ipv6 autoconfig

[anand kumar]

                   Hi guys,

I am new to ipv6 deployment, can i get the ipv6 autoconfig on the different ports of the same switch connected with windows clients..

interface FastEthernet0/0

no ip address

duplex auto

speed auto

ipv6 address autoconfig

I am able to get the below ipv6 addresses on the switch,

Blue#sh ipv6 int bri

FastEthernet0/0            [up/up]

    FE80::CE00:1BFF:FEBC:0

    FC00:12::CE00:1BFF:FEBC:0

Thanks

Kumar

[Seb Rupik]

Hi Kumar,

I'd suggest you start be creating a VLAN and then putting each of the switchports connecting to your windows on that VLAN as an access port. If your firmware allows it you can then introduce specific IPv6 options by creating an SVI for that VLAN.

At the very least with all of the switchports in the correct VLAN (at the moment yours are all in VLAN 1) all connected clients will have a link-local address (FE80::) . Your clients should be able to connect to eachothers link-local address.

Do you have any plans for global IPv6 addresses?

cheers,

Seb.

[James Leinweber]

Client autoconfiguration in IPv6 is controlled by flags in the router advertisements.  Where is the router, and how is it configured?

-- Jim Leinweber, WI State Lab of Hygiene

[Julio Carvajal]

Hello Anand,

Not sure I get it but do you mean con u use the L2 ports that will connect to windows PCs so the PCs can get their IPv6 addresses via Auto-config,

If that's the question the answer is yes, all u need to do is to have a L3 device sending router advertisements so each device on the LAN can hear that and update it's NIC,

Regards,

Remember to rate all of the helpful posts.

For this community that's as important as a thanks.

[anand kumar]

HI Carvaja,

you are correct, if so how can the vista pc enabled for getting the ipv6 's ip i.e on global unicast address(gua)

(in the topology of L3Swh->>L2 Swh-->>PC)

L3 switch-ASR-9k

------------------------------

interface Vlan-interface200

ipv6 address 2300:B400::9/126

L2 switch-H3C-5500

------------------------------

interface Vlan-interface200

ipv6 address 2300:B400::A/126

ipv6 address auto

ip address 183.x.x.x 255.255.255.252

#

interface Vlan-interface201

ipv6 address auto

#

[H3C-GigabitEthernet1/0/22]di th( downlink to the user end pc)#

interface GigabitEthernet1/0/22

port link-mode bridge

port access vlan 201

ipv6 nd detection trust

ipv6 nd snooping max-learning-num 4

#

return

[H3C-GigabitEthernet1/0/22]di cu int gi 1/0/28(up link to l3 switch)

#

interface GigabitEthernet1/0/28

port link-mode bridge

port access vlan 200

speed 1000

duplex full

#

return

[H3C-GigabitEthernet1/0/22]di cu | i route

ip route-static 0.0.0.0 0.0.0.0 183.82.14.81

ipv6 route-static :: 0 2300:B400::9

#

thanks

Kumar

[Seb Rupik]

Hi Kumar,

The interface to the end PC gi1/0/22 is on the wrong VLAN, you want to set that to 'port access vlan 200' . This will allow the RAs being sent from the ASR-9k coming via gi1/0/28 to reach the PC.

If you want to retain the current SVI setup on your H3C-5500 then you need to provide SVI201 with a global address, the prefix of which can be used by the connecting PCs to form part of their global address. Your current config looks like you think SVI201 will NAT the link-local address to VLAN200, which it won't.

Hope that makes sense.

cheers,

Seb.

[Seb Rupik]

I should have asked; what is your IPv6 network prefix? We can work out ideal SVI addresses from that.

cheers,

Seb.