Datasheet

17
Release Notes for Catalyst 4500 Series Software Release 7.x
OL-1983-28
New Features for Supervisor Engine Software Release 7.1
The authentication login lockout feature is a lockout (delay) timer. It is configurable from the CLI
and SNMP through the set authentication login lockout command. The configurable range is 30 to
600 seconds; setting the lockout time to zero (0) disables the feature.
If you are locked out at the console, the console does not allow you to log in during that lockout
time. If you are locked out from a Telnet session, the connection closes when the limit is reached.
Furthermore, the switch closes any subsequent access from that station during the lockout time and
provides an appropriate notice.
• Errdisable reactivation
You can manually prevent a port from being reactivated by setting the errdisable timeout for the port
to disable; you can do this with the set port errdisable-timeout mod/port disable command.
• Ethernet link debounce timer feature
The debounce time is the time a module's firmware waits before notifying the supervisor engine of
a link change at the physical layer when a link goes down. If the link is up and then goes down and
remains down for a time interval longer than the debounce time, the supervisor engine is notified.
As soon as the link is up again, the timer is reset. If the link is down and then goes up, the supervisor
engine is notified immediately. The debounce timer value is fixed in the supervisor engine
depending upon the type of module being used. The link debounce feature can be enabled per port
on Ethernet modules.
• VMPS server
Catalyst 4500 series switches can function as VMPS servers.
New Features for Supervisor Engine Software Release 7.1
This section describes the new hardware and software features available in software release 7.1.
Hardware Features
This hardware feature is new to software release 7.1:
• 48-port Gigabit Ethernet 10/100/1000 switching module (WS-X4448-GB-rj45)
Software Features
These software features are new to software release 7.1:
• IEEE 802.1s Multiple Spanning Tree (MST) over 802.1Q VLAN trunks
MST is an IEEE standard. 802.1s for MST is an amendment to 802.1Q. MST extends the 802.1w
Rapid Spanning Tree (RST) algorithm to multiple spanning trees. This extension provides for both
rapid convergence and load balancing in a VLAN environment. The MST protocol is still being
developed and the MST feature for this release is based on a draft version of the IEEE standard. The
protocol as implemented in this release is backward compatible with 802.1D STP, 802.1w, the rapid
STP, and the Cisco PVST+ architecture.
• IEEE 802.3ad Link Aggregation Control Protocol (LACP)