01-28-2021 09:34 AM
Dear ,
I have the below architecture. I am confused how to configure the upstream switches (non cisco switches). I configured port channel on Fabric interconnect level. SW_A , SW_B carried the same vlan vlan 50,vlan60; vlan70. and SW3 carried only one vlan100, disjoin domain is already configured.
Could you please advise how to configure upstream switch.
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01-29-2021 09:42 AM
Because UCS expects the VLAN/.1q tag to be present. Creating a trunk port with only one VLAN assures the VLAN/.1q tag exists on the packets.
Yes.
Yes
Almost never. Just use trunks and tag the VLAN coming into UCS.
01-28-2021 10:27 AM
Each UCS Fabric Interconnect should have two different port channels:
SW_A will have one port-channel which allows 50/60/70;
SW_B will have one port-channel which allows 50/60/70;
SW3 will have two port-channels which allows 100; One port-channel to FI-A and one port-channel to FI-B;
Depends on the switch as the exact configuration will differ as different switches call port-channel different things (port-channel, trunk, bond, ether-channel, etc). The port should be a layer 2 trunk port where the VLAN should be allowed and tagged (not native/untagged/default/access).
The UCS side will need Disjoint Layer 2 to direct VLAN 100 to SW3 configured following:
I'd probably do two VLAN Groups within UCS;
Then allow VLAN Group 1 on uplink port-channel 1 and VLAN Group 2 on uplink port-channel 2 for both Fabric Interconnects.
01-28-2021 10:56 AM
thanks for your reply.
It seems that my query is not clear. I will detailed in the below:
as the ethernet switching mode is set to end host mode, and the uplink will be automatically trunk in the FI side. for the uplinks sw_3 i should connect SW3 port access mode or trunk mode as i have only one vlan, or I should active native vlan.
for SW_A and SW_B should be configured as truck allowed vlan 50;60,70 ?
for the management interface of fabric interconnect , interfaces in upstream switch should be configured access ?
Correct me if I am wrong.
01-29-2021 05:24 AM
The port should be a layer 2 trunk port where the VLAN should be allowed and tagged (not native/untagged/default/access).
Guess it wasn't obvious that the "not" above should be distributed to all descriptions.
Yes, even though there is a single VLAN on SW3; the port-channel on SW3 should be:
The UCS FI really really really wants all VLANs tagged for uplink ports.
The UCS FI management port should be an access port upstream.
01-29-2021 07:48 AM
thanks again for you prompt.
from you posts , i understand that :
correct me if I miss somethings.
the last questions before closing the discussion:
Thanks in advance
01-29-2021 09:42 AM
Because UCS expects the VLAN/.1q tag to be present. Creating a trunk port with only one VLAN assures the VLAN/.1q tag exists on the packets.
Yes.
Yes
Almost never. Just use trunks and tag the VLAN coming into UCS.
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