Microsemi AN1196 DHCP Pool Per Interface Addresses User guide
- Type
- User guide
Microsemi AN1196 DHCP Pool Per Interface Addresses allows you to configure a DHCP pool such that there is a 1:1 mapping between an Ethernet port interface and the IP address offered on exactly that port interface. A primary use-case is when a switch device has only one directly attached client per port, for some subset of ports. In that case it can be convenient to lock the IP address of the device attached to each port, as this simplifies client device replacement in a production environment.
Microsemi AN1196 DHCP Pool Per Interface Addresses allows you to configure a DHCP pool such that there is a 1:1 mapping between an Ethernet port interface and the IP address offered on exactly that port interface. A primary use-case is when a switch device has only one directly attached client per port, for some subset of ports. In that case it can be convenient to lock the IP address of the device attached to each port, as this simplifies client device replacement in a production environment.
AN1196 Software
Conguration Guide - DHCP
Pool Per-Interface Addresses
AN1196
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About Microsemi
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# show running-config
! Globally enable the DHCP server function
ip dhcp server
! Create the VLAN and VLAN interface that will be serving DHCP
vlan 42
interface vlan 42
ip address 10.42.0.1 255.255.0.0
ip dhcp server
! (Port VLAN membership setup omitted)
! Create the pool
ip dhcp pool my_pool
network 10.42.0.0 255.255.0.0
broadcast 10.42.255.255
lease 1 0 0
! Specify per-interface addresses for Fa 1/1 and Fa 1/2:
address 10.42.1.100 interface FastEthernet 1/1
address 10.42.55.3 interface FastEthernet 1/2
! Only hand out per-interface addresses:
! reserved-only
! Or hand out both per-interface addresses and normal dynamic addresses
! no reserved-only
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DHCP
Server
Switch
10.42.1.100
10.42.55.3
10.42.0.2 Layer 2
Switch
10.42.0.3
10.42.0.4
10.42.0.5
10.42.0.6
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Fa 1/2
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Switch# configure terminal
Switch(config)# ip dhcp pool my_pool
Switch(config-dhcp-pool)# reserved-only
Switch(config-dhcp-pool)# end
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Server
Switch
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10.42.55.3
Layer 2
Switch
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Fa 1/2
Fa 1/3
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Fa 1/4
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Server
Switch
10.42.55.3
Layer 2
Switch 10.42.1.100
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Fa 1/3
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Fa 1/4
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Server
Switch
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10.42.0.2 Layer 2
Switch
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10.42.1.100
10.42.0.4
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Fa 1/3
Fa 1/1
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Fa 1/5
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Command Description
address <ipv4_address> interface
<interface_name>
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Command Description
show ip dhcp pool [<pool_name>] 6@=9.F=2?=<<96;3<?:.A6<;99=<<9@
.?296@A2163A52 pool_name 6@<:6AA21
show ip dhcp server binding […] 6@=9.F/6;16;46;3<?:.A6<;)2C2?.9
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Switch# show ip dhcp pool
Pool Name: my_pool
----------------------------------------------
Type is network
IP is 10.42.0.0
Subnet mask is 255.255.0.0
Subnet broadcast address is 10.42.255.255
Lease time is 1 days 0 hours 0 minutes
Default router is -
Domain name is -
DNS server is -
NTP server is -
Netbios name server is -
Netbios node type is -
Netbios scope identifier is -
NIS domain name is -
NIS server is -
Vendor class information is -
Client identifer is -
Hardware address is -
Client name is -
Is restricted to reserved addresses:
10.42.1.100 on interface FastEthernet 1/1
10.42.55.3 on interface FastEthernet 1/2
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Switch# show ip dhcp server binding
IP: 10.42.1.100
----------------------------------------------
State is committed
Binding type is automatic
Pool name is my_pool
Server ID is 10.42.0.1
VLAN ID is 42
Subnet mask is 255.255.0.0
Client identifier is type of MAC address that is ..:..:..:..:..:..
Hardware address is ..:..:..:..:..:..
Lease time is 1 days 0 hours 0 minutes 0 seconds
Expiration is 12 hours 39 minutes 8 seconds
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Microsemi AN1196 DHCP Pool Per Interface Addresses User guide
- Type
- User guide
Microsemi AN1196 DHCP Pool Per Interface Addresses allows you to configure a DHCP pool such that there is a 1:1 mapping between an Ethernet port interface and the IP address offered on exactly that port interface. A primary use-case is when a switch device has only one directly attached client per port, for some subset of ports. In that case it can be convenient to lock the IP address of the device attached to each port, as this simplifies client device replacement in a production environment.
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