Stateful IPv6 Default Route

beers

beers

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Staff member
Probably one for @Geoff or @voyagerfan99

I set up some stateful IPv6 action in order to mimic traditional IPv4 deployments. I am receiving the appropriate subnet address on a client but can't find the setting in order to delegate a default v6 route. Traffic passes successfully out to the Internet if I manually add a ::0/0 toward the gateway address within Windows to the ::1 in the same /112 subnet on the client, however I'm not sure how to do either a ICMPv6 route advertisement or DHCPv6 option for this default route.

Currently am just using an edgerouter with a single untagged vlan subnet behind it on eth7. I was hoping adding 0::0/0 as an advert prefix would work but no dice.

[edit interfaces ethernet eth7]
beers@WAN-RTR# show
address 10.1.1.1/24
address 2001:xxxx:xxxx:1::1/112
description "CORE-SW 48"
duplex auto
ipv6 {
router-advert {
default-lifetime 3600
prefix 0::0/0 {
}
}
}
speed auto
traffic-policy {
out wan-down
}


dhcpv6-server {
preference 10
shared-network-name LAN {
name-server 2001:470:20::2
subnet 2001:xxxx:xxxx:1::/112 {
address-range {
start 2001:xxxx:xxxx:1::1000 {
stop 2001:xxxx:xxxx:1::1999
}
}
name-server 2001:470:20::2
}
}
}



Any halp? :D
 
OP = Beers
Beers does not know answer
CF Implodes.

Wish I could help, but my IPv6 knowledge is a bit lacking. We are starting to deploy it campus wide, however we are in the early stages and I haven't become knowledgeable in troubleshooting it yet. My course knowledge on IPv6 from years ago has been mostly forgotten. ;)
 
That sounds interesting, most places I've been avoid v6 like the plague so I've never seen it actually deployed in a professional environment.

Thanks for taking a look though :D

This command seems to delegate a default into the client table, which sounds really effing obvious now that I'm not super sleepy :p

[edit interfaces ethernet eth7 ipv6]
beers@WAN-RTR# set router-advert send-advert true

Then on the client:
C:\Users\beers>route print -6 | findstr ::/0
3 266 ::/0 2001:xxxx:xxxx:1::1

C:\Users\beers>ping 2001:470:20::2
Pinging 2001:470:20::2 with 32 bytes of data:
Reply from 2001:470:20::2: time=26ms
 
beers said:
That sounds interesting, most places I've been avoid v6 like the plague so I've never seen it actually deployed in a professional environment.

Thanks for taking a look though :D
Click to expand...
Our DNS admin has been pushing IPv6 for many years, and is the driving force behind utilizing dual-stack on our new wireless infrastructure being installed this summer. All new equipment we buy must support dual-stack, and we have been making great progress at it so far. We talked to many vendors about IPv6, but of course most don't have much experience, and can't provide many customer installations where it's widely implemented. Guess we'll be one of the first ;)
 
Wouldn't you just set a default router advertisement on the routers interface you're using? Like ipv6 nd router-preference high or whatever the equivalent non-cisco command for the router you're using?
 
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