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Vahur
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Joined: Sun Oct 20, 2019 9:44 pm

VLAN setup and loop in it

Sun Jun 07, 2020 1:34 pm

Hi,

I'm having trouble setting up VLAN-s in my network. For router I use RB4011iGS+RM (6.44.6) and Ubiquiti US-8-60W for switch.

In RB4011 I have created VLAN interfaces to "Switch_bonding" interface what is connected to Ubiquiti switch where main devices are connected through access ports and WiFi AP with trunk port. I need some devices still to be connected directly to RB4011 with access port. For them I have created bridge and added VLAN and port into it. VLAN-s what are only connected to trunk port in RB4011 have DHCP server on VLAN interface, these two VLAN's what are also on access ports on router have DHCP server on bridge, because otherwise DHCP didn't work.

Problem is that my log is filled with following: Core_vlan: bridge port received packet with own address as source address (c4:ad:34:d7:d5:45), probably loop


Here's diagram of my network. There are devices missing from access ports behind switch, but I guess they aren't very important also right now. Also VLAN 4 may be ignored, because it's IPTV from my ISP and works like it should.

Image
/interface bonding
add mode=802.3ad name=Switch_bonding slaves=ether1,ether2

/interface bridge
add name=Core_bridge
add name=Guest_bridge
add name=Home_bridge
add name=IPTV_bridge protocol-mode=none
add name=IoT_bridge

/interface vlan
add interface=sfp-sfpplus1 name=IPTV_vlan vlan-id=4
add interface=Switch_bonding name=Core_vlan vlan-id=10
add interface=Switch_bonding name=Home_vlan vlan-id=20
add interface=Switch_bonding name=IoT_vlan vlan-id=30
add interface=Switch_bonding name=Guest_vlan vlan-id=80

/interface bridge port
add bridge=IPTV_bridge interface=IPTV_vlan
add bridge=IPTV_bridge interface=ether9
add bridge=Core_bridge interface=Core_vlan
add bridge=Core_bridge interface=ether5
add bridge=Home_bridge interface=Home_vlan
add bridge=Home_bridge interface=ether7
add bridge=Home_bridge interface=ether8

Here's output of interfaces what have C4:AD:34:D7:D5:45 MAC address.
> /interface print where mac-address=C4:AD:34:D7:D5:45            
Flags: D - dynamic, X - disabled, R - running, S - slave 
 #     NAME                                TYPE       ACTUAL-MTU L2MTU  MAX-L2MTU MAC-ADDRESS      
 0  RS ether1                              ether            1500  1592       9578 C4:AD:34:D7:D5:45
 1  RS ether2                              ether            1500  1592       9578 C4:AD:34:D7:D5:45
 2  RS Core_vlan                           vlan             1500  1588            C4:AD:34:D7:D5:45
 3  R  Guest_vlan                          vlan             1500  1588            C4:AD:34:D7:D5:45
 4  RS Home_vlan                           vlan             1500  1588            C4:AD:34:D7:D5:45
 5  R  IoT_vlan                            vlan             1500  1588            C4:AD:34:D7:D5:45
 6  R  Switch_bonding                      bond             1500  1592            C4:AD:34:D7:D5:45

I also tried VLAN and bridging with following configuration and added DHCP to VLANs. But then devices connected directly to didn't get addresses from DHCP server. And there was packet loss on network.
/interface bridge
add name=Bridge-LAN

/interface vlan
add interface=Bridge-LAN name=VLAN-Core vlan-id=10
add interface=Bridge-LAN name=VLAN-Home vlan-id=20
add interface=Bridge-LAN name=VLAN-IoT vlan-id=30
add interface=Bridge-LAN name=VLAN-Guest vlan-id=80

/interface bridge port
add bridge=Bridge-LAN interface=Bonding-Switch
add bridge=Bridge-LAN interface=ether5 pvid=10
add bridge=Bridge-LAN interface=ether7 pvid=20
add bridge=Bridge-LAN interface=ether8 pvid=20

/interface bridge vlan
add bridge=Bridge-LAN untagged=ether5 tagged=Bridge-LAN,Bonding-Switch vlan-ids=10
add bridge=Bridge-LAN untagged=ether7,ether8 tagged=Bridge-LAN,Bonding-Switch vlan-ids=20
add bridge=Bridge-LAN tagged=Bridge-LAN,Bonding-Switch vlan-ids=30
add bridge=Bridge-LAN tagged=Bridge-LAN,Bonding-Switch vlan-ids=80
 
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anav
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Re: VLAN setup and loop in it

Sun Jun 07, 2020 2:23 pm

Hmm, I am doing something similar with two nic cards in a PC and a switch but with a single vlan.
Not sure how to approach this with a router and switch with multiple vlans. Fascinating config attempt.
Sounds like something in the bonding setup is not quite right.
 
rgroothuis
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Posts: 126
Joined: Tue Sep 06, 2016 12:11 am

Re: VLAN setup and loop in it

Sun Nov 07, 2021 11:17 pm

Did you ever found the solution for this problem regarding the loop message detection error message?

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