2.1.1 is specified as the relay destination address.
Switch# configure terminal
Switch(config)# ip dhcp pool pool1
Switch(config-dhcp-pool)# relay source 172.19.10.0 255.255.255.0
Switch(config-dhcp-pool)# relay destination 10.2.1.1
Switch(config-dhcp-pool)#
15-20 relay source
This command is used to specify the source subnet of client packets. Use the
no
form of this command to remove
the source subnet
relay source
IP-ADDRESS
SUBNET-MASK
no relay source
IP-ADDRESS
SUBNET-MASK
Parameters
IP-ADDRESS
Specifies the source subnet of client packets.
SUBNET-MASK
Specifies the network mask of the source subnet.
Default
None.