Trying to configure Reserved IP but client MAC address not available

[David Elliott]

I am trying to use ISC-DHCP version 4.3.1 running on Ubuntu 12.4 to hand out same IP address to a set of 5-10 VPN clients.  VPN device is Cisco ASA 5520 and I have the DHCP server configured in the ASA tunnel-group and the network-scope configured in the Group-policy

ASA sends DHCPDISCOVER with MAC Address  from interface on the ASA, but   dhcp-client-identifier= \000cisco-001b.d5e8.eb93-A000140611-Trusted\000

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I tried substituting dhcp-client-identifier instead of hardware ethenet in host statement, as follows, 

host test-Elliott-Lenovo-wireless {

          dhcp-client-identifier cisco-001b.15e8.cb93-A0001140611-Trusted;

          fixed-address 172.17.147.50;}

but that did not work.

1. Any ideas how to assign / match client since to assign  reserved IP when I cannot determine the client MAC ?

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[yrw22]

To solve the DHCP reservation issue on your Cisco ASA setup, you must match the exact string sent by the appliance. Since the ASA prepends a null byte or specific hardware type code to the dhcp-client-identifier, your host statement needs to reflect that precise hex value. While troubleshooting network configurations can be as intense as a high-stakes match in the He777 Game APK Free Download for Android, ensure your ISC-DHCP server's dhcp-client-identifier matches the packet capture exactly, often requiring a colon-separated hex format.