Wired Intelligent Edge (Campus Switching and Routing)

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Occasional Contributor I

DHCP relay difference in Provision and Comware7

Hi,

 

I'm currently shifting from a Procurve 5412zl to a Comware 5500 as routing switch for most of my vlans.

 

They both use DHCP relay to the same server, but i see a difference in the DHCP response packets from client perspective.

 

Comware

DHCP DISCOVER

DHCP OFFER arrived:

 From remote host: 10.26.62.1:67 target: 10.26.62.67 received on en8: 10.26.62.66:68

 yiaddr: 10.26.62.67

  OptionClientID: DHCPTest

DHCP REQUEST

DHCP ACK arrived:

 From remote host: 10.26.62.1:67 target: 10.26.62.67 received on en8: 10.26.62.66:68

 yiaddr: 10.26.62.67

  OptionClientID: DHCPTest

 

 

 

Provision

DHCP DISCOVER

DHCP OFFER arrived:

 From remote host: 192.168.30.13:67 target: 10.28.3.72 received on en8: 10.28.3.71:68

 yiaddr: 10.28.3.72

  OptionClientID: DHCPTest

DHCP REQUEST

DHCP ACK arrived:

 From remote host: 192.168.30.13:67 target: 10.28.3.72 received on en8: 10.28.3.71:68

 yiaddr: 10.28.3.72

  OptionClientID: DHCPTest

 

As you can see, Comware hides the DHCP server address, where as Provision shows the actual ip address.

 

This means that, when using DHCP spoofing on all my connected Provision 5400, i need to add the gateway address for each subnet as trusted DHCP server.

 

Is there a way to configure Comware7 to NOT hide the DHCP server ip address?

 

Boot image: flash:/5510hi-cmw710-boot-r1122p02.bin
Boot image version: 7.1.045, Release 1122P02
Compiled Jul 03 2017 16:00:00
System image: flash:/5510hi-cmw710-system-r1122p02.bin
System image version: 7.1.045, Release 1122P02
Compiled Jul 03 2017 16:00:00

 

 

 

Br,

Thomas

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