04-09-2023
01:45 AM
- last edited on
04-10-2023
02:01 AM
by
rupeshah
Our sysadmin say he see this error on Cisco switch
What is meaning of this error and how I can fix it?
which command run by sysadmin and make this output.
I want run it again.
We have ESXiand on this ESXi run more than 30 VM, and ESXi connected to our Switch
and this is my switch config
Building configuration...
Current configuration : 7112 bytes
!
version 12.2
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname xxx
!
boot-start-marker
boot-end-marker
!
enable secret xxx
!
username xxx privilege 15 secret xxx
no aaa new-model
system mtu routing 1500
ip subnet-zero
!
ip domain-name mfaridi
!
!
crypto pki trustpoint TP-self-signed-3810083840
enrollment selfsigned
subject-name cn=IOS-Self-Signed-Certificate-3810083840
revocation-check none
rsakeypair TP-self-signed-3810083840
!
!
crypto pki certificate chain TP-self-signed-3810083840
certificate self-signed 01
something is here
quit
!
!
!
!
!
spanning-tree mode pvst
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
!
!
interface Port-channel1
description SW-DC-EXSI-1
switchport mode trunk
!
interface GigabitEthernet0/1
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/2
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/3
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/4
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/5
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/6
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/7
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/8
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/9
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/10
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/11
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/12
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/13
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/14
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/15
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/16
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/17
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/18
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/19
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/20
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/21
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/22
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/23
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/24
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/25
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/26
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/27
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/28
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/29
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/30
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/31
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/32
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/33
description ESXI-1-port1
switchport mode trunk
!
interface GigabitEthernet0/34
description ESXI-1-port2
switchport mode trunk
!
interface GigabitEthernet0/35
description ESXI-1-port3
switchport mode trunk
!
interface GigabitEthernet0/36
description ESXI-1-port4
switchport mode trunk
!
interface GigabitEthernet0/37
description ILO EXSI-1 90.202
switchport access vlan 100
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/38
description MIK-CORE-1-port3
switchport mode trunk
!
interface GigabitEthernet0/39
!
interface GigabitEthernet0/40
description mangment_Admin
switchport access vlan 100
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/41
switchport mode trunk
!
interface GigabitEthernet0/42
switchport mode trunk
!
interface GigabitEthernet0/43
switchport mode trunk
!
interface GigabitEthernet0/44
switchport mode trunk
!
interface GigabitEthernet0/45
!
interface GigabitEthernet0/46
!
interface GigabitEthernet0/47
!
interface GigabitEthernet0/48
!
interface Vlan1
no ip address
no ip route-cache
!
interface Vlan100
ip address 192.168.90.10 255.255.255.0
no ip route-cache
!
ip default-gateway 192.168.90.11
ip http server
ip http secure-server
!
control-plane
!
!
line con 0
login local
line vty 0 4
privilege level 15
login local
transport input telnet ssh
line vty 5 15
no login
!
end
In our network we have more than 30 VMs run on ESXi, from last week some of this server is not accessible and I do not have ping of them and can not SSH to them.
We have 2 two subnet in our network
192.168.90.0/24 use for our Linux and Windows servers, these clients get static IP, default gateway is 192.168.90.11
192.168.91.0/24 use for our clients all of them are windows, these clients get IP by DHCP server, our Mikrotik server is DHCP server and default gateway is 192.168.91.11
From last week some of 192.168.90.0/24 can not ping their default gateway,
I do know can this problem happen by these errors our no.
04-11-2023 06:37 PM
which command is run by the sysadmin and makes this output. <<- show logging (command you need to view the logs)
MAC Flap happening because you configured it as a Trunk port so the MAC address or using a different port example your cases 33 and 36
interface GigabitEthernet0/33
description ESXI-1-port1
switchport mode trunk
!
interface GigabitEthernet0/34
description ESXI-1-port2
switchport mode trunk
!
interface GigabitEthernet0/35
description ESXI-1-port3
switchport mode trunk
!
interface GigabitEthernet0/36
description ESXI-1-port4
switchport mode trunk
To avoid this issue, configure LACP trunk between Switch and esxi switch or portgroup.
check the VMAWARE document :
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