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NEC IP8800/S2400 manual Procedure to check configuration, Duplicate acquisition by the client

Models: IP8800/S6700 IP8800/S3600 IP8800/S6600 IP8800/S6300 IP8800/S2400

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3. Troubleshooting Functional Failures in Operation

Check the number of remaining prefixes that can be distributed from the IPv6DHCP server using the show ipv6 dhcp server statistics command. For the instructions, see "Configuration Settings." If the distributable number of prefixes

is 0, increase the number of prefixes to be distributed. The prefixes can be distributed up to 1024.

(c)Procedure to check configuration

1.Confirm that IPv6DHCP server functions is enabled.

Execute configuration command show service to confirm that the "IPv6 DHCP" server is enabled. If the underlined part in the following results is not displayed, the "IPv6 DHCP" server is enabled.

[Execution results]

(config)# show service no service ipv6 dhcp

!

(config)#

2.Checking "ipv6 dhcp server" setting.

Execute configuration command show to confirm that the "ipv6 dhcp server" setting presents. If not configured, add the configuration. If the setting presents, confirm that the specified interface supports the network on which clients are connected.

[Execution results]

(config)# show interface vlan 10

ipv6 address 3ffe:1:2:: linklocal ipv6 enable

ipv6 dhcp server Tokyo preference 100

!

(config)#

3.Check the setting of ipv6 dhcp pool/ipv6 local pool/prefix-delegation/prefix-delegation pool.

Execute configuration command show ipv6 dhcp to confirm that the prefix distribution from the "IPv6DHCP" server is configured. If not configured, add the configuration. If this feature is configured, confirm that the value specified in "prefix-delegation/ipv6 local pool," which determine the prefix to be distributed, and presence/absence of "duid" configuration, which determine the target clients for the distribution, and the client DUID value defined in "duid" are correct.

[Execution results]

(config)# show ipv6 dhcp ipv6 dhcp pool Tokyo

prefix-delegation 3ffe:1:2::/48 00:03:00:01:11:22:33:44:55

!

(config)#

(d) Duplicate acquisition by the client

1.Checking binding information

Execute the show ipv6 dhcp binding command with "detail" parameter specified to confirm that only one prefix is distributed for each DUID. An example is as follows.

[Execution results]

>show ipv6 dhcp binding detail Total: 2 prefixes

<Prefix>

<Lease expiration> <Type>

<DUID>

05/04/01 11:29:00

Automatic

3ffe:1234:5678::/48

00:01:00:01:55:55:55:55:00:11:22:33:44:55

Automatic

3ffe:aaaa:1234::/48

05/04/01 11:29:00

00:01:00:01:55:55:55:55:00:11:22:33:44:55

 

>

As displayed in the underlined portion, if the same DUID appears two or more times, it may be a client that is improperly acquiring prefix information. Check each client and confirm the distributed prefixes value.

2.Matching distributed prefixes and clients

If no client is found that is acquiring duplicated prefixes as the results of the show ipv6 dhcp binding

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NEC IP8800/S2400, IP8800/S6600, IP8800/S3600 manual Procedure to check configuration, Duplicate acquisition by the client
Page 136 Page 138

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.