Cisco IOS

We used to have to pay more for the IP Advanced version of IOS to run OSPF on our branch office core routers.
Now I am told that we can run at least one instance of OSPF in IP Base license (cheaper) when running IOS ver 12.2.55se1

Cisco::Firewall::IOS

Cisco IOS firewall implementation guide.

PDF

Cisco::Tip::Reload in X

"reload in x" and "reload cancel"
When making configuration changes remotely that you think might disconnect you if you make a mistake, setup an automatic reboot in a few minutes, make the change, if you screw up and get disconnected, it will restart with the old config. After making a successful change, write the config and then cancel the restart.

The following example reloads the software on the router in 10 minutes:
Router# reload in 10

Router# Reload scheduled for 11:57:08 PDT Fri Apr 21 1996 (in 10 minutes)
Proceed with reload? [confirm]
The following example reloads the software on the router at 1:00 p.m. today:
Router# reload at 13:00

Router# Reload scheduled for 13:00:00 PDT Fri Apr 21 1996 (in 1 hour and 2 minutes)
Proceed with reload? [confirm]

The following example reloads the software on the router on April 20 at 2:00 a.m.:
Router# reload at 02:00 apr 20
Router# Reload scheduled for 02:00:00 PDT Sat Apr 20 1996 (in 38 hours and 9 minutes)
Proceed with reload? [confirm]
The following example cancels a pending reload:
Router# reload cancel
%Reload cancelled.

Network::Cisco::IOS

I often want to look at how ports are configured on a switch, the descr, what vlan, etc.
"show run | include" type commands don't really help because the port config is on multiple lines.

The following are very useful, if only I could remember them:

show int status
show int summary