3Com 86-0621-000, C36460T PM-SM Not Supported, Over Nbma Media, RouteDiscovery, Vrrp Configuration

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	checksums on the PIM headers only. Enterprise OS devices, when acting as RPs,
	are capable of accepting register checksums in both formats. In the scenario
	where Cisco IOS devices are the RPs and Enterprise OS devices act as sender
	designated routers (DRs), a super user command 'SU PIM RegCksum FullPayload'
	is required on the Enterprise OS devices.
PM-SM Not Supported	Currently PIM-SM is not supported over non-broadcast, multiaccess (NBMA)
Over NBMA Media	datalink media. Such media include IP-IP Point-to-Multipoint (P2MP) tunnels and
	Frame Relay configured on parent ports.
RouteDiscovery	If RouteDiscovery is enabled on all protocols (-SR RouteDiscovery = All), in the
	maximum packet forwarding rate drops significantly during route discovery. 3Com
	recommends that you enable RouteDiscovery only for the protocols you use.
	Increasing the value of the -SR HoldTime parameter minimizes the drop in
	forwarding rate for these protocols.
VRRP Configuration	VRRP cannot coexist with DECnet, LAA, OSI, or IPv6.
Network	This section describes notes, cautions, and other considerations to be aware of
Management System	when using the Enterprise OS software when working with network management
and Services Notes	system services. The topics are presented in alphabetical order.
ASCII Boot	When using the ASCII Boot feature on a NETBuilder II bridge/router with intelligent
	I/O modules or a PathBuilder S5xx series switch, configuration commands that
	apply to the physical ports on the intelligent I/O modules or to the physical ports
	on the PathBuilder may not get configured correctly if they are the first commands
	executed in the boot.cfg file. There is a small timing window where the
	commands affecting the physical ports will not execute successfully because the
	software drivers have not finished initializing the ports.
	This problem can be avoided by either including a PAuse command at the
	beginning of the boot.cfg file to delay the execution of the first configuration
	command by a few seconds or by putting the configuration commands that do
	not apply to the physical ports at the beginning of the boot.cfg file. The intelligent
	I/O modules on the NETBuilder II bridge/router are the HSS 4-Port WAN Module,
	the MP ATMLink Module, the MP Ethernet 6-Port 10BASE-FL Module, and the HSS
	8-Port BRI Module. Support for the PAuse command by the ASCII Boot feature
	(and LoadConfigs) is new with the Enterprise OS software version 11.4.
Boot Cycle	If the OfficeConnect bridge/router fails to complete the boot cycle and enters a
Continuous Loop	boot cycle loop (for example, if the boot image is corrupted), press the ESC key to
	interrupt the boot cycle and enter monitor mode.
BootP Server and	To use the Enterprise OS software version 11.4 Autostartup feature, you must
Autostartup	upgrade the remote node, the central site, and if you are using the 3Com BootP
	server, you must upgrade that as well. Autostartup supports a non-3Com BootP
	server if the remote node is identified by its MAC address.
Bootptab File	The 3Com BOOTP Server for Windows does not read the bootptab file for any
	date greater than 2000. The problem resides in Microsoft's system libraries. A
	patch can be downloaded from Microsoft. This patch can be found at the
	following URL: