This can be easily achieved by reserving an IP address for each. While this eliminate boring routine work and overheads, you still need to control the IP assignment process to manage who get access to the network. As a System Admin you deploy DHCP server to give out IP addresses to client computers dynamically. If an external DHCP server is not found, the IP address.Adding bulk DHCP reservations. 2012, the airOS Configuration Interface will verify whether. Some were right after the other (1 or 2 seconds) othersDHCP Address Reservation.That led me to figuringOut what this number is. They all have unique first 3 characters, but everything after that is 1150a. 0401150a, 1701150a, 1901150a, hmmm. What surprised me was that these bad_address entries' reservations were changed to have an invalid MAC address.All of them start with a 0 or a 1 and are only 8 characters long. Some of them seemed to remember their IP and are still functional, even though their reservation says bad_address.a configuration change affected DHCP packet relay a configuration mistake happened during new installation or media access control (MAC) address filtering.I assume they will fail either at lease renewal or the next time they are power cycled.And, the most possible cause is IP conflict.0401150a -> 04 01 15 0a (hex) -> 4 1 15 10 (decimal) -> 10.15.1.4 (IP address)Meanwhile, I agree with the possible cause as you said, however, would you please kindly let us know the following:1. And this isn't the first time we've seen it happen this way.Firstly, it seems that the Unique ID of the DHCP Reservations are inverted to the IP addresses in hex. And it only happens on one model of our printer. Why would the DHCP server replace the MAC with this convoluted string? Is this covered in any manual?I am pretty sure it's not in the DHCP RFC.Not sure why it was having the problem, unless somehow the printers were powering and made the DHCP request then discovered that the old lease information was kept somehow (remember, some of the outages were very brief) after the request had gone out.But that, and nothing else I can think of makes sense.DO other DHCP clients in the same scope have the same issue?In addition, if Conflict detection is enabled in your DHCP Server, please disable it and see how it works.Also, please check if you can get some clues from this TechNet Thread:In addition, as the issue only occur with the same model of printers, it is worth to contact the vendor for their insight on it. Are the printers both statically configured and have DHCP Reservations in the DHCP Server?4.
0 Comments
Leave a Reply. |
Details
AuthorMike ArchivesCategories |