Datasheet

15
Release Notes for Catalyst 4500 Series Software Release 7.x
OL-1983-28
New Features for Supervisor Engine Software Release 7.4
You can enable unicast flood blocking on any Ethernet port on a per-port basis. Unicast flood
blocking allows you to drop unicast flood packets on an Ethernet port that has only one host
connected to the port. All Ethernet ports on a switch are configured to allow unicast flooding;
unicast flood blocking allows you to drop the unicast flood packets before they reach the port.
• Rapid PVST+
Rapid PVST+ is the same as PVST+, although Rapid PVST+ utilizes a Rapid STP that is based on
IEEE 802.1w instead of 802.1D. Rapid PVST+ uses the same configuration as PVST+ and you need
only minimal extra configuration.
• RADIUS enhancement
The framed-ip-address is now sent in the RADIUS authentication access-request packet.
• SNMP broadcast suppression enhancement
• SNMPv1 and SNMPv2c enhancements:
– Setting multiple SNMP community strings
– Clearing SNMP community strings
– Specifying access numbers for hosts
– Clearing IP addresses associated with access numbers
– Specifying, displaying, and clearing an interface alias
• Support for these new and enhanced MIBs:
– CISCO-FLASH-MIB enhancement
– CISCO-VLAN-MEMBERSHIP-MIB enhancement
– CISCO-VTP-MIB enhancement
– RFC 2665 ETHERLIKE-MIB enhancement
– RFC 2863 IF-MIB enhancement
– RFC 2737 ENTIT-MIB enhancement
– CISCO-STP-EXTENSION-MIB enhancement
New Features for Supervisor Engine Software Release 7.4
This section describes the new hardware and software features available in software release 7.4.
Hardware Features
These hardware features are new to software release 7.4:
• Catalyst 4503 chassis (WS-C4503)
• Catalyst 4506 chassis (WS-C4506)
• 1000 W power supply (PWR-C45-1000AC and PWR-C45-1000AC/2)
• 2800 W power supply (PWR-C45-2800ACV and PWR-C45-2800ACV/2)
• 1300 W variable power supply (PWR-C45-1300ACV and PWR-C45-1300ACV/2)