04-24-2024 08:05 AM
hi
i am trying to cable up trhe ucs 6454. I got 2 40G mopdules on port 53 and 54 on each fabric.
I got 2 core switches to connect therm to
FABRIC 1
port 53 ----> port 1 on Core switch A
Port 54 -----> port 1 on Core Switch B
FABRIC 2
port 53 ------> port 2 on Core Switch A
port 54 ------> port 2 on Core switch B
Is this correct cablingand how do i configure the port channels?
04-24-2024 08:19 AM
You can configure Layer2 Port-channel if this is nexus vpc you can configure mesh network :
04-24-2024 08:29 AM
these will be trunked links carrying multiple vlans
04-24-2024 08:37 AM
possible, depends on requirement and other side switch capabilites. you should carry multple vlan to meet the requirement on virtual requirement.
04-24-2024 08:55 AM
Follow any Cisco CVD. Just googled this one:
+ https://www.cisco.com/c/en/us/td/docs/unified_computing/ucs/UCS_CVDs/flexpod_xseries_vmware_7u2.html
See sections:
+ Create Port Channels
+ Configure Port Channel Parameters
04-25-2024 07:00 AM
this is my diagram. do i need creatre port channels with single 40G link per fabric to each core?
i dont understasnd
04-25-2024 07:19 AM
i am confused how the port channel will be created on the core. if only 1 link per fabric is connected?
04-25-2024 07:20 AM - edited 04-25-2024 07:21 AM
UCS uplink docs:
Are your core switches vPC/MC-LAG capable?
https://en.wikipedia.org/wiki/Multi-chassis_link_aggregation_group
If so, then follow the CVD to create:
If not, then I would probably forget about port-channels and make each wire an individual uplink.
UCS will "pin" each vNICs to a single uplink (with multiple vNICs in multiple servers getting "pinned" across all uplinks) and fail over to remaining uplinks when one uplink goes down.
04-25-2024 08:05 AM - edited 04-25-2024 08:06 AM
i looked at the cvd, why isnt po11 include E1/50? I onl;y see E1/49. should a po be at least 2 links?
04-25-2024 08:18 AM
From the upstream switch (pair) perspective there are two independent (vPC) port-channels.
One port-channel 11 to UCS FI-A.
One port-channel 12 to UCS FI-B.
Both upstream switches would have both vPC port-channels.
UCS Fabric Interconnects do NOT support back-to-back vPC where all 4 links would be in one single (vPC) port-channel.
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