I Commands
This chapter describes the system management commands that begin with I.
ip access-list (session)
To create an IPv4 access control list (ACL) within a configuration session, use the ip access-list command. To remove an ACL from a configuration session, use the no form of this command.
Syntax Description
Name of the IPv4 ACL. The name can be up to 64 alphanumeric characters and cannot contain a space or quotation mark. |
Command Default
Command Modes
Global session configuration mode
Command History
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Examples
This example shows how to create an IPv4 ACL for a configuration session:
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ip dns source-interface
To configure the source interface for the Domain Name Server (DNS) domain lookup, use the ip dns source-interface command. To revert to the default settings, use the no form of this command.
ip dns source-interface { ethernet slot / port | loopback intf-num } [ vrf { vrf-name | default | management }]
no ip dns source-interface { ethernet slot / port | loopback intf-num } [ vrf { vrf-name | default | management }]
Syntax Description
Command Default
Command Modes
Command History
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Usage Guidelines
Examples
This example shows how to configure an Ethernet interface as the source interface for a DNS lookup:
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ip domain-list
To configure the IP domain list, use the ip domain-list command. To disable the IP domain list, use the no form of the command.
ip domain-list domain-name [ use-vrf name ]
no ip domain-list domain-name [ use-vrf name ]
Syntax Description
Command Default
Command Modes
Global configuration mode
VRF context configuration mode
Command History
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Usage Guidelines
Use the ip domain-list command to configure additional domain names for the device. Use the vrf context command to enter the VRF context mode to configure additional domain names for a particular VRF.
Examples
This example shows how to configure the IP domain list for the default VRF:
This example shows how to configure the IP domain list for the management VRF:
This example shows how to configure the IP domain list for the default VRF to use the management VRF as a backup if the domain name cannot be resolved through the default VRF:
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Displays information about the IP domain name configuration. |
ip domain-lookup
To enable the Domain Name Server (DNS) lookup feature, use the ip domain-lookup command. Use the no form of this command to disable this feature.
Syntax Description
Command Default
Command Modes
Command History
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Usage Guidelines
Examples
This example shows how to configure the DNS server lookup feature:
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ip domain-name
To configure a domain name, use the ip domain-name command. To delete a domain name, use the no form of the command.
ip domain-name domain-name [ use-vrf name ]
no ip domain-name domain-name [ use-vrf name ]
Syntax Description
Command Default
Command Modes
Global configuration mode
VRF context configuration mode
Command History
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Usage Guidelines
Use the ip domain-name command to configure the domain name for the device. Use the vrf context command to enter the VRF context mode to configure the domain monastery for a particular VRF.
Examples
This example shows how to configure the IP domain name for the default VRF:
This example shows how to configure the IP domain name for the management VRF:
This example shows how to configure the IP domain name for the default VRF to use the management VRF as a backup if the domain name cannot be resolved through the default VRF:
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Displays information about the IP domain name configuration. |
ip host
To define static hostname-to-address mappings in the Domain Name System (DNS) hostname cache, use the ip host command. To remove a hostname-to-address mapping, use the no form of this command.
ip host name address1 [ address2... address6 ]
no ip host name address1 [ address2... address6 ]
Syntax Description
Hostname. The name can be any case-sensitive, alphanumeric string up to 80 characters. |
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(Optional) Up to five additional IPv4 addresses in the x.x.x.x format. |
Command Default
Command Modes
Command History
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Usage Guidelines
Examples
This example shows how to configure a static hostname:
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Displays information about the IP domain name configuration. |
ip name-server
To configure a name server, use the ip name-server command. To disable this feature, use the no form of the command.
ip name-server ip-address [ use-vrf name ]
no ip name-server ip-address [ use-vrf name ]
Syntax Description
(Optional) Specifies the virtual routing and forwarding (VRF) to use to reach the name-server. The name can be any case-sensitive, alphanumeric string up to 32 characters. |
Command Default
Command Modes
Global configuration mode
VRF context configuration mode
Command History
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Usage Guidelines
Use the ip name-server command to configure the name server for the device. Use the vrf context command to enter the VRF context mode to configure the domain names for a particular VRF.
Examples
This example shows how to configure the IP name server for the default VRF:
This example shows how to configure the IP name server for the management VRF:
This example shows how to configure the IP name server for the default VRF to use the management VRF as a backup if the IP name server cannot be reached through the default VRF:
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Displays information about the IP domain name configuration. |
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ip port access-group (session)
To apply an IPv4 access control list (ACL) to an interface as a port ACL, use the ip port access-group command. To remove an IPv4 ACL from an interface, use the no form of this command.
ip port access-group access-list-name { in | out }
no ip port access-group access-list-name { in | out }
Syntax Description
Name of the IPv4 ACL. The name can be up to 64 alphanumeric, case-sensitive characters long. |
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Command Default
Command Modes
Session interface configuration mode
Command History
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Examples
This example shows how to apply an IPv4 ACL named ip-acl-01 to the Ethernet interface 1/2 as a port ACL:
This example shows how to remove an IPv4 ACL named ip-acl-01 from Ethernet interface 1/2:
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