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Configuration Guide - IP Service

CloudEngine 12800 and 12800E V200R005C00

This document describes the configurations of IP Service, including IP address, ARP, DHCP, DNS, IP performance optimization, IPv6, DHCPv6, and IPv6 DNS.
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Licensing Requirements and Limitations for IPv6

Licensing Requirements and Limitations for IPv6

Involved Network Elements

Other network elements are not required.

Licensing Requirements

The IPv6 function is controlled by a license. By default, this function is disabled on a new device. To use the IPv6 function, apply for and purchase the license from the device supplier.

Version Requirements

Table 7-4 Products and minimum version supporting IPv6

Product

Minimum Version Required

CE12804/CE12808/CE12812

V100R002C00

CE12816

V100R003C00

CE12804S/CE12808S

V100R005C00

CE12800E

V200R002C50

Feature Limitations

When deploying IPv6 on the switch, pay attention to the following:
  • Devices do not support Layer 3 forwarding of IPv6 packets in which the IP header contains the option field.
  • Each interface can be configured with only one link-local address. To prevent link-local address conflict, automatically generated link-local addresses are recommended.

  • Manually configured link-local addresses have higher priority than automatically generated ones. Manually configured addresses can overwrite automatically generated ones, but automatically generated addresses cannot overwrite manually configured ones. If manually configured addresses are deleted, the overwritten automatically generated ones take effect.

  • When both static PMTU and dynamic PMTU are configured, only static PMTU takes effect. Static PMTU entries never age.

  • The interface MTU, IPv6 interface MTU, and PMTU are valid only for the packets generated on the device, not for packets forwarded by the host.

  • A switch can receive ICMPv6 error packets that are sent from other devices and learns the path MTU according to the received ICMPv6 error packets.

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Updated: 2019-04-18

Document ID: EDOC1100039535

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