Catalyst9000 IOSXE 17.12.5 Default values

[CHISHIUNG]

I have a question about the following default values in Catalyst 9000 series version 17.12.5.

・no thermal shutdown disable
I have a concern that the temperature will rise and the power will be turned off when the FAN fails.

・no ethernet reuse subInterface
I assume that this is to prohibit reuse of sub-interfaces and to prevent interface conflicts and configuration errors, but is there any advantage to enabling it?

・router ospf 1
max-lsa 50000 75 ignore-time 5 reset-time 10 ignore-count 5
Is there any advantage to enabling it?
Also, is there any particular problem in operating with the above default values?

・router ospf 1
redistribute maximum-prefix 10240 75
Please tell me how to check the current number of routes redistributed to OSPF.

[Enes Simnica · Accepted solution]

hello G. no thermal shutdown disable (Default/ Enabled) - The default setting enables thermal shutdown, which protects the switch from overheating by powering it off if temperatures become critical (for example..during fan failure). Disabling this (thermal shut disable) is risky and not recommended unless you have redundant cooling.

2. no ethernet reuse subInterface (Default - disabled)  - By default, subinterface IDs (//// Gi0/0.100) cannot be reused after deletion, preventing configuration conflicts. Enabling reuse (ethernet reuse subInterface) helps in automation but risks misconfigurations if old references exist. always stick with defaults G... unless necessary.

3. OSPF max-lsa.... / This safeguards OSPF from excessive LSAs: 50000 lsas max, with warnings... and if exceeded ospf ignores for as i can remember 5 min and resets after 10min.... 

and 4: Checking OSPF Redistributed Routes u have the command: show ip ospf databa extern with the option of | incl.... or if u want to count them show ip route ospf | count

and if u have EVEng would be great to test it there, with also different show commands and stuff... have fun G, and hope it helps...

-Enes