No DHCP on pfSense VLAN with Cisco Smart Switch
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@cannondale well one thing for sure - not a fan of what I have seen of the sg250 cli vs gui ;)
Your table legend clearly shows that P would be for the pvid, yet it doesn't show it in the table. From your table vlan 1 on your port 1 is inactive and not even listed as operational on that port, so how would it work?
Here is what my opinion sofar - something wrong in your switch.. This isn't complicated - native vlan (which is working) comes in untagged, with a trunk port your your other vlans you setup on the trunk would be tagged.
Traffic coming in on an access port in vlan X should go out any other ports in vlan X be tagged or untagged via the settings on the port... So when your client sends a discover broadcast into a access port in vlan 10, it should come out the port that is marked to be tagged vlan 10..
Are you running maybe dhcp snooping/guarding?
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@johnpoz said in No DHCP on pfSense VLAN with Cisco Smart Switch:
Are you running maybe dhcp snooping/guarding?
This is not an option in the GUI:
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@cannondale well I am at a loss.. Other than the inconsistencies about your pvid, and showing vlan 1 inactive on your port 1, but your saying it works.. this is pretty basic stuff.
I have never had any issues setting tagged and untagged vlans on any cisco switch ever worked on, or even any other cheap vlan switch or any other..
Its just tagged or untagged..
But from your sniff if pfsense never sees traffic come in tagged, then no its not going to work.
Maybe someone with a sg250 will chime in on something we are missing..
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Thanks for all your help johnpoz! Not sure where to go from here but will wait for others to hopefully chime in as you suggest.
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@cannondale I would think someone around here would have a sg250 - @stephenw10 and crazy amount of stuff in his lab, or @Derelict also..
I even looked if I could get one off amazon for reasonable price ;) I don't mind having switches to play with on my shelf.. I got netgear, dlink, even crappy tplink that had all kinds of issues with vlan, not being able to remove vlan 1 - but they finally fixed that.. And even a unifi flex mini, etc. But my main switches are sg300, a 28 and 10 port..
With work have used pretty much every enterprise/smb switch under the sun and have never seen such an issue..
Trunk with native untagged vlan and then tagged vlan, device in on port untagged.. Its pretty basic stuff - so missing something stupid.. Does the port 24 work if you just set it back to vlan 1, maybe the port is bad?
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I have created vlan 20 on switchport 22 as another test.
Do I need to add/configure VLAN20 in pfSense in order to run tcpdump?
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@cannondale no you don't need to have it setup in pfsense to see the vlan tag with tcpdump -e
But now your port vlan membership looks better it doesn't have 1UI, still odd that it doesn't show the P for for which vlan is the pvid, even though it lists there at the top of the table in the legend that P would mean PVID.. so those 1U should show up as 1UP
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Great! I'll give that a try.
@johnpoz said in No DHCP on pfSense VLAN with Cisco Smart Switch:
But now your port vlan membership looks better it doesn't have 1UI
I went into the Port to Lan settings for port 1 and found it was set to "Excluded". I changed it to "Untagged" earlier.
@johnpoz said in No DHCP on pfSense VLAN with Cisco Smart Switch:
still odd that it doesn't show the P for for which vlan is the pvid, even though it lists there at the top of the table in the legend that P would mean PVID.. so those 1U should show up as 1UP
Agreed! You would know better than me! Maybe a quirky Cisco thing! :)
I have only had this switch for about two months. I knew going in that Cisco UI's were a bit funky but it had the features that I was looking for! -
@cannondale never been a gui guy with most switches.. Other than the cheap 40$ vlan ones - so not sure how quirky cisco gui is, these sg300s are the first cisco switches have used a gui with.
I don't recall coming across and weirdness in the sg300 gui, even with previous firmwares - I think there was awhile that one specific feature page wouldn't work with firefox.. But don't recall if that went away with update to firefox, or update to firmware.. This firmware is dated, this switch is nearing eol, and its firmware has not been updated in quite some time. At least your sg250 firmware is recent..
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@cannondale Can post the full running-config from the switch and the firewall rule(s) on the VLAN10 interface?
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@marvosa he says he did post the config - but doesn't look full to me at all, maybe he snipped out stuff? Cuz its clearly missing a bunch of info..
Maybe maybe a "sho tech-support" would be good thing to take a look.
As to his rules on his vlan 10 interface, doesn't really matter at this point what those are - if his dhcp is enabled then their would be hidden rules to allow that, and doesn't matter what rules are there when he did his tcpdump -e and didn't see anything with vlan 10 tag.
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@johnpoz said in No DHCP on pfSense VLAN with Cisco Smart Switch:
he says he did post the config - but doesn't look full to me at all, maybe he snipped out stuff? Cuz its clearly missing a bunch of info..
Yeah, I saw that. Agreed, it's clearly missing tons of info... was hoping to take a peek at the "full" config if possible. As mentioned, if a sh run doesn't get us there (and idk why it wouldn't), try attaching a show tech.
@johnpoz said in No DHCP on pfSense VLAN with Cisco Smart Switch:
As to his rules on his vlan 10 interface, doesn't really matter at this point what those are - if his dhcp is enabled then their would be hidden rules to allow that, and doesn't matter what rules are there when he did his tcpdump -e and didn't see anything with vlan 10 tag.
I don't disagree. I'm more curious than anything... considering on occasion... what's been stated doesn't always match up with what's actually been configured.... so putting eyes on it can be helpful.
TBH, if we're not seeing tagged vlan 10 traffic from the PFsense capture, then nothing's leaving the switch (or the capture was taken on the wrong interface). I'd personally do a write erase and re-configure the switch from the CLI. However, still curious to see the full config and the firewall rules regardless ;)
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@marvosa said in No DHCP on pfSense VLAN with Cisco Smart Switch:
write erase and re-configure the switch from the CLI.
It sure couldn't hurt - its not like he has anything fancy already on there - looks like everything is just vlan 1.. So not like he would have to take down his whole network while he redoes some crazy config.
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marvosa, thanks for chiming in. I copied the previously posted from a backup made in the GUI Administration | File Management | File Operations. If there is another way to produce a more complete file, let me know.
VLAN10 firewall rule below:
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@cannondale said in No DHCP on pfSense VLAN with Cisco Smart Switch:
produce a more complete file, let me know.
a show run should give you the whole config..
Or a show tech-support would spit out everything..
So it doesn't page on you, not sure if works on sg250, but works on my sg300 I do a
term datadump
This prevents long outputs from stopping and have to hit key to see more, etc.
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@johnpoz said in No DHCP on pfSense VLAN with Cisco Smart Switch:
a show run should give you the whole config.
Output from show run:
Roth-SG250-50P-1#show run config-file-header Roth-SG250-50P-1 v2.5.9.16 / RCBS3.1_930_871_108 CLI v1.0 file SSD indicator encrypted @ ssd-control-start ssd config ssd file passphrase control unrestricted no ssd file integrity control ssd-control-end cb0a3fdb1f3a1af4e4430033719968c0 ! ! unit-type-control-start unit-type unit 1 network gi uplink none unit-type-control-end ! vlan database vlan 10,20 exit voice vlan state auto-triggered voice vlan oui-table add 0001e3 Siemens_AG_phone________ voice vlan oui-table add 00036b Cisco_phone_____________ voice vlan oui-table add 00096e Avaya___________________ voice vlan oui-table add 000fe2 H3C_Aolynk______________ voice vlan oui-table add 0060b9 Philips_and_NEC_AG_phone voice vlan oui-table add 00d01e Pingtel_phone___________ voice vlan oui-table add 00e075 Polycom/Veritel_phone___ voice vlan oui-table add 00e0bb 3Com_phone______________ no boot host auto-config no boot host auto-update no bonjour enable bonjour interface range vlan 1 hostname Roth-SG250-50P-1 line telnet exec-timeout 30 exit username jer password encrypted $86$5/Jf/f1pY8/95XGv$kPRdzeRMBXmEdsjyTZ1l4+OqCg9fuZ7uKSe5I7LV9IbcgUpUgGQXoGLMEO1AZF52onsZ3HTShH3OYBSXslXbVA== privilege 15 username jer2 password encrypted $86$Jd6VBm9YYE9hsEqS$Wr7/T+o2oqDACWSHr0SNJrmwXG2QQ3MS+4EG1j6BknUM6Z8LMYb1/kokfIc3KefDaW5JkhtnW3+gJTnr3sbDJA== privilege 15 username cisco password encrypted $86$/AkLn2WkB5AHHhIy$e/TgE126IBbIHLLsdMMw6ozjTovM1bR132PxH3lGmJeltzZ4U3ug9F3ZaUl+BclKIcE60h2j7Sn6o7RYksS53g== ip ssh server ip http timeout-policy 0 clock timezone J -4 clock dhcp timezone ip telnet server ! interface vlan 10 name "VL10" no snmp trap link-status ! interface vlan 20 name "VL20" no snmp trap link-status ! interface GigabitEthernet1 switchport mode trunk switchport trunk allowed vlan 1,10,20 ! interface GigabitEthernet22 switchport access vlan 20 ! interface GigabitEthernet24 switchport access vlan 10 ! exit Roth-SG250-50P-1# -
@johnpoz said in No DHCP on pfSense VLAN with Cisco Smart Switch:
Or a show tech-support would spit out everything.
show tech-support output attached as file.
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@cannondale ok this would explain why not working..
Port : gi22 Port Mode: Gvrp Status: disabled Ingress Filtering: true Acceptable Frame Type: admitAll Ingress UnTagged VLAN ( NATIVE ): 1 Port is member in: Vlan Name Egress rule Added by ---- -------------------------------- ----------- ---------------- 20 VL20 Untagged SPort : gi24 Port Mode: Gvrp Status: disabled Ingress Filtering: true Acceptable Frame Type: admitAll Ingress UnTagged VLAN ( NATIVE ): 1 Port is member in: Vlan Name Egress rule Added by ---- -------------------------------- ----------- ---------------- 10 VL10 Untagged SNotice the
Ingress UnTagged VLAN ( NATIVE ): 1This is the PVID.. So your untagged traffic coming into the switch from your device would be on vlan 1, so no it would never go out port 1 tagged for the vlan 10 or 20 on these ports.
And your ports would be egress untagged on 10 and 20 of these ports.. But the answer from pfsense on its lan for dhcp would would be on vlan 1...
You should of been seeing the dhcp from these devices - just on the wrong dhcp server.
Port : gi1 Port Mode: Gvrp Status: disabled Ingress Filtering: true Acceptable Frame Type: admitAll Ingress UnTagged VLAN ( NATIVE ): 1 Port is member in: Vlan Name Egress rule Added by ---- -------------------------------- ----------- ---------------- 1 1 Untagged V 10 VL10 Tagged S 20 VL20 Tagged Sedit: notice one of my ports that I have a device on vlan 6, which is one that is tagged to pfsense, see the native vlan or pvid for that port is set to 6
sg300-28#show interfaces switchport gi18 Added by: D-Default, S-Static, G-GVRP, R-Radius Assigned VLAN, T-Guest VLAN, V-Voice VLAN Port : gi18 Port Mode: Access Gvrp Status: disabled Ingress Filtering: true Acceptable Frame Type: admitAll Ingress UnTagged VLAN ( NATIVE ): 6 Port is member in: Vlan Name Egress rule Added by ---- -------------------------------- ----------- ---------------- 6 W_Guest Untagged SAlso curious why all your ports mode is just blank
Port Mode:
It should be showing trunk or access.. see mine above for gi18, and then on the one that goes to my pfsense
sg300-28#show interfaces switchport gi5 Added by: D-Default, S-Static, G-GVRP, R-Radius Assigned VLAN, T-Guest VLAN, V-Voice VLAN Port : gi5 Port Mode: Trunk Gvrp Status: disabled Ingress Filtering: true Acceptable Frame Type: admitAll Ingress UnTagged VLAN ( NATIVE ): 2 Port is member in: Vlan Name Egress rule Added by ---- -------------------------------- ----------- ---------------- 2 Wlan Untagged S 4 W_PSK Tagged S 6 W_Guest Tagged SSo your port 1 looks ok, other then the missing port mode that is odd. But your ports 22 and 24 should have the native vlan (pvid) set to vlan 10 and 20 etc..
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@johnpoz said in No DHCP on pfSense VLAN with Cisco Smart Switch:
Notice the
Ingress UnTagged VLAN ( NATIVE ): 1
This is the PVIDI do not see where PVID is exposed in the GUI for Access Mode on the membership screen in order to modify.
@johnpoz said in No DHCP on pfSense VLAN with Cisco Smart Switch:
Also curious why all your ports mode is just blank
As marvosa previously mentions, it may be a Cisco firmware thing. The GUI shows "Access" for all ports except port 1, which is "Trunk".
Can the PVID be changed in the CLI?
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@cannondale said in No DHCP on pfSense VLAN with Cisco Smart Switch:
Can the PVID be changed in the CLI?
I don't think so not for a access port.. On my sg300 if I change the access port vlan it auto changes the pvid..
example here is port 28
sg300-28#sho interfaces switchport gi28 Added by: D-Default, S-Static, G-GVRP, R-Radius Assigned VLAN, T-Guest VLAN, V-Voice VLAN Port : gi28 Port Mode: Access Gvrp Status: disabled Ingress Filtering: true Acceptable Frame Type: admitAll Ingress UnTagged VLAN ( NATIVE ): 10 Port is member in: Vlan Name Egress rule Added by ---- -------------------------------- ----------- ---------------- 10 disabled Untagged SIf I then put in say vlan 6.. via the with the little arrows to remove it from 10 and add 6 while picking untagged..
sg300-28#sho interfaces switchport gi28 Added by: D-Default, S-Static, G-GVRP, R-Radius Assigned VLAN, T-Guest VLAN, V-Voice VLAN Port : gi28 Port Mode: Access Gvrp Status: disabled Ingress Filtering: true Acceptable Frame Type: admitAll Ingress UnTagged VLAN ( NATIVE ): 6 Port is member in: Vlan Name Egress rule Added by ---- -------------------------------- ----------- ---------------- 6 W_Guest Untagged SYou could try putting it in vlan 10 or 20 from the cli and see if that works..
example - here is me moving it back to 10
sg300-28#sho interfaces switchport gi28 Added by: D-Default, S-Static, G-GVRP, R-Radius Assigned VLAN, T-Guest VLAN, V-Voice VLAN Port : gi28 Port Mode: Access Gvrp Status: disabled Ingress Filtering: true Acceptable Frame Type: admitAll Ingress UnTagged VLAN ( NATIVE ): 6 Port is member in: Vlan Name Egress rule Added by ---- -------------------------------- ----------- ---------------- 6 W_Guest Untagged S Forbidden VLANS: Vlan Name ---- -------------------------------- Classification rules: sg300-28#conf t sg300-28(config)#int gi28 sg300-28(config-if)#switchport access vlan 10 sg300-28(config-if)#exit sg300-28(config)#exit sg300-28#sho interfaces switchport gi28 Added by: D-Default, S-Static, G-GVRP, R-Radius Assigned VLAN, T-Guest VLAN, V-Voice VLAN Port : gi28 Port Mode: Access Gvrp Status: disabled Ingress Filtering: true Acceptable Frame Type: admitAll Ingress UnTagged VLAN ( NATIVE ): 10 Port is member in: Vlan Name Egress rule Added by ---- -------------------------------- ----------- ---------------- 10 disabled Untagged S Forbidden VLANS: Vlan Name ---- -------------------------------- Classification rules: sg300-28#I don't really like that your gui doesn't show mode, nor the P that it has in its legends that should mark what the pvid is, etc. Maybe you want to roll back in the firmware.. Maybe there is something wrong with this firmware.. But it for sure is not going to work if untagged traffic coming from your device is going on to vlan 1 vs 10..
maybe you could just put 22 or 24 into trunk mode or general mode.. And be able to set the pvid, and just set vlan 10 or 20 to be untagged..
You might want to ask on the cisco forums.. I doubt you have support from cisco ;)
