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April 24th, 2017 03:00
Force10 MXL VLT with MSTP
Hello, can somebody please clarify situation with F10 MXL switches and MSTP configuration in VLT mode on them.
Didn't find clear description about situation when whole network configured in MSTP and single pair of Force10 (non ToR switches) are converting from STACK to VLT.
Major problem that we have several mstp instance and this pair of switches connecting to several of them. During implementation, suddenly we got mstp block in ports configured in vlt-peer-lag (Port-channel interfaces), we had to disable one port from each vlt port-channel interfaces to make this port working.
I understand that my description looks unclear, so please refer on topology diagram attached, links marked with red became blocked with MSTP
murmanov
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April 25th, 2017 01:00
Hello, Daniel, looks like the answer was easier than I thought. VLT configuration simply don't support MSTP, but Dell Force10 documentation looks quite strange for me. I didn't find any clear remark about this. At this moment VLT supports only RSTP and PVST. This info looks sad to me, because it makes interoperability and seamless VLT integration to network environment with different equipment impossible.
Apr 24 06:25:14: %STKUNIT0-M:CP %SPANMGR-2-VLT_STP_INCONSISTENT_PROTOCOL: Spanning tree Protocol is MSTP. Only RSTP and PVST are supported. : VLT Inconsistent STP Protocol
murmanov
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April 24th, 2017 08:00
Hello, Daniel,
We're using most recent version of the switches - 9.11 and vlt configuration were equal, at this moment ports on second switch are in admin down state:
mia-ch01-switch01#sh vlt detail
Local LAG Id Peer LAG Id Local Status Peer Status Active VLANs
------------ ----------- ------------ ----------- -------------
1 1 UP DOWN 120-121, 172, 1725, 1727
9 9 UP DOWN 99, 1727
mia-ch01-switch01#sh vlt brief
VLT Domain Brief
------------------
Domain ID: 1
Role: Primary
Role Priority: 4096
ICL Link Status: Up
HeartBeat Status: Up
VLT Peer Status: Up
Local Unit Id: 0
Version: 6(7)
Local System MAC address: d0:67:e5:bc:7e:03
Remote System MAC address: d0:67:e5:ca:50:30
Configured System MAC address: 02:00:00:12:34:56
Remote system version: 6(7)
Delay-Restore timer: 90 seconds
Delay-Restore Abort Threshold: 60 seconds
Peer-Routing : Disabled
Peer-Routing-Timeout timer: 0 seconds
Multicast peer-routing timeout: 150 seconds
mia-ch01-switch01#sh ver | grep Software
Dell Real Time Operating System Software
Dell Application Software Version: 9.11(0.0)
mia-ch01-switch02#sh vlt detail
Local LAG Id Peer LAG Id Local Status Peer Status Active VLANs
------------ ----------- ------------ ----------- -------------
1 1 DOWN UP 120-121, 172, 1725, 1727
9 9 DOWN UP 99, 1727
mia-ch01-switch02#sh vlt brief
VLT Domain Brief
------------------
Domain ID: 1
Role: Secondary
Role Priority: 8192
ICL Link Status: Up
HeartBeat Status: Up
VLT Peer Status: Up
Local Unit Id: 1
Version: 6(7)
Local System MAC address: d0:67:e5:ca:50:30
Remote System MAC address: d0:67:e5:bc:7e:03
Configured System MAC address: 02:00:00:12:34:56
Remote system version: 6(7)
Delay-Restore timer: 90 seconds
Delay-Restore Abort Threshold: 60 seconds
Peer-Routing : Disabled
Peer-Routing-Timeout timer: 0 seconds
Multicast peer-routing timeout: 150 seconds
mia-ch01-switch02#sh ver | grep Software
Dell Real Time Operating System Software
Dell Application Software Version: 9.11(0.0)