Huawei S3352P-PWR-EI Switch

Huawei Quidway S3300 series switches are new generation Layer 3 Ethernet switches developed to meet the requirements for reliable access and high-quality transmission of multiple services on the MAN metropolitan area network. Based on the high-performance hardware and Huawei VRP Versatile Routing Platform, the S3300 provides the enhanced selective QinQ function and capability to replicate multicast packets between VLANs at the line speed, and supports carrier-class reliability technologies such as Smart Link (applicable to tree networks) and RRPP (applicable to ring networks), as well as the Ethernet OAM function. Huawei S3300 can be used as access devices in buildings or applied to the access layer and aggregation layer of campus networks. 

Huawei S3352P-PWR-EI Switch features:

• 48*10/100Base-TX ports, 2*10/100/1000Base-T or 100/1000Base-X ports and 2 SFP 1000Base-X
• Power: need to purchase additional power W0PSA5000 or W0PSA2500
• Supports 1:1 Backup power supplies
• Support 802.3af and 802.3at
• POE Switch
• Layer 3 Ethernet Switch
• Software: Enhanced Version

Q: Why S3352P-PWR-EI CPU Usage Is Too High When Many VLANIF Interfaces Are Configured on the S3352P-PWR-EI?

A: Do not configure many VLANIF interfaces on S3352P-PWR-EI due to limitations on specifications and hardware performance. This prevents attacks to the CPU from numerous ARP packets or ARP Miss messages and overhigh CPU usage.

Run the arp-fake expire-time 30 command in the view of each VLANIF interface to configure ARP entries and reduce the CPU usage. Besides, you are advised to load the latest patch.

Q: Does the S3352P-PWR-EI Support Port Mirroring?

A: Yes, the details are as follows:

• A maximum of four observing ports can be configured on an S3300 Switch. Packets from multiple ports can be mirrored to the same observing port. You can mirror incoming packets, outgoing packets, or both to an observing port.  
• S3352P-PWR-EI supports Remote Switched Port Analyzer (RSPAN). That is, the observing port and mirrored port can be located on different switches. This facilitates remote device management.
• S3352P-PWR-EI supports traffic mirroring. A maximum of four observing ports can be configured on an S3300. Flows can be mirrored from multiple ports to the same observing port. Flows to be mirrored are determined by the traffic classification rule.

Q: After a Traffic Policy Is Applied Globally on an S3352P-PWR-EI, the Rate Limit Is Invalid When a Traffic Policy Is Applied to Interface?

A: If more than 128 ACL rules are configured, a traffic policy must be applied to the interface, VLAN, and globally in sequence. To update ACL rules, delete all traffic policies from the interface, VLAN, and system, and reconfigure traffic policies on the interface, in the VLAN, and globally in sequence.