IPv6 Question
-
@johnnybinator said in IPv6 Question:
switchport mode trunk
switchport trunk allowed vlan allHow do you think there is no pvid there? Cisco requires a pvid on a trunk port.. If you try and remove vlan 1, it sets 4095P.. In cisco land if you do not want pvid to be default vlan.. Then you set the native to a dead vlan..
There is some other tricks you can try with setting the port to general mode..
But best practice in ciscoland has always been to set a dead vlan as the pvid on the trunk..
-
@johnpoz this isn’t Cisco. But I get your point. I hadn’t thought of setting native to a dead VLAN. That would solve the problem. I’m going to give it a try. Thanks.
-
@johnnybinator what switch is it exactly? I have worked with many a switches over the years. But mostly cisco for sure - but I would be curious to look at the manual for a switch that drops all untagged on trunk..
-
@johnpoz it’s an fs.com s390024t. It’s 24port copper with 4 sfp+, fabless. I bought it for the silence.
-
@johnnybinator said in IPv6 Question:
s390024t
Well quick look over - sure seems like trunk will have a pvid to me..
Switch(config)#show interface brief ethernet 0/0/1
Can we see that for your interface, this would show the pvid and or utvlan
So unless you did something with ingress filtering like
"ingress acceptable-frame tagged" or something that would remove that.. Trunk ports always have a default pvid.. And do something with untagged. This is normally put onto the default vlan of the switch. -
@johnpoz
Looks like native VLAN is one when you don't specify. I did not know that. I used to do:switchport trunk allowed vlan all and then swithport trunk remove 1 to shut down VLAN 1 as I am not using it at all.
But I stopped doing that in some troubleshooting step I was doing a while back and have not put it back. This problem with a host with a trunk port getting an IPv6 address from VLAN11 persisted through that change. I'm going to create a dead VLAN and set the native VLAN to that and see what happens. I'm pretty confident that will fix this problem.
s3900l.johnnyb.dev-1#show int configuration eth 3/26
Name : To PfSense
Port Admin : Up
Speed-duplex Capabilities : 10Gfull
Nego-Speed-duplex : 10Gfull
Flow Control : Disabled
VLAN Trunking : Disabled
MAC Learning : Enabled
Link-Status Trap : Disabled
Media Type : None
MTU : 9216
Broadcast Threshold : Disabled
Multicast Threshold : Disabled
Unknown Unicast Threshold : Disabled
Broadcast Block : Disabled
Unknown Multicast Block : Disabled
Unknown Unicast Block : Disabled
Ingress Rate Limit : Disabled, 10000000 kbits/second
Egress Rate Limit : Disabled, 10000000 kbits/second
VLAN Mode : Trunk
Vlan Ingress filtering : Disabled
Native VLAN : 1
GVRP Status : Disabled
VLAN : 1(u), 6(t), 7(t), 8(t), 10(t)
11(t), 12(t), 13(t), 14(t), 20(t)
30(t), 40(t), 41(t), 50(t), 60(t)
70(t), 80(t), 82(t), 90(t), 100(t)
110(t), 120(t), 121(t), 122(t), 130(t)
140(t), 150(t), 151(t), 152(t), 160(t)
170(t), 180(t), 190(t), 200(t), 210(t)
300(t), 400(t), 500(t), 600(t), 700(t)
800(t), 900(t), 999(t)
Forbidden VLAN :
QinQ Status : Disabled
QinQ Mode : Normal
QinQ TPID : 8100 (Hex) -
What does eth 3/20 show, where the host was connected?
-
@johnnybinator said in IPv6 Question:
Native VLAN : 1
VLAN : 1(u), 6(t), 7(t), 8(t), 10(t)
11(t), 12(t), 13(t), 14(t), 20(t)So that looks like switch default vlan to me..
Could you please just do the command I asked for on the interface connect to your device your saying is getting IPv6 address from your vlan 11.
Or the above output on the port connected to your devicel. But your command above clearly shows there is an untagged vlan on that port, even though you say your trunked.. And that your trunk had no pvid.
-
I blame Cisco! Using their own terminology for everything....
-
@stephenw10 not sure if I would say that ;) But what I will say is I like this output from cli?
VLAN : 1(u), 6(t), 7(t), 8(t), 10(t)
11(t), 12(t), 13(t), 14(t), 20(t)
30(t), 40(t), 41(t), 50(t), 60(t)
70(t), 80(t), 82(t), 90(t), 100(t)
110(t), 120(t), 121(t), 122(t), 130(t)
140(t), 150(t), 151(t), 152(t), 160(t)
170(t), 180(t), 190(t), 200(t), 210(t)
300(t), 400(t), 500(t), 600(t), 700(t)
800(t), 900(t), 999(t)Or did copy that from some gui and paste.. That is easy way to show what is allowed, that is tagged what is untagged.. But I am thinking that might be copy paste from a gui?
I keep seeing these fs.com switches mentioned all over the place.. I should try and pick up one to play with..
-
@johnpoz s3900l.johnnyb.dev-1#show int config eth 3/20
Name : to NFS Server
Port Admin : Up
Speed-duplex Capabilities : 1000full
Nego-Speed-duplex : Auto
Flow Control : Disabled
VLAN Trunking : Disabled
MAC Learning : Enabled
Link-Status Trap : Disabled
Media Type : None
MTU : 9216
Broadcast Threshold : Disabled
Multicast Threshold : Disabled
Unknown Unicast Threshold : Disabled
Broadcast Block : Disabled
Unknown Multicast Block : Disabled
Unknown Unicast Block : Disabled
Ingress Rate Limit : Disabled, 1000000 kbits/second
Egress Rate Limit : Disabled, 1000000 kbits/second
VLAN Mode : Trunk
Vlan Ingress filtering : Enabled
Native VLAN : 1
GVRP Status : Disabled
VLAN : 1(u), 6(t), 7(t), 8(t), 10(t)
11(t), 12(t), 13(t), 14(t), 20(t)
30(t), 40(t), 41(t), 50(t), 60(t)
70(t), 80(t), 82(t), 90(t), 100(t)
110(t), 120(t), 121(t), 122(t), 130(t)
140(t), 150(t), 151(t), 152(t), 160(t)
170(t), 180(t), 190(t), 200(t), 210(t)
300(t), 400(t), 500(t), 600(t), 700(t)
800(t), 900(t), 999(t)
Forbidden VLAN :
QinQ Status : Disabled
QinQ Mode : Normal
QinQ TPID : 8100 (Hex) -
Hmm, well I wouldn't expect a client on that port to see anything on VLAN11. Even if the client is stripping the tags it would (should) be unable to reply.
Something odd at play here.I guess wait for the results of testing the client connected to pfSense directly.
Steve
-
@stephenw10 Will be later today or tomorrow, I will report back.
-
@johnnybinator So from that config, if untagged traffic when into port 3/20 is would come out 3/26 untagged.
I just find it impossible that would be seen by vlan 11 interface in pfsense..
Now it would be seen by an ix0 if that is what is connected to port 3/26.. But how would ix0.11 see it, why wouldn't ix0.6 or .7 or .10 see it?
-
@johnpoz I agree 100%. A Clue now that you've had me thinking more about the switch than the pfsense appliance: The switch itself is setup to have an IP (v4) on VLAN 11. but the way I added an IPv6 address put it on VLAN 1:
interface vlan 11
ip address 10.200.0.247 255.255.255.0interface vlan 1
ipv6 address xxxx:xxxx:xxxx:xxxx::247/64Perhaps I should put the ipv6 address on VLAN11.
-
Hmm, is that IPv6 address in any of the pfSense interface subnets?
Since pfSense doesn't have an interface on the untagged ix0 NIC I don't expect it to be.
-
@stephenw10 yes, that's the LAN /64. (VLAN11). I changed it so that the IPv6 address is on VLAN 11 instead of VLAN 1. I belive that is going to fix all this crap. Cannot verify until later.
-
@johnnybinator if your switch as an IPv6 on its vlan1 - maybe it handing out address via slaac? Since clearly untagged traffic coming into that port would be on vlan 1.
That seems logical to be honest.. While somehow pfsense seeing untagged traffic on its vlan 11 does not.
-
@johnpoz Yeah. I was thinking the same. Odd thing is, the switch is not providing any IPv6 services. Somehow the pfsense box is doing the RA on VLAN11, but the switch is seeing that on VLAN 1, because I had accidentally put an IPv6 address on VLAN 1.
I put the IPv6 address on the switch via the GUI. It mentions nothing about the VLAN it is assigning the address to. I should have just done it via CLI.
-
I would expect it to be on the switch native VLAN unless you specifically set it otherwise.
I still wouldn't expect it to allow traffic between that and VLAN 11 though.
This is a curious situation you have discovered!
