Hi there

I have two of these switches that I am trying to stack using the 100GB ports and VLT

I have never done this before and it seems that I am able to get it working but when I swich off one switch the whole stack goes down. When I switch off the other switch it does not bring the whole stack down

I am used to stacking with a proper stacking cable like on the old switches but it seems you cannot do that on these switches.

Mw switches are identical when it comes to the configuration and I will put one config here for people to see where I am going wrong 

 

login as: admin
Pre-authentication banner message from server:
| Debian GNU/Linux 9
|
| Dell EMC Networking Operating System (OS10)
End of banner message from server
admin@192.168.50.3's password:
Linux OS10 4.9.210 #1 SMP Debian 4.9.210-1+deb9u1 x86_64

The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.

-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-
-* Dell EMC Network Operating System (OS10) *-
-* *-
-* Copyright (c) 1999-2020 by Dell Inc. All Rights Reserved. *-
-* *-
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%Warning : Default password for admin account should be changed to secure the system
%Warning : Default password for linuxadmin account should be changed to secure the system.
OS10#
OS10#
OS10#
OS10#
OS10#
OS10#
OS10# enable
OS10# show running-configuration
! Version 10.5.2.2
! Last configuration change at Jan 28 09:45:20 2021
!
ip vrf default
!
switch-port-profile 1/1 profile-4
iscsi enable
iscsi target port 860
iscsi target port 3260
interface breakout 1/1/25 map 100g-1x
interface breakout 1/1/26 map 100g-1x
interface breakout 1/1/27 map 10g-4x
interface breakout 1/1/28 map 40g-1x
interface breakout 1/1/29 map 100g-1x
interface breakout 1/1/30 map 100g-1x
system-user linuxadmin password ****
username admin password **** role sysadmin priv-lvl 15
aaa authentication login default local
aaa authentication login console local
!
class-map type application class-iscsi
!
policy-map type application policy-iscsi
!
interface vlan1
no shutdown
ip address 192.168.1.101/24
!
interface vlan50
no shutdown
ip address 192.168.50.3/24
!
interface vlan51
no shutdown
ip address 192.168.51.3/24
!
interface port-channel1
no shutdown
switchport access vlan 50
lacp fallback enable
lacp fallback timeout 20
vlt-port-channel 1
!
interface port-channel2
no shutdown
switchport access vlan 50
lacp fallback enable
lacp fallback timeout 5
vlt-port-channel 2
!
interface port-channel3
no shutdown
switchport access vlan 50
lacp fallback enable
vlt-port-channel 3
!
interface port-channel4
no shutdown
switchport access vlan 50
lacp fallback enable
vlt-port-channel 4
!
interface mgmt1/1/1
no shutdown
ip address dhcp
ipv6 address autoconfig
!
interface ethernet1/1/5
no shutdown
switchport access vlan 50
flowcontrol receive on
!
interface ethernet1/1/6
no shutdown
switchport access vlan 50
flowcontrol receive on
!
interface ethernet1/1/7
no shutdown
switchport access vlan 50
flowcontrol receive on
!
interface ethernet1/1/8
no shutdown
switchport access vlan 50
flowcontrol receive on
!
interface ethernet1/1/9
no shutdown
switchport access vlan 50
flowcontrol receive on
!
interface ethernet1/1/10
no shutdown
switchport access vlan 50
flowcontrol receive on
!
interface ethernet1/1/11
no shutdown
switchport access vlan 50
flowcontrol receive on
!
interface ethernet1/1/12
no shutdown
switchport access vlan 50
flowcontrol receive on
!
interface ethernet1/1/13
no shutdown
switchport access vlan 50
flowcontrol receive on
!
interface ethernet1/1/14
no shutdown
switchport access vlan 50
flowcontrol receive on
!
interface ethernet1/1/15
no shutdown
switchport access vlan 50
flowcontrol receive on
!
interface ethernet1/1/16
no shutdown
switchport access vlan 50
flowcontrol receive on
!
interface ethernet1/1/17
no shutdown
switchport access vlan 50
flowcontrol receive on
!
interface ethernet1/1/18
no shutdown
switchport access vlan 50
flowcontrol receive on
!
interface ethernet1/1/19
no shutdown
switchport access vlan 50
flowcontrol receive on
!
interface ethernet1/1/20
no shutdown
switchport access vlan 50
flowcontrol receive on
!
interface ethernet1/1/21
no shutdown
switchport access vlan 50
flowcontrol receive on
!
interface ethernet1/1/22
no shutdown
switchport access vlan 50
flowcontrol receive on
!
interface ethernet1/1/23
no shutdown
switchport access vlan 50
flowcontrol receive on
!
interface ethernet1/1/24
no shutdown
switchport access vlan 50
flowcontrol receive on
!
interface ethernet1/1/25
no shutdown
switchport access vlan 1
flowcontrol receive on
!
interface ethernet1/1/26
no shutdown
switchport access vlan 1
flowcontrol receive on
!
interface ethernet1/1/27:1
description NexisE4200-1
no shutdown
channel-group 1 mode active
no switchport
flowcontrol receive on
lacp rate fast
!
interface ethernet1/1/27:2
description NexisE4200-2
no shutdown
channel-group 2 mode active
no switchport
flowcontrol receive on
lacp rate fast
!
interface ethernet1/1/27:3
description NexisE4100-1
no shutdown
channel-group 3 mode active
no switchport
flowcontrol receive on
lacp rate fast
!
interface ethernet1/1/27:4
no shutdown
channel-group 4 mode active
no switchport
flowcontrol receive on
lacp rate fast
!
interface ethernet1/1/28
no shutdown
switchport access vlan 1
flowcontrol receive on
!
interface ethernet1/1/29
no shutdown
no switchport
flowcontrol receive on
!
interface ethernet1/1/30
no shutdown
no switchport
flowcontrol receive on
!
interface ethernet1/1/31
no shutdown
switchport access vlan 51
flowcontrol receive on
!
interface ethernet1/1/32
no shutdown
switchport access vlan 51
flowcontrol receive on
!
interface ethernet1/1/33
no shutdown
switchport access vlan 51
flowcontrol receive on
!
interface ethernet1/1/34
no shutdown
switchport access vlan 51
flowcontrol receive on
!
interface ethernet1/1/35
no shutdown
switchport access vlan 51
flowcontrol receive on
!
interface ethernet1/1/36
no shutdown
switchport access vlan 51
flowcontrol receive on
!
interface ethernet1/1/37
no shutdown
switchport access vlan 51
flowcontrol receive on
!
interface ethernet1/1/38
no shutdown
switchport access vlan 51
flowcontrol receive on
!
interface ethernet1/1/39
no shutdown
switchport access vlan 51
flowcontrol receive on
!
interface ethernet1/1/40
no shutdown
switchport access vlan 51
flowcontrol receive on
!
interface ethernet1/1/41
no shutdown
switchport access vlan 51
flowcontrol receive on
!
interface ethernet1/1/42
no shutdown
switchport access vlan 51
flowcontrol receive on
!
interface ethernet1/1/43
no shutdown
switchport access vlan 51
flowcontrol receive on
!
interface ethernet1/1/44
no shutdown
switchport access vlan 51
flowcontrol receive on
!
interface ethernet1/1/45
no shutdown
switchport access vlan 51
flowcontrol receive on
!
interface ethernet1/1/46
no shutdown
switchport access vlan 51
flowcontrol receive on
!
interface ethernet1/1/47
no shutdown
switchport access vlan 51
flowcontrol receive on
!
interface ethernet1/1/48
no shutdown
switchport access vlan 51
flowcontrol receive on
!
interface ethernet1/1/49
no shutdown
switchport access vlan 51
flowcontrol receive on
!
interface ethernet1/1/50
no shutdown
switchport access vlan 51
flowcontrol receive on
!
vlt-domain 1
backup destination 192.168.1.102
discovery-interface ethernet1/1/29-1/1/30
primary-priority 8192
!
snmp-server contact "Contact Support"
!
telemetry
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