Cisco Cisco IOS Software Releases 12.2 MC 集約されたデータ

Product Bulletin

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Cisco IOS Software Release 12.2(46)SE for Cisco Catalyst
3750-E, 3560-E, 3750, 3560, 2960, and Cisco Catalyst
Blade Switch Series

PB493554

Cisco

announces Cisco IOS

Software updates for Cisco Catalyst

3750-E, 3750,

3560-E, 3560, 2960, and Cisco Catalyst Blade Switch Series. This release furthers Cisco

leadership by providing integrated services for Layer 2 and Layer 3 networks, IPv6, and

manageability for enterprise deployments.

This product bulletin contains content and delivery information for Cisco IOS Software Release

12.2(46)SE.

The following new features are available with Cisco IOS Software release for enterprise Ethernet

switches:

●

Hot Standby Router Protocol (HSRP) Version 2: HSRP version 2 provides improved high

availability and faster convergence in case of network failure. The new enhancements

include millisecond timer values and a larger range of group numbers.

●

Enhanced Port Aggregation Protocol (PAgP): PAgP has been enhanced to support the

Virtual Switching System (VSS) over EtherChannel

. The switch will automatically serve as

a VSS client, using enhanced PAgP on this EtherChannel for dual-active detection.

●

Disable per VLAN MAC Learning: Conservation of switch resources is an important

consideration in large-scale networks. The ability to disable the learning of host MAC

addresses on a per VLAN basis allows the user to select how hardware resources are

utilized within the switch. This capability improves scalability of resources in a Layer 2

network.

●

Autostate Exclude: Autostate exclude mode allows you to specify the ports to exclude

from Autostate. In normal Autostate mode, the Layer 3 interfaces remain up if at least one

port in the VLAN remains up. If you have appliances, such as load balancers or firewall

servers that are connected to the ports in the VLAN, you can configure these ports to be

excluded from the Autostate to make sure that the forwarding switched virtual interface

(SVI) does not go down if these ports become inactive.

●

Dynamic Host Configuration Protocol (DHCP) for IPv6: DHCP client, server and relay

for IPv6 addresses are now supported. DHCP allows automated configuration and IP

address allocation in an IPv6 network.

●

HSRP for IPv6: HSRP is used by customers to provide high availability and allow fast

convergence during a network outage. HSRP now supports IPv6 networks.

●

Enhanced Object Tracking (EOT) Static Route Support: Reliable static routing EOT

allows users to track static routes using parameters based upon connectivity, latency,

packet loss, and jitter and force a failover to utilize a backup route under adverse network

conditions.