Switching

3Com 
 Choosing which firmware to boot 
 verifying current versions: 
 > show version 
 setting next-active to the backup (before update) one: 
 > boot system backup 
 setting next-active to the active (most recent) one: 
 > boot system active 
 Reset to defaults: 
 https://www.vmadmin.co.uk/networking/81-hp-3com/358-reset-3com-switch-to-factory-defaults-forgot-password 
   
 Cisco 
 ACLs 
 Adding ACL example 
 360 permit tcp any 10.3.4.102 0.0.0.0 eq 8000 
 Removing last ACL 
 no 360 
 Global features 
 Filtering output 
 "COMMAND | i" or "COMMAND | include" will filter command output 
 example: 
 "switch1#show running-config | i trunk" 
 "switch1#show running-config | include trunk"