The RTL8328M/RTL8328S is a highly integrated Layer 2/Layer 4 management switch that offers 24-port Fast Ethernet MAC, 5-port Gigabit Ethernet MAC, 16-port Fast Ethernet PHY, and embedded 400MHz MIPS-4KEc processor. The RTL8328M/RTL8328S also provides three SerDes interface channels to connect to external PHY or fiber transceivers.
The Memory interface of the RTL8328M/RTL8328S supports SDR/DDR SDRAM and SPI Flash.
The embedded 400MHz MIPS-4KEc CPU supports 8-bit 256M-Byte DDR SDRAM, 16-bit data bus 256M-Byte DDR SDRAM, 16-bit data bus 256M-Byte SDR SDRAM (max), and 32M-Byte serial I/O, dual I/O, quad I/O SPI Flash (max).
There are 16K entries in the 4-way hash L2 table for MAC address learning and searching. The RTL8328M/RTL8328S supports two hash algorithms, and has a 64-entry CAM. An independent Multicast table supports Layer 2 and IP Multicast functions:
· RTL8328S supports 512-entry Multicast table
· RTL8328M supports 1K-entry Multicast table
The RTL8328M/RTL8328S has a 4K-entry VLAN table for 802.1Q port-based, protocol-and-port-based, 802.1Q-based, IP-subnet-based, and ACL rules-based VLAN operation to separate logical connectivity from physical connectivity. Support is provided for IVL (Independent VLAN Learning), SVL (Shared VLAN Learning), and IVL/SVL (Both Independent and Shared VLAN Learning) for flexible network topology architecture. The RTL8328M/RTL8328S also offers a flexible Q-in-Q function.
The ACL (Access Control List) function provides features such as parsing various protocol packet types and performing configurable actions, e.g., Permit/Drop, Redirect, and traffic policing.
· RTL8328S supports 512-entry ACL and 512 flow counters
· RTL8328M supports 2K-entry ACL and 1K flow counters
The RTL8328M/RTL8328S supports per-port ingress/egress bandwidth control and per-queue egress bandwidth control. It has 8 physical queues in each port. The RTL8328M/RTL8328S provides three types of packet scheduling, including SP (Strict Priority), WFQ (Weighted Fair Queuing), and WRR (Weighted Round Robin). Each port and each queue provide a rate limit function.
Port-based 802.1X and MAC-based 802.1X authentication prevent unauthorized users from accessing internal servers. The RTL8328M/RTL8328S supports port isolation to enhance port security. The RTL8328M/RTL8328S also supports a 4-set port mirror configuration to mirror ingress and egress traffic. For network management purposes, complete MIB counter support reflects the switch status in real time. Support is provided for link aggregation to increase link redundancy, and increase linear bandwidth.
The RTL8328M/RTL8328S adopts advanced technologies such as IEEE 802.3az Energy Efficient Ethernet (EEE), Realtek Cable Tester (RTCT), Unidirectional Link Detection (UDLD), Attack Prevention, and MAC Address Learning Constraints.