Specifications

36 ExtremeWare 7.0 Release Notes
Clarifications, Known Behaviors, and Resolved Issues
UDP Echo Transmit Rate
The UDP Echo utility is designed to verify network connectivity. Transmit rates of 10 pps suffice for this
function. UDP Echo rates of 20 pps should be sufficient. Do not set your UDP Echo rate higher than 100
pps, as the switch does not send replies faster than that rate (1-FAO89).
The disable learning Command and Flooding
The disable learning command does not remove the port from the security flood list. Thus, you cannot
disable flooding when learning is disabled (PD2-73199618).
Port Mirroring
When a multicast packet egresses from a port, two copies of the packet are sent to the mirror port. This
does not affect network traffic in any way, as the duplicate packets are sent only to the mirror port. This
does affect accounting and RMON statistics (1-DQK86).
Port mirroring is not supported across BlackDiamond modules (PD2-89313413).
Port mirroring is not supported with CPU-generated traffic (1-64H4J).
Setting Auto-negotiation Off on a Gigabit Port
When connecting to a device that does not support 802.3z auto-negotiation, turn off auto-negotiation for
the switch port to which it is connecting. Although a gigabit port only runs at full duplex and at gigabit
speed, the command to turn auto-negotiation off must still specify duplex. For example:
config port 4 auto off duplex full
will turn auto-negotiation off if port 4 is a gigabit port.
Enabled IdleTimeouts and Console Connections
If the IdleTimeout feature is enabled, and a telnet session times out, a subsequent telnet to the switch
will be successful but existing direct serial console connections will pause or hang. If the subsequent
telnet session is terminated, the console port will resume normal function and subsequent telnet
sessions will work correctly (5094).
User Accounts
User account usernames and passwords can have a maximum of 30 characters (PD2-101617708).
TFTP Download of Configuration Files
When using TFTP to download a configuration file and selecting “no” for the switch reboot request,
rebooting the switch at a later time will display a message that the configuration file has been
corrupted. The user will be prompted to reboot the switch with factory default parameters. If an
immediate reboot is performed after the download configuration command, the configuration file will
be initiated correctly (12413).
Port Tag Limitation
There is an absolute limit of 3552 port tags available in a system. The usage of these port tags depends
on a combination of factors: