3.Troubleshooting Functional Failures in Operation

No.

Troubleshooting Steps and Command

 

Action

 

 

 

 

5

Execute the show vrrpstatus command

• If "Virtual router <VRID> of <Interface Name> received VRRP packet for

 

with "statistics" parameter specified to check

 

which the advertisement interval is different than the one configured for local

 

the receiving status of ADVERTISEMENT

 

virtual router." is registered in the type log and "<Number of packets> with bad

 

packets.

 

advertisement interval" of statistics is incremented, confirm that set values of

 

 

 

 

the ADVERTISEMENT packet sending interval and the settings of the VRRP

 

 

 

 

operation mode between this system and the remote system are same.

 

 

 

• If "Virtual router <VRID> of <Interface Name> received VRRP packet that

 

 

 

 

does not pass the authentication check." is registered in the type log and

 

 

 

 

"<Number of packets> with authentication failed" of statistics is incremented,

 

 

 

 

confirm that password settings match between this system and the remote

 

 

 

 

system.

 

 

 

• If "Virtual router <VRID> of <Interface Name> received VRRP packet with IP

 

 

 

 

HopLimit not equal to 255." is registered in the type log and "<Number of

 

 

 

 

packets> with bad ipv6 hoplimit" of statistics is incremented, confirm that there

 

 

 

 

is no other router between this system and the remote system.

 

 

 

• If "Virtual router <VRID> of <Interface Name> received VRRP packet for

 

 

 

 

which the address list does not match the locally configured list for the virtual

 

 

 

 

router." is registered in the type log and "<Number of packets> with bad ipv6

 

 

 

 

address list" of statistics in incremented, confirm that the settings of the virtual

 

 

 

 

IP address and VRRP operation mode are same.

 

 

 

• If "Virtual router <VRID> of <Interface Name> received VRRP packet that

 

 

 

 

does not pass the authentication check." is registered in the type log and

 

 

 

 

"<Number of packets> with bad authentication type" of statistics is

 

 

 

 

incremented, check to see if the authentication password has been set on this

 

 

 

 

system and the remote system.

 

 

 

• If "Virtual router <VRID> of <Interface Name> received VRRP packet that

 

 

 

 

length less than the length of the VRRP header." is registered in the type log and

 

 

 

 

"<Number of packets> with packet length error" of statistics is incremented,

 

 

 

 

confirm that settings of the VRRP operation mode between this system and the

 

 

 

 

remote system are same.

 

 

 

• When "VRRP packet received with unsupported version number." is registered

 

 

 

 

in the type log and "<Number of packets> with invalid type" of statics is

 

 

 

 

incremented, confirm that settings of the VRRP operation mode between this

 

 

 

 

system and the remote system are same.

 

 

 

 

 

 

 

If the ADVERTISEMENT packet is normally received, check the remote system.

 

 

 

Go to No. 6 if the ADVERTISEMENT packet is not received.

 

 

 

6

Check the statistical information of the

If "Input rate" and "Output rate" are excessive on the physical port to which the

 

physical port to which the remote system

remote system is connected and the line traffic is high or the CPU usage checked

 

constituting the same virtual router is

by the show cpu command is high, take the following actions:

 

connected using the show interfaces

• If the line loops, review the use of STP or physical network configuration to

 

command.

 

eliminate the loop.

 

Also, check the CPU usage using the show

•

Execute configuration command vrrp timers advertise to set up

 

cpu command.

 

rather long sending intervals for sending the ADVERTISEMENT packets.

 

 

 

•

Execute configuration command vrrp preempt delay to set the automatic

 

 

 

 

switch back suppressing time.

 

 

 

Go to No. 7 if the traffic of the physical port is low.

 

 

 

7

Confirm that discarding ADVERTISEMENT

If such filtering setting exists, change the filtering setting so that the

 

packets is not set in the filter setting.

ADVERTISEMENT packets are not discarded.

 

 

 

 

 

 

 

If this is not the case, check for the operation of the remote system constituting the

 

 

 

same virtual router.

 

 

 

8

If a failure monitoring interface has been set

If another virtual router is defined on the interface on which a failure monitoring

 

up, check for its status.

interface is set up, confirm that the failure monitoring interface of that virtual

 

 

 

router is not the interface of this virtual router. Otherwise, delete the setting of

 

 

 

either failure interface.

 

 

 

 

 

 

 

Go to No. 9 if the failure monitoring interface described above is not set up.

 

 

 

 

 

108

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NEC IP8800/S6600, IP8800/S3600, IP8800/S2400, IP8800/S6700, IP8800/S6300 manual 108
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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.
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