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SMC Networks SMC6624M manual Unusual Network Activity, General Problems, 11-5

Models: SMC6624M

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Troubleshooting

Unusual Network Activity

Unusual Network Activity

Network activity that exceeds accepted norms may indicate a hardware problem with one or more of the network components, possibly including the switch. Unusual network activity is usually indicated by the LEDs on the front of the switch or measured with the switch console interface or with a network management tool such as EliteView. Refer to the Installation Guide you received with the switch for information on using LEDs to identify unusual network activity.

A topology loop can also cause excessive network activity. The event log “FFI” messages can be indicative of this type of problem.

General Problems

The network runs slow; processes fail; users cannot access servers or

other devices. Broadcast storms may be occurring in the network. These may be due to redundant links between nodes.

•If you are configuring a port trunk, finish configuring the ports in the trunk before connecting the related cables. Otherwise you may inad- vertently create a number of redundant links (i.e. topology loops) that will cause broadcast storms.

•Turn on Spanning Tree Protocol to block redundant links (i.e. topol- ogy loops)

•Check for FFI messages in the Event Log.

Duplicate IP Addresses. This is indicated by this Event Log message:

ip: Invalid ARP source: IP address on IP address

where: both instances of IP address are the same address, indicating the switch’s IP address has been duplicated somewhere on the network.

Duplicate IP Addresses in a DHCP Network. If you use a DHCP server to assign IP addresses in your network and you find a device with a valid IP address that does not appear to communicate properly with the server or other devices, a duplicate IP address may have been issued by the server. This can occur if a client has not released a DHCP-assigned IP address after the intended expiration time and the server “leases” the address to another device. This can also happen, for example, if the server is first configured to issue IP addresses with an unlimited duration, then is subsequently configured to issue

Troubleshooting

11-5

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SMC Networks SMC6624M Unusual Network Activity, General Problems, Ip Invalid ARP source IP address on IP address, 11-5
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SMC6624M specifications

SMC Networks SMC6624M is a robust and versatile managed switch designed to meet the needs of enterprises seeking reliable network solutions. This device features 24 Gigabit Ethernet ports that allow for high-speed data transfer, making it ideal for environments that demand high bandwidth. The SMC6624M is particularly suited for small to medium-sized businesses that require a powerful network backbone to support various applications, including voice, video, and data transmission.

One of the standout features of the SMC6624M is its Layer 2 and Layer 3 switching capabilities, enhancing the flexibility and efficiency of network management. The switch supports VLANs (Virtual Local Area Networks), which allow administrators to segment network traffic for improved security and performance. This capability is essential for organizations looking to optimize their network resources and apply policies that enhance security.

The SMC6624M also integrates advanced Quality of Service (QoS) features, enabling the prioritization of network traffic. This is particularly useful for applications such as VoIP and video conferencing, where maintaining low latency and jitter is crucial for ensuring a seamless user experience. Users can define traffic classes and manage bandwidth allocation, which helps in maintaining the quality of critical applications even during peak usage times.

In terms of connectivity and performance, the SMC6624M includes 4 Gigabit SFP ports, allowing for fiber optic connections to extend network reach and provide flexibility in deployment. The ability to take advantage of high-speed fiber connections means businesses can scale their networks as needed without significant infrastructure changes.

Management options for the SMC6624M are comprehensive. It supports SNMP (Simple Network Management Protocol) for monitoring and managing network performance effectively. Additionally, the switch can be configured using a web-based interface, command-line interface (CLI), or through SNMP, providing flexibility to network administrators with different preferences and expertise.

Furthermore, the SMC6624M is built with a fanless design, which ensures quiet operation and is energy efficient. Its compact form factor and sturdy build make it suitable for installation in various environments, including data centers and office settings.

Overall, the SMC Networks SMC6624M stands out for its combination of speed, flexibility, and management features, making it an excellent choice for businesses looking to enhance their network infrastructure. With a focus on reliability and performance, this managed switch promises to deliver the capabilities that today's modern networks demand.