Compatibility mode

Table 24: Modules compatibility mode (enabled versus disabled)
Modules	Compatibility mode enabled	Compatibility mode disabled
v2 zl modules only	Can insert zl module and the module will come up. Any v2 zl modules are limited to the zl configuration capacities.	v2 zl modules are at full capacity.ZL modules are not allowed to power up.
Mixed v2 zl and zl modules	Can insert zl module and the module will come up. Any v2 zl modules are limited to the zl configuration capacities.If compatibility mode is disabled, the zl modules go down.	ZL modules are not allowed to power up.
ZL modules only	Same as exists already.If a v2 zl module is inserted, it operates in the same mode as the zl module, but with performance increases.	The Management Module is the only module that powers up.
ZL modules only	In Compatibility Mode, no v2 zl features are allowed, whether the modules are all v2 zl or not.	If Compatibility Mode is disabled and then enabled, the startup config is erased and the chassis reboots.