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Port Configuration & Performance
The switch features 48 multipurpose 1/10/25 Gigabit Ethernet SFP28 downlink ports and 4 fixed 40/100 Gigabit Ethernet QSFP28 uplink ports, all housed in a compact 1RU form factor. Every port supports hardware-based AES-256 MACsec encryption. Performance scales up to 3.2 Tbps switching capacity (full duplex) with a forwarding rate of 1 billion packets per second (Bpps), backed by an 80 MB dedicated low-latency buffer that ensures wire-speed, non-blocking forwarding for demanding applications. An x86 CPU with 8 cores / 2.4 GHz, 32 GB DDR4 memory, and 16 GB flash enables programmability and telemetry.
High Availability & Security
Deployed at enterprise core/aggregation layers, the C9500-48Y4C supports StackWise Virtual (via two 10/40 Gig links per switch, Cisco IOS XE 16.6.x later) for high-density two-node clustering, along with NSF/SSO, ISSU, redundant platinum-rated hot-swappable power supplies and fans . Advanced security includes 802.1X, Trustworthy Systems, DHCP Snooping, and Flexible NetFlow (96,000 entries), with SD-Access ready for policy-based automation and segmentation from edge to cloud (Cisco DNA subscription required) .
Software & Ideal Deployment
The platform runs on Cisco IOS XE, supporting full L2/L3 dynamic routing, MPLS, VXLAN, VRF-Lite, and network programmability via NETCONF / RESTCONF. Available with perpetual Network Essentials for foundational features or Network Advantage for full routing (BGP, OSPF, EIGRP, IS-IS). A mandatory Cisco DNA subscription unlocks advanced automation and assurance. The C9500-48Y4C series is ideal for campus cores, collapsed cores, and high-throughput aggregation requiring dense 25G downlink ports plus 100G scalability for long-term investment protection.
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