Related: cisco 3560 cisco 2621xm cisco 3750 cisco 3550 emi cisco 2611 cisco 3750g cisco catalyst 3550 cisco 2960 cisco 2950 cisco switch ccnp lab cisco 2600 Include description Categories Cisco Catalyst 3550 Series Intelligent Ethernet Switches Product Overview The Cisco Catalyst® 3550 Series Intelligent Ethernet Switches is a line of enterprise-class, stackable, multilayer switches that provide high availability, security and quality of service (QoS) to enhance the operation of the network. With a range of Fast Ethernet and Re: Catalyst 3550-12T tnewshott Jun 9, 2011 6:00 AM ( in response to Zsigmond P.Toth - CCNA, HP AIS ) I would recommend selling all of those devices and trying to get some 3550s, they are the lowest model switch I would recommend studying on for CCNP or higher candidates. I can't find IOS 15 for Catalyst 3550 at Cisco site. And someone also told me there is no IOS 15 for Catalyst 3550. Is that true? I want to use IPv6 on the switch. Right now the switch has 12.2(44)SE6. I can enable Ipv6 uni-casting. And I can set up a VLAN that takes IPv6 address. Does it mean this IOS support all necessary IPv6 functions? Find great deals on eBay for Cisco catalyst 3550. Shop with confidence. fixed in the newer Catalyst 3550 platform, although Cisco has chosen to stick with IOS as opposed to the set-based OS running on the older Catalyst switches. Cisco has also been migrating the Catalyst 6000/6500 series to Native IOS. Soon every switch from the 8540 down to the 2950 will run Cisco IOS out of the box. Security Features: Switch Cisco 3750 allows dynamic security features like the port based security, user authentication, dynamic VLAN assignment and extended IP security. Some other security features include. Manageability: Each Cisco Catalyst 3750 Series stack has a single IP address and this helps in its proper management. For example, when 3 product ratings - Cisco Catalyst 3550 Series WS-C3550-48-EMI Switch w/ WS-G5486-NHR Module, TESTED