Cisco IOS Basic L3 Catalyst 4500 Supervisor Engines 2+/4/5 (RIP, St. Routes, IPX, AT) S4KL3-12225EWA= Manuale Utente
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802.1x Private Guest VLAN
The 802.1x private guest VLAN feature extends 802.1x guest VLAN to the private VLAN environment for Layer 2 isolation. When a port is
configured as a private VLAN host port, 802.1x private guest VLAN offers limited network access through a guest secondary PVLAN to users
without a 802.1x supplicant.
802.1x Radius-Supplied Session Timeout
The 802.1x RADIUS-supplied timeout feature allows a switch to determine the duration of a session and the action to take when the session’s timer
expires. Based on the value specified by a RADIUS server, a Cisco Catalyst 4500 Series Switch could reauthenticate a host when the timer expires.
This offers a standard mechanism for periodic 802.1x reauthentication based on a configurable timer.
DHCP Option 82 Pass Through
Option 82 in a Dynamic Host Control Protocol (DHCP) message is typically used to carry additional local information for user-access tracking.
Option 82 is usually inserted or removed by an access switch or a DSL access multiplexer (DSLAM) in a service provider environment. The DHCP
option 82 pass-through feature enables the Cisco Catalyst 4500 Series Switch to effectively transport these DHCP messages with option 82 in the
aggregation layer. It can be activated through switch global configuration.
Routing Information Protocol SNMP MIB
Read-only Routing Information Protocol (RIP) Version 2 SNMP MIB extension (RFC 1724) is supported. The optional peer table is not
yet provided.
SUPPORT
For more information about the Cisco Catalyst 4500 Series, visit
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat4000/index.htm
.
MIGRATION PATHS
Cisco IOS Software Release 12.2EW train offers the latest features for the Cisco Catalyst 4500 Series supervisor engines. Customers with Cisco
Catalyst 4500 Series supervisor engines who need the latest hardware support and software features should migrate to Cisco IOS Software Release
12.2(25)EWA.
Cisco IOS Software Release 12.2(18)EW1 and all subsequent 12.2(18)EW maintenance releases have only the feature set based on Cisco IOS
Software Release 12.2(18)EW for the Cisco Catalyst 4500 Series supervisor engines. Customers with Catalyst 4500 Series supervisor engines who
require the stability of a bug-fix maintenance release should stay with the Cisco IOS Software Release 12.2(18)EW maintenance releases.
Cisco IOS Software Releases 12.1(19)E1 through 12.1(26)E have only the feature set based on Cisco IOS Software Release 12.1(12c)EW1 for the
Cisco Catalyst 4500 Series supervisor engines. Customers with Catalyst 4500 Series supervisor engines who require the stability of a maintenance
release should migrate from 12.1E releases to the Cisco IOS Software Release 12.2(18)EW maintenance releases.
PRODUCT NUMBERS
Tables 1 and 2 provide product numbers and ordering information for Cisco IOS Software Release 12.2(25)EWA and for supporting hardware.