Got a quick question, hope someone can verify my thoughts and correct me if I am wrong! 
We have a Cisco 3560 at the core of one of our networks, doing L3 etc. There is a VLAN for servers on VLAN 100 (10.220.0.0).
I have a need to build another segment of servers but on a different subnet to VLAN 100 servers. These are in VLAN 300 (10.225.0.0) and are a Hyper-V cluster.
What I would like to do is have the Hyper-V guest VM's to be on VLAN100 network, without needing a separate switch just for it.
I think the following would work, can anyone confirm?
This should allow all VLANs over the connection (Trunk) between the two switches, with the Native VLAN set to 300 so that any traffic sent over that is not tagged to a VLAN will be in VLAN 300.
Traffic that leaves port g1/0/1 (for example) on the 3com switch that is not tagged by the server will be on VLAN 300. This port will also allow traffic to leave the port that has been tagged by the server to be on VLAN 100 specifically.
I was reading up and Hyper-V virtual networks are in "trunking mode" by default, and we just need to specify per-VM what VLAN it should be on.
http://social.technet.microsoft.com...hyper-v-configure-vlans-and-vlan-tagging.aspx
Edit: I realise I might be able to just do a port link-type trunk on the 3com g1/0/1 interface as well, rather than a Hybrid.
Cheers
Dave
We have a Cisco 3560 at the core of one of our networks, doing L3 etc. There is a VLAN for servers on VLAN 100 (10.220.0.0).
I have a need to build another segment of servers but on a different subnet to VLAN 100 servers. These are in VLAN 300 (10.225.0.0) and are a Hyper-V cluster.
What I would like to do is have the Hyper-V guest VM's to be on VLAN100 network, without needing a separate switch just for it.
I think the following would work, can anyone confirm?
Code:
On Cisco 3560X:
interface gi0/16
description Trunk Link to Cabinet RS4 g1/0/24
switchport mode trunk
switchport trunk allowed vlan all
switchport trunk native vlan 300
On 3com 5500:
interface g1/0/24
description Trunk Link to Core Cisco gi0/16
port link-type trunk
port trunk permit vlan all
port trunk pvid vlan 300
For individual ports on 3com 5500:
interface g1/0/1
description Link to HyperV Server 1
port link-type hybrid
port hybrid pvid vlan 300
port hybrid vlan 300 untagged
port hybrid vlan 100 taggedThis should allow all VLANs over the connection (Trunk) between the two switches, with the Native VLAN set to 300 so that any traffic sent over that is not tagged to a VLAN will be in VLAN 300.
Traffic that leaves port g1/0/1 (for example) on the 3com switch that is not tagged by the server will be on VLAN 300. This port will also allow traffic to leave the port that has been tagged by the server to be on VLAN 100 specifically.
I was reading up and Hyper-V virtual networks are in "trunking mode" by default, and we just need to specify per-VM what VLAN it should be on.
http://social.technet.microsoft.com...hyper-v-configure-vlans-and-vlan-tagging.aspx
Edit: I realise I might be able to just do a port link-type trunk on the 3com g1/0/1 interface as well, rather than a Hybrid.
Cheers
Dave
