Cisco Systems Cisco IOS XR manual That apply to the keyword and brief explanations

Chapter 6 CLI Tips, Techniques, and Shortcuts

CLI Tips and Shortcuts

Step 1	Enter the access-listcommand, followed by a space and a question mark, to list the available options for
	the command:
	RP/0/0/CPU0:router(config)# ipv4 access-list ?
	log-update Control access lists log updates
	maximum	Out of resources configration
	WORD	Access list name - maximum 32 characters
Note	The number ranges (within the angle brackets) are inclusive ranges.
Step 2	Enter the access list name list1, followed by a space and another question mark, to display the arguments
	that apply to the keyword and brief explanations:
	RP/0/0/CPU0:router(config)# ipv4 access-list list1 ?
	<1-2147483646> Sequence number for this entry
	deny	Specifies packets to reject
	permit	Specifies packets to forward
	remark	Comment for access list
	<cr>
	RP/0/0/CPU0:router(config)#ipv4 access-list list1
Step 3	Enter the deny option and a question mark to see more command options:
	RP/0/0/CPU0:router(config)#ipv4 access-list list1 deny ?
	<0-255>	An IPv4 Protocol Number
	A.B.C.D	Source IP address or prefix
	ahp	Authentication Header Protocol
	any	Any source host
	eigrp	Cisco's EIGRP Routing Protocol
	esp	Encapsulation Security Payload
	gre	Cisco's GRE Tunneling
	host	A single source host
	icmp	Internet Control Message Protocol
	igmp	Internet Gateway Message Protocol
	igrp	Cisco's IGRP Routing Protocol
	ipinip	IP in IP tunneling
	ipv4	Any IPv4 Protocol
	nos	KA9Q NOS Compatible IP over IP Tunneling
	ospf	OSPF Routing Protocol
	pcp	Payload Compression Protocol
	pim	Protocol Independent Multicast
	sctp	Stream Control Transmission Protocol
	tcp	Transport Control Protocol
	udp	User Datagram Protocol
	RP/0/0/CPU0:router(config)#ipv4 access-list list1 deny
	Generally, uppercase letters represent variables (arguments).
Step 4	Enter an IP address, followed by a space and a question mark (?), to list additional options:
	RP/0/RP0/CPU0:router(config)# ipv4 access-list list1 deny 172.31.134.0 ?
	A.B.C.D	Wildcard bits
	log	Log matches against this entry
	log-input	Log matches against this entry, including input interface
	<cr>

RP/0/RP0/CPU0:router(config)# ipv4 access-list list1 deny 172.31.134.0

Cisco IOS XR Getting Started Guide

OL-10957-02 6-3