| Product Name | S49ES-12254XO Cisco 4948E Switch Software |
| Software Type | Network Operating System (NOS) |
| Supported Devices | Cisco 4948E Switch |
| Compatibility | Cisco IOS Software Release 12.2(54)SG or later |
| Layer 2 Features | VLANs, Spanning Tree Protocol, Port Aggregation Protocol, Link Aggregation Control Protocol, VLAN Trunking Protocol, Ethernet Channel |
| Layer 3 Features | Routing protocols (OSPF, EIGRP, BGP), Multicast Routing (PIM-SM, PIM-DM, IGMP), QoS, Access Control Lists (ACLs), Dynamic Host Configuration Protocol (DHCP), Hot Standby Router Protocol (HSRP) |
| Security | IEEE 802.1X, ACLs, SSH v1/v2, SSL, TACACS+, RADIUS |
| Management Protocols | SNMP v1/v2c/v3, RMON, Telnet, SSH, CLI, HTTP, HTTPS |
| Quality of Service (QoS) | Classification and marking, congestion management, policing, shaping, queueing |
| Multicast Routing Protocols | PIM-SM, PIM-DM, IGMP v1/v2/v3 |
| IPv6 Support | IPv6 unicast routing, IPv6 multicast routing, IPv6 ACLs, IPv6 QoS |
| Layer 2 Protocol Tunneling | Ethernet over MPLS (EoMPLS), VLAN over MPLS (VPLS), MPLS Layer 2 VPNs |
| High Availability | NSF/SSO, link-state tracking, virtual switch link (VSL) |
| Network Management | Cisco Network Assistant, CiscoWorks, Cisco Prime Infrastructure |
| Software Upgrade | In-Service Software Upgrade (ISSU) |
| Licensing | Cisco Software Licensing (CSL) |
| System Requirements | 1 GB RAM, 512 MB Flash memory |
| Package Contents | Software image, Release Notes, installation and configuration guides |
| Support | Cisco Technical Assistance Center (TAC) |
| Warranty | Cisco Standard Software Warranty |
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