3. Troubleshooting Functional Failures in Operation

No.

Troubleshooting Steps and Command

Action

 

 

 

11

Execute show vrrpstatus command

If the virtual router is set to "Initial," check the following items:

 

with "detail" parameter specified to confirm

• If the current priority is not set to zero (0), delete the non-operation factors

 

that the virtual router status is not "Initial."

displayed in the "Admin State" column. (For non-operation factors, see

 

 

"Operation Commands.")

 

 

• Execute the show logging command to check the log, and if "The VRRP

 

 

virtual MAC address entry can't be registered at hardware tables" is displayed,

 

 

setting up the hardware MAC address table is failed. Delete the configuration

 

 

for the current virtual router and reconfigure the configuration with a different

 

 

virtual router number, or modify the ID of the VLAN where the virtual router is

 

 

set up, then the virtual router may operate. [IP8800/S3600]

 

 

 

 

 

If the virtual router is not set to "Initial," check the operation of the remote system

 

 

constituting the same virtual router.

 

 

 

3.13.3Communication with VRRP Configuration in IPv6 Network Is Disabled

Isolate the problem according to the failure analysis methods shown in the table below if communication with the VRRP configuration is disabled.

Table 3-62: VRRP Failure Analysis Method

No.

Troubleshooting Steps and Command

Action

 

 

 

1

Check the status of the remote systems and

For the configuration constituting a single virtual router, if one system is master

 

this system constituting a same virtual router

and the other systems are backup, check the following:

 

and confirm that one system is used as a

• If terminals are connected under the virtual router without other routers between

 

master router and other systems are used as

them, confirm that the virtual IP address of the virtual router is configured as a

 

backup routers.

default gateway in the network settings of each terminal.

 

 

• Check for the routing information in devices on the communication paths

 

 

including this system.

 

 

Go to No. 2 if there is no problem in terminal setting and in the route information

 

 

in systems on the communication route.

 

 

 

 

 

Go to No. 3 if the status of a virtual router is not correct.

 

 

 

2

Execute the show vlan command with

• If the physical port is set to "Blocking," the communication has been interrupted

 

"detail" parameter specified to confirm that

temporarily due to the STP topology change or the like. If this is the case, wait

 

the status of the physical port within the

for a while and check again to see if the physical port is set to "Forwarding." If

 

the status of the physical port does not change to "Forwarding" after some time,

 

VLAN where the virtual router is set up is

 

check the configuration and physical network structure.

 

set to "Forwarding."

 

• If the physical port is "down," it is not physically connected. Check to see if

 

 

 

 

connectors and/or cables are connected correctly.

 

 

 

 

 

If the status of the physical port is "Forwarding," check for the target network for

 

 

the high traffic.

 

 

 

3

Confirm that both remote system and this

Go to No. 4 if multiple virtual routers are set to master.

 

system constituting a virtual router are not set

 

 

Go to No. 8 if only one virtual router is set to master.

 

to master.

 

 

 

 

 

4

Check the communication between the

If the routers constituting the virtual router cannot communicate with each other

 

routers constituting the virtual router using

with the actual IPv6 addresses, check the physical network configuration.

 

the ping ipv6 command with the actual

 

 

Go to No. 5, if the communication between routers constituting the virtual router

 

IPv6 addresses.

 

is possible by issuing the ping ipv6 command with the actual IPv6 addresses.

 

 

107

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NEC IP8800/S6300, IP8800/S6600, IP8800/S3600, IP8800/S2400, IP8800/S6700 manual Vrrp Failure Analysis Method, 107
Page 168 Page 170

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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