How to Migrate Catalyst 3K to Catalyst 9K?
Introduction of the Cisco Catalyst 9000 switches has made a lot of enterprises thinking about changing their out of dated Catalyst devices to the latest series. Cisco Catalyst 3850 switch is one of most Cisco’s famous and popular access switches which you might find it in every branches all over the world. Currently, Cisco Catalyst 9300 series switches can be considered as a trustworthy replacement for Catalyst 3850 switches which can enable new features all over the network.
Cisco Catalyst 9300 switches besides their enhanced hardware and flexible and modular IOS XE, are able to represents Cisco Software-defined access architecture. This innovative Cisco architecture can help enterprises enabling Software –denied networking (SDN) technology within their networks in order to automate, manage and monitor numerous applications and their traffic in their network.
Customers can use the following chart in order to map the former Cisco Catalyst 3850 models to the Cisco Catalyst 9300 switches models:
| 3650 PIDs | 9300 PID | Short Description |
| WS-C3650-24TS
WS-C3650-24TD |
C9300-24T | 24-Port GbE with Modular Uplink |
| WS-C3650-48TS
WS-C3650-48TD |
C9300-48T | 48-Port GbE with Modular Uplink |
| WS-C3650-24PS
WS-C3650-24PD |
C9300-24P | 24-Port GbE PoE+ ports with Modular Uplink |
| WS-C3650-48PS
WS-C3650-48PD |
C9300-48P | 48-Port GbE PoE+ ports with Modular Uplink |
| WS-C3650-48FS
WS-C3650-48FD |
C9300-48U | 48-Port GbE UPOE ports with Modular Uplink |
| WS-C3650-8X24UQ | C9300L-24UXG-4X | Stackable 16 10/100/1000 Mbps and 8 Multi-Gigabit Ethernet (100 Mbps or 1/2.5/5/10 Gbps) UPOE ports; 4×10 GE SFP+ fixed uplink ports |
| WS-C3650-12X48UQ | C9300L-48UXG-4X | Stackable 36 10/100/1000 Mbps and 12 Multi-Gigabit Ethernet (100 Mbps or 1/2.5/5/10 Gbps) UPOE ports; 4×10 GE SFP+ fixed uplink ports |
| WS-C3650-12X48UZ | C9300L-48UXG-2Q | Stackable 36 10/100/1000 Mbps and 12 Multi-Gigabit Ethernet (100 Mbps or 1/2.5/5/10 Gbps) UPOE ports; 2×40 GE QSFP+ fixed uplink ports |
| 3750 PIDs | 9300 PID | Short Description |
| WS-C3750X-24T | C9300-24T | 24-Port GbE with Modular Uplink |
| WS-C3750X-48T | C9300-48T | 48-Port GbE with Modular Uplink |
| WS-C3750X-24P | C9300-24P | 24-Port GbE PoE+ ports with Modular Uplink |
| WS-C3750X-48P | C9300-48P | 48-Port GbE PoE+ ports with Modular Uplink |
| WS-C3750X-48PF | C9300-48U | 48-Port GbE UPOE ports with Modular Uplink |
| WS-C3750X-12S | C9300-24S | 24-Port GbE SFP With Modular Uplink |
| WS-C3750X-24S | C9300-24S | 24-Port GbE SFP With Modular Uplink |
| 3850 PIDs | 9300 PID | Short Description |
| WS-C3850-24T | C9300-24T | Catalyst 9300 24-port data-only switch |
| WS-C3850-24P | C9300-24P | Catalyst 9300 24-port PoE+ switch |
| WS-C3850-24U | C9300-24U | Catalyst 9300 24-port POE switch |
| WS-C3850-24XU | C9300-24UX | Catalyst 9300 24-port m-Gig and UPOE switch |
| WS-C3850-48T | C9300-48T | Catalyst 9300 48-port data-only switch |
| WS-C3850-48P | C9300-48P | Catalyst 9300 48-port PoE+ switch |
| WS-C3850-48U | C9300-48U | Catalyst 9300 48-port UPOE switch |
| WS-C3850-12X48U | C9300-48UXM | Cisco Catalyst 9300 48-port 2.5G (12 Multi-Gigabit) switch |
You can find Uplink module types in the below figure:
| Network Module | Description |
| C9300 Network Modules | |
| C9300-NM-4G | This module has four 1 GE SFP module slots. Any combination of standard SFP modules are supported. |
| C9300-NM-4M | This module has four Multi-Gigabit Ethernet module slots. |
| C9300-NM-2Q | This module has two 40 GE QSFP+ module slots. |
| C9300-NM-8X | This module has eight 10 GE SFP+ module slots. |
| C9300-NM-2Y | This module has two 25 GE SFP28 module slots. |
| C9300-NM-BLANK | This is a blank module. |
| C9300X Network Modules | |
| C9300X-NM-2C | This module has two 40 GE/100 GE slots with a QSFP+ connector in each slot. |
| C9300X-NM-8M | This module has four Multi-Gigabit Ethernet module slots. |
| C9300X-NM-8Y | This module has eight 25 GE/10 GE/1 GE slots with an SFP+ port in each slot. |
| C9300X-NM-BLANK | This is a blank module. |
Customers should be noticed, despite of some Catalyst 3K models such as C3850-24XS-S, which Supports SFP+, Cisco Catalyst 9300 switches do not support SFP+ downlinks. This feature on Catalyst 9K Switches is available from Catalyst 9500 series switches.
| 3650 PIDs | 9300 PID | Short Description |
| WS-C3850-24XS-S | C9300-24S | 24-Port GbE SFP With Modular Uplink |
Customers must be noted that all Cisco Catalyst devices will operate with their minimum switching capabilities after shipment and all products need online Cisco smart licensing or offline PLR licensing in order to activate full functionalities. Also, for enabling Cisco SD-Access features on Cisco Catalyst 9000 family, Cisco DNA licenses subscription purchasing would be necessary.
