###CiscoIOS
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/fundamentals/configuration/15mt/fundamentals-15-mt-book/cf-cli-basics.html




- ip
- ipv6
- access-list
- extended
- object-group
- permit
- deny
- name
- sequence




- icmp
- gre
- ospf
- esp
- ahp
- igmp

- any
- host
- object-group
- ip-netmask like 1.1.1.1/32


- eq
- range
- lt
- gt
- neq


- esablished
- log


- icmp
   - echo
   - echo-request
   - echo-reply
   - uncreachable
   - port-unreachable
   - time-exceeded
   - nd-na
   - nd-ns