HP Hub-8U/16U Agent Release History
===================================


HP Hub-8U/16U Agent Firmware Release Note
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Product Name: J3133A AdvanceStack Hub 8U/16U SNMP Module
Version: A.01.01
Description: Initial release
Date of Release: 1/18/96
Hub(s) supported: J2610B Hub-8U
		  J2611B Hub-16U
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HP Hub-8U/16U Agent Firmware Release Note
-----------------------------------------
Product Name: J3133A AdvanceStack Hub 8U/16U SNMP Module
Version: A.01.02
Description: Feature upgrade, providing support for IP addresses in
	     "subnet zero", and in the "all ones" subnet.
	     A.01.02 also includes several bug fixes, documented below.
Date of Release: 4/15/98
Hub(s) supported: J2610B Hub-8U
		  J2611B Hub-16U


==============================
BUG FIXES (since last release)
==============================
NMT3291:
      The denial-of-service attack known as "Land Attack" (source code
      "land.c" or "moreland.c"), causes the hub agent to hang, and
      eventually reboot.  This attack involves a TCP SYN packet with
      the destination IP address equal to the source IP address.
      Such packets are now detected and discarded.
NMT3395:
      If the hub agent is subjected to giant IP packets, (for example,
      giant pings), agent network communications can hang.
      This problem is now fixed.
NMT3396:
      Under rare conditions with IPX traffic sent to the hub agent,
      agent network communications can hang.  This problem is now fixed.


=================================
ENHANCEMENTS (since last release)
=================================
Feature: Added CIDR support

     To customers, this translates to the ability to set the subnet
     extension of an IP address to all zeros or all ones.  Prior to
     CIDR, this was illegal and our firmware prevented it.  An example
     of IP addresses now supported would be:
	CLASS B:   255.255.  0.  0     Default net mask for CLASS B
	mask:      255.255.255.  0     Commonly-used subnet mask
	IP address: 15. 29.  0.182     Zero subnet extension, now legal
	IP address: 15. 29.255.182     Ones subnet extension, now legal

     Also supported is the ability to set the subnet mask to a supernet
     value.  This is a subnet mask that is shorter than the CLASS
     default mask.  For example:
	CLASS C:   255.255.255.  0     Default net mask for CLASS C
	mask:      255.255.  0.  0     Supernet mask (fewer bits)