Solved

MAC Address incomplete?!

Posted on 2013-01-29
2
774 Views
Last Modified: 2013-02-14
OK, this is an odd one.  I have a couple of VxWorks device on the same subnet as a windows server 2008 (that they require talking to).   When we run an arpShow from any of the VxWorks devices, the server's MAC shows up missing the last digit in the table.  Actually i believe it's the second to the last as it shows as xx:xx:xx:xx:xx:9 when it should be xx:xx:xx:xx:xx:09.

Any ideas?  I don;'t have anything else on that subnet, and communication began to get iffy between the server and VxWorks devices recently after a subnet change.
0
Comment
Question by:JamesonJendreas
2 Comments
 
LVL 78

Expert Comment

by:David Johnson, CD, MVP
ID: 38834344
hex 09 is the same as hex 9, the only time 2 digits are required is if the subset is > hex F
1:2:3:4:5:6 is exactly the same as 01:02:03:04:05:06
0
 
LVL 21

Accepted Solution

by:
Rick_O_Shay earned 500 total points
ID: 38835315
I have seen some utilities drop leading zeroes when displaying MAC addresses as well. Makes things very confusing. Can you check the switch's mac table, or the ARP table on a different device, or a packet capture and confirm what MAC is actually being used on the wire?
0

Featured Post

Integrate social media with email signatures

Is your company active on social media? Do you also use email signatures? Including social media icons in your email signature is a great way to get fans for free. Let all your email users know you’re on social media quickly and easily, in a single click.

Join & Write a Comment

Data center, now-a-days, is referred as the home of all the advanced technologies. In-fact, most of the businesses are now establishing their entire organizational structure around the IT capabilities.
PRTG Network Monitor lets you monitor your bandwidth usage, so you know who is using up your bandwidth, and what they're using it for.
This tutorial will walk an individual through configuring a drive on a Windows Server 2008 to perform shadow copies in order to quickly recover deleted files and folders. Click on Start and then select Computer to view the available drives on the se…
This tutorial will walk an individual through setting the global and backup job media overwrite and protection periods in Backup Exec 2012. Log onto the Backup Exec Central Administration Server. Examine the services. If all or most of them are stop…

759 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

19 Experts available now in Live!

Get 1:1 Help Now