3850 SSO

[avilt]

In earlier model of 3750, I have used flexlinks on L2 interfaces.

Example: 

interface GigabitEthernet1/0/20
description Vlan-10
switchport access vlan 10
switchport mode access
switchport backup interface Gi2/0/20

However, on newer 3850 with OS 16.x.x does not support flexlink.

Can I use SSO to overcome this limitation? Can it be used for L2 interfaces or only on L3 interfaces?

[balaji.bandi]

see the release notes :

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3850/software/release/16-6/release_notes/ol-16-6-3850.html

Flex Links are not supported. We recommend that you use spanning tree protocol (STP) as the alternative.

[avilt]

Can I use SSO to overcome this limitation? Can it be used for L2 interfaces or only on L3 interfaces?