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March 28th, 2022 01:00
VLT-MAC Mismatch Problem (Dell S5248F-ON TOR Switch)
I have configured VLT on OS10 with following details:
Peer-01
Dist-SW-01# show running-configuration vlt
!
vlt-domain 16
backup destination 172.16.120.3
discovery-interface ethernet1/1/49
peer-routing
primary-priority 1
vlt-mac 00:11:22:33:44:55
Dist-SW-01# show running-configuration interface ethernet 1/1/49
!
interface ethernet1/1/49
description VLTi-01
no shutdown
no switchport
flowcontrol receive off
flowcontrol transmit off
Peer-02:
Dist-SW-02# show running-configuration vlt
!
vlt-domain 16
backup destination 172.16.120.2
discovery-interface ethernet1/1/49
peer-routing
vlt-mac 00:11:22:33:44:55
Dist-SW-02# show running-configuration interface ethernet 1/1/49
!
interface ethernet1/1/49
description VLTi-01
no shutdown
no switchport
flowcontrol receive off
flowcontrol transmit off
But there it showing VLT-MAC mismatch:
Peer-01:
Dist-SW-01# show vlt 16
Domain ID : 16
Unit ID : 2
Role : primary
Version : 2.3
Local System MAC address : 8c:47:be:71:ee:8f
Role priority : 1
VLT MAC address : 00:11:22:33:44:55
IP address : fda5:74c8:b79e:1::2
Delay-Restore timer : 90 seconds
Peer-Routing : Enabled
Peer-Routing-Timeout timer : 0 seconds
VLTi Link Status
port-channel1000 : up
VLT Peer Unit ID System MAC Address Status IP Address Version
----------------------------------------------------------------------------------
1 8c:47:be:71:f8:0f up fda5:74c8:b79e:1::1 2.3
Dist-SW-01# show vlt 16 mismatch
VLT-MAC mismatch:
VLT Unit ID vlt-mac
-------------------------------------
1 00:11:22:33:44:55
* 2
Peer-routing mismatch:
No mismatch
VLAN mismatch:
No mismatch
------SNIPed-------
Dist-SW-01# show spanning-tree virtual-interface
VFP(VirtualFabricPort) of RSTP 1 is Designated Forwarding
Edge port: No (default)
Link type: point-to-point (auto)
Boundary: No, Bpdu-filter: Disable, Bpdu-Guard: Disable, Shutdown-on-Bpdu-Guard-violation: No
Root-Guard: Disable, Loop-Guard: Disable
Bpdus (MRecords) Sent: 654, Received: 480
Interface Designated
Name PortID Prio Cost Sts Cost Bridge ID PortID
-------------------------------------------------------------------------------------------------------------------
VFP(VirtualFabricPort) 0.1 0 1 FWD 0 0 8c47.be71.ee8f 0.1
VLT-LAG-2517(vlt-portid-2517) of RSTP 1 is Disabled Blocking
Edge port: No (default)
Link type: point-to-point (auto)
Boundary: No, Bpdu-filter: Disable, Bpdu-Guard: Disable, Shutdown-on-Bpdu-Guard-violation: No
Root-Guard: Disable, Loop-Guard: Disable
Bpdus (MRecords) Sent: 0, Received: 0
Interface Designated
Name PortID Prio Cost Sts Cost Bridge ID PortID
-------------------------------------------------------------------------------------------------------------------
VLT-LAG-2517(vlt-portid-2517) 128.2517 128 200000000 BLK 0 0 0000.0000.0000 0.0
VLT-LAG-2526(vlt-portid-2526) of RSTP 1 is Disabled Blocking
Edge port: No (default)
Link type: point-to-point (auto)
Boundary: No, Bpdu-filter: Disable, Bpdu-Guard: Disable, Shutdown-on-Bpdu-Guard-violation: No
Root-Guard: Disable, Loop-Guard: Disable
Bpdus (MRecords) Sent: 0, Received: 0
Interface Designated
Name PortID Prio Cost Sts Cost Bridge ID PortID
-------------------------------------------------------------------------------------------------------------------
VLT-LAG-2526(vlt-portid-2526) 128.2526 128 200000000 BLK 0 0 0000.0000.0000 0.0
Peer-02:
Dist-SW-02# show vlt 16
Domain ID : 16
Unit ID : 1
Role : primary
Version : 2.3
Local System MAC address : 8c:47:be:71:f8:0f
Role priority : 32768
VLT MAC address : 00:11:22:33:44:55
IP address : fda5:74c8:b79e:1::1
Delay-Restore timer : 90 seconds
Peer-Routing : Enabled
Peer-Routing-Timeout timer : 0 seconds
VLTi Link Status
port-channel1000 : up
VLT Peer Unit ID System MAC Address Status IP Address Version
----------------------------------------------------------------------------------
2 8c:47:be:71:ee:8f up fda5:74c8:b79e:1::2 2.3
Dist-SW-02# show vlt 16 mismatch
VLT-MAC mismatch:
VLT Unit ID vlt-mac
-------------------------------------
* 1
2 00:11:22:33:44:55
Peer-routing mismatch:
No mismatch
VLAN mismatch:
No mismatch
------SNIPed-------
Dist-SW-02# show spanning-tree virtual-interface
VFP(VirtualFabricPort) of RSTP 1 is Root Forwarding
Edge port: No (default)
Link type: point-to-point (auto)
Boundary: No, Bpdu-filter: Disable, Bpdu-Guard: Disable, Shutdown-on-Bpdu-Guard-violation: No
Root-Guard: Disable, Loop-Guard: Disable
Bpdus (MRecords) Sent: 58, Received: 11118
Interface Designated
Name PortID Prio Cost Sts Cost Bridge ID PortID
-------------------------------------------------------------------------------------------------------------------
VFP(VirtualFabricPort) 0.1 0 1 FWD 0 0 8c47.be71.ee8f 0.1
VLT-LAG-2526(vlt-portid-2526) of RSTP 1 is Disabled Blocking
Edge port: No (default)
Link type: point-to-point (auto)
Boundary: No, Bpdu-filter: Disable, Bpdu-Guard: Disable, Shutdown-on-Bpdu-Guard-violation: No
Root-Guard: Disable, Loop-Guard: Disable
Bpdus (MRecords) Sent: 0, Received: 0
Interface Designated
Name PortID Prio Cost Sts Cost Bridge ID PortID
-------------------------------------------------------------------------------------------------------------------
VLT-LAG-2526(vlt-portid-2526) 128.2526 128 200000000 BLK 0 0 0000.0000.0000 0.0
VLT-LAG-2546(vlt-portid-2546) of RSTP 1 is Disabled Blocking
Edge port: No (default)
Link type: point-to-point (auto)
Boundary: No, Bpdu-filter: Disable, Bpdu-Guard: Disable, Shutdown-on-Bpdu-Guard-violation: No
Root-Guard: Disable, Loop-Guard: Disable
Bpdus (MRecords) Sent: 0, Received: 0
Interface Designated
Name PortID Prio Cost Sts Cost Bridge ID PortID
-------------------------------------------------------------------------------------------------------------------
VLT-LAG-2546(vlt-portid-2546) 128.2546 128 200000000 BLK 0 0 0000.0000.0000 0.0
VLT-LAG-2616(vlt-portid-2616) of RSTP 1 is Disabled Blocking
Edge port: No (default)
Link type: point-to-point (auto)
Boundary: No, Bpdu-filter: Disable, Bpdu-Guard: Disable, Shutdown-on-Bpdu-Guard-violation: No
Root-Guard: Disable, Loop-Guard: Disable
Bpdus (MRecords) Sent: 0, Received: 0
Interface Designated
Name PortID Prio Cost Sts Cost Bridge ID PortID
-------------------------------------------------------------------------------------------------------------------
VLT-LAG-2616(vlt-portid-2616) 128.2616 128 200000000 BLK 0 0 0000.0000.0000 0.0
My doubt is with VLT-LAG ports which is always same as shown above even after completely removing VLT configuration on both peers and re-configuring it. I didn't found any documentation regarding the vlt-portid, so can you guys explain how these vlt ports can be created/removed and what these ports are?
I am stuck with this VLT-MAC mismatch problem since 1 month so please guys help me to figure out the actual problem.
Note: I have updated the x509 certificate on both switches (Dell S5248F-ON TOR Switch).
Thanks in advance!
Regards,
Sunil Shrestha
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DELL-Chris H
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March 28th, 2022 12:00
Sunil,
With both using OS10 it should work. What I would suggest is to look at the KB article here, then follow the steps to see if that resolves the issue, even though intended for a different unit.
Let me know what you see.
https://dell.to/3tNUVjG
imsun02
5 Posts
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March 28th, 2022 20:00
Hello Chris,
Thanks for your response but the page is not accessible to me. It says "This article is permission based. Find another article." Can you share important points from the article which helps me to identify the root cause?
DELL-Joey C
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March 29th, 2022 02:00
Hi @imsun02,
Are you running OS10 on the switch?
Could you check if the port channel is up and running? OS10# show vlt 16 vlt-port-detail
Reference: https://dell.to/3uFFolb
imsun02
5 Posts
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March 29th, 2022 09:00
Hello @DELL-Joey C ,
Yes I am running OS Version: 10.4.3.6.
Here is vlt-port detail for both peers:
Peer-01:
Peer-02:
VLT Port Channels seems to be down, but I have not configured vlt-port-channels yet. I dont know how these ports channels are there. Is it expected behavior to find the vlt-port-channels created automatically?
Regards,
Sunil Shrestha
DELL-Chris H
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March 29th, 2022 13:00
Sunil,
What I would suggest is to upgrade the firmware on the devices, as this likely is due to the OS10 certificate issue described here. That article also describes steps to help resolve as well.
Let me know how it goes.
imsun02
5 Posts
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March 29th, 2022 22:00
Hello @DELL-Chris H ,
I have already updated the x.509 Certificate on both peers.
Is it possible to remove the vlt-port-channels which I have shared above?
Regards,
Sunil Shrestha
DELL-Joey C
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March 30th, 2022 01:00
Hi @imsun02,
I don't think you should remove the port channel settings. You may need to review the configuration referring to the reference link in my previous reply, https://dell.to/3uFFolb on your VLT setup on OS10.
imsun02
5 Posts
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March 30th, 2022 04:00
Hello @DELL-Joey C,
I am not getting why those vlt-port-channels exists i.e. (10, 30, 100 on peer-01 and 10, 30 on peer-02) as I didnt find any port-channel configuration on #show running configuration. I am not able to niether create new port-channels nor remove those existing vlt-port-channels.
Regards,
Sunil Shrestha
DELL-Chris H
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March 30th, 2022 07:00
Imsun02,
What I would suggest at this point would be to call in, so that we can analyze the system directly and try to determine the source of the issue.