4.Troubleshooting Communication Failures Due to Resource Shortage [IP8800/S6700] [IP8800/S6600] [IP8800/S6300]

4.1MAC Address Table Resource Shortage

4.1.1Checking Resource Usage of MAC Address Table

This system outputs operation log messages when the MAC address table usage reaches 80% and 100% of the accommodating condition. The operation log message output is shown in the table below.

Table 4-1: Operation Log Message for Checking Resource Usage

No.

Trigger

Log Message

 

 

 

1

When MAC address table usage

MAC address table entries was beyond 80 percent of capacity.

 

reaches 80%

 

 

 

 

2

When MAC address table usage

MAC address table entries exceeded capacity.

 

reaches 100%

 

 

 

 

Communication is not immediately affected when usage reaches 80%. However, if usage of MAC address table continuously increases, the limit accommodating condition may be reached and resource shortage resulting in disabled MAC address learning may arise. Check the set value and accommodation value in advance so that the limit of the accommodating condition will not be exceeded.

The MAC address table usage can be checked using the show system command (for details, see the manual "Operation Commands").

4.1.2Action to Be Taken When MAC Address Table Resource Shortage Occurs

When usage of MAC address table reaches the limit of the accommodating condition, the corresponding log message is output at the timing listed in the table below.

Table 4-2: Operation Log Message for Checking Resource Use Status

No.

Trigger

Log Message

 

 

 

1

MAC address learning

MAC address table entries exceeded capacity.

 

ARP/NDP learning

 

2

Static ARP/NDP registration

MAC address table entries exceeded capacity.

3

Static MAC address registration

The static MAC address entry can't be registered at MAC address

 

 

table. ( VLAN <ID>,mac <MAC> )*

4

Setting MAC address learning

The "no mac-address-table learning" entry can't be registered

 

suppression function

at MAC address table. ( VLAN <ID> )*

5

IEEE802.1X authentication

The 802.1X Supplicant MAC address can't be registered at

 

(port authentication, VLAN

hardware tables.*

 

authentication (static))

Note: This log is displayed when the show dot1x logging command is executed.

6

Ring Protocol enabled

AXRP <ring id> : The MAC address entry can't be registered at

 

Additional Ring Protocol

hardware tables.

 

registration

 

7

IGMP Snooping registration

IGMP snooping: The number of the IGMP snooping entry exceeded

 

 

the capacity of this system.

8

MLD Snooping registration

MLD snooping: The number of the MLD snooping entry exceeded the

 

 

capacity of this system.

130

Page 191 Page 193
Page 192
Image 192
NEC IP8800/S2400 MAC Address Table Resource Shortage, Checking Resource Usage of MAC Address Table, Trigger Log Message
Page 191 Page 193

IP8800/S6700, IP8800/S3600, IP8800/S6600, IP8800/S6300, IP8800/S2400 specifications

The NEC IP8800 series comprises a range of advanced networking solutions designed for various applications ranging from enterprise networking to service provider environments. This series includes models such as the IP8800/S2400, IP8800/S3600, IP8800/S6300, IP8800/S6600, and IP8800/S6700, each with its unique set of features and capabilities aimed at delivering robust performance, security, and scalability.

The IP8800/S2400 is an entry-level switch tailored for small to medium enterprises. It features a compact design and high port density, making it ideal for network edge applications. The model supports both Layer 2 and Layer 3 switching capabilities, enabling efficient traffic management. With its robust security features, including access control lists and support for VLANs, the IP8800/S2400 ensures secure connectivity.

Moving to the IP8800/S3600, this switch is designed for data center environments and offers high throughput with advanced routing capabilities. It is equipped with high-capacity 10G and 40G Ethernet ports, facilitating faster data transfer rates. The S3600 supports various protocols such as MPLS and Segment Routing, enhancing its ability to manage complex network architectures. Its energy-efficient design also helps reduce operational costs.

The IP8800/S6300 is tailored for high-performance networking scenarios, featuring a flexible architecture that supports both traditional and cloud-based services. With extensive QoS capabilities, the S6300 optimizes traffic flow and manages bandwidth efficiently, ensuring high-quality service delivery. Its virtualization support allows for easier integration into modern, software-defined networking environments.

The IP8800/S6600 provides a comprehensive solution for service providers and large enterprises, boasting high scalability and modularity. This model supports advanced features such as network slicing and the ability to handle high-density 100G interfaces. Its robust management tools, including centralized control and automation capabilities, simplify network operations significantly.

Finally, the IP8800/S6700 represents the pinnacle of the series, designed for mission-critical applications requiring the utmost reliability and performance. It supports advanced analytics, AI-driven insights, and comprehensive telemetry, enabling proactive network management. With high availability features and extensive redundancy options, the S6700 ensures continuous operation, making it ideal for core network functions.

In summary, the NEC IP8800 series offers a versatile range of switches that combine advanced technologies, high performance, and robust security features, catering to various networking needs across different industries. Each model is designed to provide not only superior connectivity but also the flexibility and scalability required in today’s fast-paced digital landscape.
Top Page Image Contents