Router [Cisco] Points to check when static routes are not added even if add-route is set in NAT
Operation confirmation environment
C891FJ-K9
Version 15.8(3)M9
"add-route" option in NAT
If you specify t...
Cisco
Router 
Switch [Cisco Nexus 9000] About redistribution configuration to OSPF/EIGRP
Work environment
Nexsus 9300v
NXOS: version 9.3(10)
Redistribution configuration into OSPF
To configure r...
Firewall (UTM) [Cisco] Firepower(ASA) Configuration Tips
Interface
Loopback Interface cannot be configured on ASA.
Failover
If you use one interface as Fail...
Router [Cisco ASR 1002-X] How to configure static link aggregation
Consider setting static link aggregation (mode on) on your ASR 1002-X. Now if you check the options with the "channel-g...
Switch [Cisco] Cause of starting with empty config after reboot [Catalyst 9000]
Target environment
Catalyst 9000 series switches
Symptoms
Even though the startup-config is saved, the devi...
Router [Cisco] How to configure NAT [Full commentary]
Operating environment
C891FJ-K9 Version 15.8(3)M9
Basic knowledge of NAT
Inside and outside interfaces
When...
Router [Cisco] Which one should I use as the C891FJ-K9 IOS file?
Question: Which IOS should I use?
If you look at the product list on Cisco's Software Download site, you can see tha...
Switch [Cisco] Smart Licensing cssm offline trouble case
Target environment
C9000 series switchesIOS-XE 17.3.2 or later
Trouble case
Ack import succeeds but Usage Repo...
Router [Cisco] How to check the ios version recommended by Cisco
Need for firmware upgrade
When dealing with Cisco equipment in a network construction project, the engineer in charg...
Router [Cisco] How to decode the encrypted password on the config
Introduction
When dealing with a network device replacement project, the config of the existing device is received f...