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Updated:April 14, 2021
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After portchannel mode switch, vNIC configurations are lost and new default vNICs are created. Do you want to continue?[y|N]y Warning: Change portchannel mode
All the vnic configuration are reset to factory defaults.
New VNIC adapter settings will take effect upon the next server reset.
Kindly do server reset before doing any further config.
Scenario 3. VIC 14XX in Standalone Mode in Port-channel – With LACP
With default port-channel enabled, switch dependent port-channel is possible from the OS on the server with single-Link from VIC 1455/1457 towards each TOR switch in multi-chassis trunking (MCT). Examples of MCT are VPC from Cisco or mLAG supported on third-party switches
Caution - With dual-link towards each TOR and with default port-channel on the VIC, switch dependent port-channel is not possible from the OS on the server. In this case on each TOR, non-lacp port-channel would have to be created and a VPC like MCT port-channel spanning multiple TOR switch is not possible.
Another important key takeaway:
LACP is not supported on the standard switches in ESXi. Customer needs to have a DVS Switch to support LACP
Details about Forward Error Correction (FEC) Mode:
FEC mode is applicable only for 25G link speed. On the 14xx adapters, FEC mode set on the adapter must match the FEC mode of the switch. Otherwise, the link does not come up.
The default value is Auto
Server# scope chassis
Server /chassis # scope adapter 1
Server /chassis/adapter # scope ext-eth-if 1
Server /chassis/adapter/ext-eth-if # set admin-fec-mode cl74
Server /chassis/adapter/ext-eth-if* # commit
Changes to the network settings will be applied immediately.
You may lose connectivity to the Cisco IMC and may have to log in again.
Do you wish to continue? [y/N] y
MAC Address: 00:5D:73:1C:6C:58
Link State: LinkDown
Encapsulation Mode: CE
Admin Speed: Auto
Operating Speed: -
Link Training: N/A
Admin FEC Mode: cl74
Operating FEC Mode: Off
Connector Present: NO
Connector Supported: N/A
Connector Type: N/A
Connector Vendor: N/A
Connector Part Number: N/A
Connector Part Revision: N/A
Server /chassis/adapter/ext-eth-if #
Known defect: CSCvp97248 Auto FEC mode on VIC 14xx adapters should change based on the transceiver inserted