User's Manual

Product Support Notice © 2010 Avaya Inc. All Rights Reserved.
PSN #
PSN003020u
Original publication date: 6-Sep-10. This is Issue # 1, published date: 6-
Sep-10.
Severity/risk level
Medium
Urgency
When convenient
Name of problem
Avaya phones do not follow the client server interaction as per DHCP RFC2131.
Products affected
All 96xx and 46xx – all firmware releases
Problem description
In some scenarios when IP addresses are being used and DHCP server offers the addresses to 46xx and 96xx phones sending
DHCPOFFER, the phones decline the IP addresses in DHCP Offers sending DHCPDECLINE (as the IP addresses are being used).
This violates DHCP RFC2131, which states that DHCPDECLINE shall be sent after DHCPACK but not after DHCPOFFER, which is
what the 46xx and 96xx phones do.
Resolution
We will not be changing our phone’s current behavior since it is Operating System code (in this case DHCP). Many code changes
would be required and therefore it is too risky to build a firmware patch.
Workaround or alternative remediation
n/a
Remarks
n/a
Patch Notes
The information in this section concerns the patch, if any, recommended in the Resolution above.
Backup before applying the patch
n/a
Download
n/a
Patch install instructions Service-interrupting?
n/a No
Verification
n/a
Failure
n/a
Patch uninstall instructions
n/a
Security Notes
The information in this section concerns the security risk, if any, represented by the topic of this PSN.
Security risks
n/a
Avaya Security Vulnerability Classification
Not Susceptible
Mitigation
n/a