If you have to connect VMware server to a Cisco 3750X Stack via Port-Channel consider this:
- In Cisco, the default PVID is 1
- In a Cisco trunk the PVID pass untagged
- VMware virtual switch tag VLAN 1 on a trunk
- Default channel-group is EtherChannel
So if you pass many VLAN (id. 1 included) on a trunk interface this is the simplest way:
!
vlan 4001
name VLAN-TRICK
!
interface Port-channel22
description Etherchannel to VMwareLAB01 * 2Gbps
switchport trunk encapsulation dot1q
switchport trunk native vlan 4001
switchport trunk allowed vlan 1,10,20,30,40,50-60,300
switchport mode trunk
switchport nonegotiate
!
interface GigabitEthernet1/0/20
description Eth0 - VMwareLAB01
switchport trunk encapsulation dot1q
switchport trunk native vlan 4001
switchport trunk allowed vlan 1,10,20,30,40,50-60,300
switchport mode trunk
spanning-tree portfast trunk
channel-group 22 mode on
!
interface GigabitEthernet2/0/20
description Eth1 - VMwareLAB01
switchport trunk encapsulation dot1q
switchport trunk native vlan 4001
switchport trunk allowed vlan 1,10,20,30,40,50-60,300
switchport mode trunk
spanning-tree portfast trunk
channel-group 22 mode on
!In this case, we set the native VLAN on a “parking VLAN” so the Cisco trunk pass the VLAN 1 tagged and the VMware virtual switch receive them correctly.
enjoy!
.glitchlist crew
Comments 6
Hello
I have a question if i would like set up VMware 6.x HA (Two Server) with Cisco 3750X Stack
How to config the switch?
Thank you
Author
Hi Ya,
Thanks for the question. As explained in the post you can use EtherChannel configuration on VmWare side and “channel-group [n] mode on” on Cisco Port-Channel side. I remain at your disposal for any further information.
.glitchlist crew
Hi .glitchlist crew
Thank you so much for your information
Do you mean configuration LACP vDS in ESX?
Thank you
Ya
Author
Yes, but pay attention on hashing algorithm that must be the same on physical switch and on vDS.
🙂
.glitchlist crew
Hi glitchlist
If i would like use Source and destination IP address, TCP/UDP port and VLAN in ESX
What are commands in switch should I config ?
Thank you
Ya
Author
Hi Ya,
on Cisco 3750X you can choose the followings LACP load balance methods:
C3750X_LAB(config)#port-channel load-balance ?dst-ip Dst IP Addr
dst-mac Dst Mac Addr
src-dst-ip Src XOR Dst IP Addr
src-dst-mac Src XOR Dst Mac Addr
src-ip Src IP Addr
src-mac Src Mac Addr
I hope it helped.
🙂