Cisco® announces Cisco IOS® Software updates for Cisco Catalyst® 3750-E, 3750, 3750 Metro, 3560-E, 3560, 3550, 2970, and 2960 Series Switches; Cisco ME 3400 and ME 2400 Series Ethernet Access Switches; and Cisco Catalyst Blade Switch 3000 Series. This release furthers Cisco leadership by providing integrated services for wide area acceleration, secure voice, multicast and manageability for enterprise deployments, and enhancements on the Metro Ethernet access switches.
• Web Cache Control Protocol Version 2 (WCCPv2): WCCP enables Wide Area Acceleration Services (WAAS), resulting in improved application response time and conservation of WAN bandwidth. With WCCP enabled, a switch redirects content requests (HTTP, FTP, and other TCP-based applications) to content servers such as a wide area application engine to serve content locally. A switch supports up to eight service groups, by load balancing among various wide area application engines. Access control policies can be applied to disable caching for certain clients, servers, or client-server pairs for maximum flexibility.
• Platform Independent Multicast (PIM) stub: PIM stub functionality can now be deployed on edge (access) switches using an IP Base feature license, for enabling basic multicast applications such as music on hold in routed access deployments. PIM stub is limited to edge/access switch deployments. For the distribution layer, an IP Services feature set is required for complete PIM multicast support.
• Virtual LAN (VLAN) Flex Links load balancing: Flex Links provides Layer 2 redundancy without requiring Spanning Tree Protocol (STP). A pair of interfaces configured as primary and backup links can load balance traffic based on VLAN. VLAN-based load balancing improves network throughput by utilizing both links for traffic distribution for different VLANs. In case of a link failure, affected VLANs will be carried over by the other link.
• Link Layer Discovery Protocol (LLDP) and LLDP Media Extensions (LLDP-MED): Add support for IEEE 802.1AB link layer discovery protocol for interoperability in multivendor networks. Switches exchange speed, duplex, and power settings with end devices such as IP phones.
• VLAN-aware port security: When security violations related to port security and spanning tree BPDU Guard are detected, a switch disables the port to protect the network. When a violation is detected on a data VLAN, a switch can be configured to take action only on affected the VLAN. Voice VLAN traffic is not disrupted, increasing network availability.
• IP phone detection enhancement: When a Cisco IP Phone is discovered in the network, additional security checks are performed for inline power, thus mitigating the risk of IP phone spoofing.
• Port Security with private VLANs (PVLANs): Port security can now be enabled on PVLAN interfaces, extending port security benefits of limiting the number of MAC addresses to PVLAN interfaces.
• Dynamic Host Configuration Protocol (DHCP) snooping statistics: Provides visibility into DHCP snooping for proactive management. Displays statistics about processed packets and various conditions that can cause a packet to be dropped (such as packet not allowed on untrusted port and so on). In addition, rate-limited SYSLOG messages can be generated for notification.
• Power over Ethernet (PoE) MIB for Cisco Catalyst 3550 Series Switches: Adds support for CISCO-POWER-ETHETNET-EXE-MIB for Cisco Catalyst 3550 Series (already supported on Cisco Catalyst 3750, 3750-E, 3560, and 3560-E Series Switches). It provides PoE visibility and allows administrators to proactively monitor power usage.
• Cisco Error Disable MIB: CISCO-ERR-DISABLE-MIB provides visibility into ports/VLANs that have been disabled because of error conditions and the reason (such as security violations related to port security, STP guard features, Unidirectional Link Detection Protocol [UDLD] violation, and so on), which helps in troubleshooting network problems.
• Time domain reflectometry (TDR) MIB: CISCO-CABLE-DIAG-MIB displays approximate distance to a cable fault, which is extremely useful for troubleshooting cable cuts/disconnects.
• Border Gateway Protocol (BGP) route map "continue" for outbound interfaces: Provides BGP route decision flexibility. When a continue clause is configured, the route map will continue to evaluate and implement match clauses in the specified route map entry after a successful match occurs. The continue clause can be configured to go to (or jump to) a specific route map entry by specifying the sequence number or to continue with the next sequence number.
• Auto rendezvous point (RP): Automates rendezvous point setup for PIM deployments. Enables automatic discovery and distribution of multicast group-rendezvous point mapping, simplifying multicast setup.
• IP Unicast Reverse Path Forwarding (URPF): Improves security for both IPv4 and IPv6 networks by detecting and mitigating denial-of-service (DoS) attacks by IP source address spoofing. URPF performs source-based IP packet filtering, dropping packets with spoofed source IP addresses, which protects the network during an attack.
Table 1. Cisco IOS Software Release 12.2(37)SE New Features for Enterprise Switches
Table 2. Cisco Catalyst Switches Supported with Cisco IOS Software Release 12.2(37)SE
• Multiprotocol Label Switching (MPLS) Operations, Administration and Maintenance (OAM):Set of tools that will allow customers to easily monitor and troubleshoot MPLS networks. Service providers will now be able to perform ping and traceroute on label switched paths (LSPs).
• Ethernet Local Management Interface (ELMI) customer equipment: ELMI is a protocol between the service provider network and the customer equipment. It lets the customer equipment communicate its status and different service characteristics to the service provider network to ease troubleshooting and deployments. This feature allows the Metro Ethernet switches to be the customer equipment for ELMI.
• CISCO-DATA-COLLECTION-MIB: This feature allows data to be collected at a scheduled interval to better help service providers to manage their network resources. Without this feature, the backend server would have to constantly monitor each access switch to collect statistics.
• CISCO-PROCESS-MIB: This feature allows a trap to be sent whenever a CPU exceeds a user-configured threshold. This tool will enable customers to monitor their network for overutilization, DoS attacks, or misconfiguration.
Table 3. Cisco Catalyst Metro Ethernet Switch Features Supported with Cisco IOS Software Release 12.2(37)SE
Table 4. Cisco Catalyst Metro Ethernet Switches Supported with Cisco IOS Software Release 12.2(37)SE
• Cisco IOS Software Upgrade Planner: http://www.cisco.com/cgi-bin/Software/Iosplanner/Planner-tool/iosplanner.cgi?majorRel=
• Guest-Level Access Planner: http://www.cisco.com/kobayashi/sw-center/index.shtml
• Cisco Catalyst 3750-E Series Switches: http://www.cisco.com/en/US/products/ps7077/index.html
• Cisco Catalyst 3750 Series Switches: http://www.cisco.com/go/catalyst3750
• Cisco Catalyst 3560 Series Switches: http://www.cisco.com/go/catalyst3560
• Cisco Catalyst 3560-E Series Switches: http://www.cisco.com/en/US/products/ps7078/index.html
• Cisco Catalyst 3550 Series Switches: http://www.cisco.com/go/catalyst3550
• Cisco Catalyst 2970 Series Switches: http://www.cisco.com/go/catalyst2970
• Cisco Catalyst 2960 Series Switches: http://www.cisco.com/go/catalyst2960
• Cisco Catalyst 3750 Metro Series Switches: http://www.cisco.com/go/catalyst3750metro
• Cisco ME 3400 Series Ethernet Access Switches: http://www.cisco.com/en/US/products/ps6580/index.html
• Cisco ME 2400 Series Ethernet Access Switches: http://www.cisco.com/en/US/products/ps6581/index.html
• Cisco Catalyst 3750, 3560, 3550, 2970, and 2960 Series release notes:
• Cisco Catalyst 3750 Metro and ME 3400/2400 Series release notes:
• Cisco EtherSwitch® service modules for Cisco 2600 Series Multiservice Platforms, Cisco 2800 and 3800 Series Integrated Services Routers, and Cisco 3700 Series Multiservice Access Routers: http://www.cisco.com/en/US/products/ps5854/products_data_sheet0900aecd8028d15f.html
Software Image Migration Guide
Figure 1. Cisco IOS Software Release 12.2 Release Train