[XGS1930] blocks IPv6 RA/ND

MichaelB Posts: 3
edited May 20 in Switch

so I replaced an older layer 2 switch with the XGS1930 (firmware V4.70(ABHS.1), local management) and discovered that my clients do not receive any IPv6 addresses any longer. On my uplink router I actually cannot see any IPv6 client addresses any longer on the switchport which the XGS1930 is connected to. The XGS1930 has basically the default configuration running with an IPv4 management address. What function of the XGS1930 might block IPv6?

  • On the XGS1930, VLAN 1 is untagged on all switchports, VLAN 100 is tagged on all switchports
  • Management VLAN is 1
  • The traffic for the clients which do not have any IPv6 connection use tagged VLAN 100. IPv4 within VLAN 100 works without any problem. IPv6 doesn´t.

All Replies

  • Zyxel_Adam
    Zyxel_Adam Posts: 81  Zyxel Employee
    edited May 21
    Hi @MichaelB,

    Welcome to Zyxel Community!

    Since the default configuration only supports IPv6 is VLAN 1, so you may need to create an interface VLAN 100 for IPv6 use.

    Here is the steps to create an IPv6 interface:
    Create an interface VLAN 100

    After adding it, it will show on the bottom.

    Enable interface VLAN 100

    Configure interface IA type.

    Description of IA type:

    Please also make sure that the DHCP server has an IPv6 pool for VLAN 100 subnet.

  • MichaelB
    MichaelB Posts: 3
    Hello, thank you for your answer. With this settings, the switch itself receives an IPv6 address from the DHCPv6 server. Unfortunately, every client which is connected to the switch in VLAN 100 still doesn´t receive any IPv6 address at all.
  • Zyxel_Adam
    Zyxel_Adam Posts: 81  Zyxel Employee

    Thanks for your reply.
    May I confirm one thing that do you need your DHCPv6 server to send an IPv6 perfix to XGS1930 switch and the switch helps to forward IPv6 address by sending RA to your clients? If so, XGS1930 is not supported this function so far, so we could help you transfer your case to feature request.

    However, the switch which supports your requirement is L3 switch (XS3800/XGS4600).
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