ASR 1000 - DHCP server on interface with only static IP

[dominiaz]

How to make DHCP server on ASR 1000 with only static IP - IP binded with mac?

[MHM Cisco World]

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipaddr_dhcp/configuration/xe-3s/dhcp-xe-3s-book/config-dhcp-server-xe.html#GUID-BCEB43D4-8C44-4C86-BBAA-6B977196D35C

Sincr asr1k use ios xe then

Use static map for this case.

MHM

[M02@rt37]

Hello @dominiaz 

You can configure a DHCP server to assign IP addresses to clients based on their MAC addresses. This is known as DHCP address binding or DHCP reservations.

As example:

ip dhcp pool MY_POOL
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
dns-server 8.8.8.8

ip dhcp pool MY_POOL
host 0011.2233.4455 192.168.1.10
host 00AA.BBCC.DD22 192.168.1.20

This example assumes a subnet of 192.168.1.0/24, a default gateway of 192.168.1.1, and DNS server 8.8.8.8. The two hosts with MAC addresses 0011.2233.4455 and 00AA.BBCC.DD22 will be assigned static IP addresses 192.168.1.10 and 192.168.1.20, respectively.

[dominiaz]

(dhcp-config)#host 0011.2233.4455 192.168.1.10
^
% Invalid input detected at '^' marker.

[M02@rt37]

Ok @dominiaz 

separate like this:

ip dhcp pool CLIENT_10
host 192.168.1.10 255.255.255.0
client-identifier 0011.2233.4455

!

ip dhcp pool CLIENT_11
host 192.168.1.11 255.255.255.0
client-identifier xxxxx

!
ip dhcp pool CLIENT_12
host 192.168.1.12 255.255.255.0
client-identifier yyyyy

[dominiaz]

Working:

ip dhcp pool CLIENT_10
host 192.168.1.10 255.255.255.0
client-identifier 013e.f86b.b174.f5

Not working:

ip dhcp pool CLIENT_10
host 192.168.1.10 255.255.255.0
hardware-address 3ef8.6bb1.74f5

Why?

[MHM Cisco World]

https://mrncciew.com/2013/06/10/ios-dhcp-add-reservation/

Both must be work but some time device send different mac that it appear in show interface' so we use cleint id option which can not modify or change.

MHM