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weird MAC address from v1910 switch

 
prouleau0
Occasional Visitor

weird MAC address from v1910 switch

Hi,

 

We have installed a v1910-24G switch and it gave us some difficulties.

 

It turns out that the switch is not using a standard MAC address, but a very weird one. The switch query the DHCP server   with this value:

643037652e323832322e636135382d566c616e2d696e7465726661636531

 

The official MAC address is d0-7e-28-22-ca-57, however when I ping its IP address, the arp table shows this MAC instead: d0-7e-28-22-ca-58 (the last digit is different).

 

Is this a sign that the switch is broken and should be returned?

 

 

 

P.S. This thread has been moevd from Switching > Comware-Based to Web and Unmanaged - HP Forum Moderator 

1 REPLY
Peter_Debruyne
Honored Contributor

Re: weird MAC address from v1910 switch

Hi,

 

The value you refer to is the client identifier, which is typically the hostname for a normal pc.

In this case the switch will use the vlan id and the mac as the identifier.

The actual value is hex encoded, so when translated to text (use eg  http://home.paulschou.net/tools/xlate/ - fill in the value in the hex column and decode), you actually get

d07e.2822.ca58-Vlan-interface1

 

So this is a perfectly normal client identifier.

 

A switch typically has a range of mac addresses, on the box you will find the base mac address, each interface or vlan will get an incremental value of the base mac address, so again this is normal behavior.

 

Best regards,Peter