Dell SmartFabric OS10 User Guide Release 10.5.3

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VxRail VSS to VDS migration scaling numbers

The following table describes the VxRail VSS to VDS migration use case specific scaling numbers.

Table 1. VxRail VSS to VDS scaling numbersVxRail VSS to VDS scaling numbers
Number of VLANs	In case Long time-out is configured for all the port-channel member ports both in actor and partner	In case Short time-out is configured for at least one port-channel member port either in actor or partner
5	80	2
10	50	1

An ESXi server can have a maximum of four uplink ports. Also, individual - to - port-channel member transition and vice versa in a LACP individual port channel that is connected to an ESXi server can only happen for two ports simultaneously, not for all four ports.

With long timeout configured on port-channel members (actor and partner), it is possible to scale up to:

80 LACP individual port channels with four members and five VLANs per port channel.
50 LACP individual port channels with four members and 10 VLANs per port channel.

With short timeout configured on at least a port-channel member, the following are the scale numbers:

- Two LACP individual port channels with four members and five VLANs per port channel.
- One LACP individual port channel with four members and 10 VLANs per port channel.
With LACP short timeout port-channels, the scale number decreases.

NOTE: The time taken to transition an individual port to a port-channel member is more (due to VLAN programming time) and it makes the LACP process wait. If this wait time exceeds three seconds, the LACP short timeout port-channels may timeout and flap. Hence, the scale number with short timeout port-channels are less.

Recommendations

The following recommendations apply for the VxRail VSS - to - VDS migration use case specific scaling numbers:

Configure Long timeout for all port-channel members in this node, and in the peer.
After the VSS - to - VDS migration completes, disable the LACP individual feature on all port-channels.