ip address
The command creates IP interface and adds IP address and subnet mask for a configured interface: physical interface, link aggregation group, tunnel or network bridge.
The use of a negative form (no) of the command removes IP address from the interface. When removing the last address, IP interface is destroyed.
When creating IP interface, the system reserves the biggest vacant VLAN ID that will be used within the system. VLAN is reserved for each IP interface on Ethernet port. If VLAN has already been reserved for IPv6 interface, then VLAN will not be reserved for IP interface.
You may reserve VLAN ID for internal use by ip internal-usage vlan <VLAN_ID> command.
Syntax
ip address <ADDR/LEN>
no ip address {<ADDR/LEN>| all}
Parameters
<ADDR/LEN> – IP address and subnet mask length, defined as AAA.BBB.CCC.DDD/EE where each part AAA-DDD takes values of [0..255] and EE takes values of [1..32]. You can specify several IP addresses separated by commas. Up to 8 IP addresses (including IPv6 addresses) can be assigned to the interface. The use of a negative form (no) of the command with ‘all’ parameter removes all IP addresses.
all – the command deletes all IP addresses on interface.
Required privilege level
10
Command mode
CONFIG-GI
CONFIG-TE
CONFIG-SUBIF
CONFIG-QINQ-IF
CONFIG-PORT-CHANNEL
CONFIG-E1
CONFIG-MULTILINK
CONFIG-VTI
CONFIG-GRE
CONFIG-IP4IP4
CONFIG-BRIDGE
CONFIG-LOOPBACK
CONFIG-LT
Example
esr(config-if-gi)# ip address 192.168.25.25/24
ip redirects
The command enables the mechanism of sending ICMP messages about the existence of a router with a higher priority in the IP network for a specific IP destination.
The use of a negative form (no) of the command disables the mechanism of sending ICMP messages about the existence of a router with a higher priority in the IP network for a specific IP destination.
Syntax
[no] ip redirects
Parameters
The command does not contain parameters.
Required privilege level
15
Default value
Sending of ICMP messages about the existence of a router with a higher priority in the IP network for a specific IP destination is enabled.
Command mode
CONFIG-GI
CONFIG-TE
CONFIG-SUBIF
CONFIG-QINQ-IF
CONFIG-PORT-CHANNEL
CONFIG-BRIDGE
CONFIG-LOOPBACK
CONFIG-E1
CONFIG-MULTILINK
CONFIG-GRE
CONFIG-IP4IP4
CONFIG-LT
Example
esr(config-if-gi)# no ip redirects
ip route source-route
This command enables the ip source-route option on the router.
The use of a negative form of the command (no) disables the support for the ip source-route option.
Syntax
[no] ip route source-route
Parameters
None.
Default value
Disabled.
Required privilege level
10
Command mode
CONFIG
Example
esr(config)# ip route source-route
ip unnumbered
This command enables the interface operation mode with the use of the ip address assigned to another interface.
The use of a negative form (no) of the command disables the ip unnumbered mode.
Syntax
ip unnumbered { <IF> | <TUN> }
no ip unnumbered
Parameters
<IF> – an interface's name, specified in the form described in Section Types and naming order of router interfaces;
<TUN> – names of tunnels are specified as described in section Types and naming order of router tunnels.
Required privilege level
10
Command mode
CONFIG-GI
CONFIG-TE
CONFIG-SUBIF
CONFIG-QINQ-IF
CONFIG-PORT-CHANNEL
CONFIG-BRIDGE
CONFIG-LOOPBACK
CONFIG-E1
CONFIG-MULTILINK
CONFIG-GRE
CONFIG-IP4IP4
Example
esr(config-e1)# ip unnumbered gigabitethernet 1/0/1 esr(config-e1)#
ip unreachables
The command enables the sending of ICMP packets about destination address unavailability.
The use of a negative form (no) of the command disables the sending of ICMP packets about destination address unavailability.
Syntax
[no] ip unreachables
Parameters
The command does not contain parameters.
Required privilege level
15
Default value
Sending of ICMP packets about destination address unavailability.
Command mode
CONFIG-GI
CONFIG-TE
CONFIG-SUBIF
CONFIG-QINQ-IF
CONFIG-PORT-CHANNEL
CONFIG-BRIDGE
CONFIG-LOOPBACK
CONFIG-E1
CONFIG-MULTILINK
CONFIG-GRE
CONFIG-IP4IP4
CONFIG-LT
Example
esr(config-if-gi)# no ip unreachables
show ip interfaces
The command displays the information on IP interfaces existing in the system.
Syntax
show ip interfaces [ vrf <VRF> ] [ { <IF> | <TUN> | ip-address <ADDR> } ]
Parameters
<VRF> – VRF instance name, set by the string of up to 31 characters. When specifying this parameter, IP interfaces will be displayed in a specified VRF;
<ADDR> – IP address, defined as AAA.BBB.CCC.DDD where each part takes values of [0..255]. When specifying this parameter, IP interface with a specified IP address will be displayed;
<IF> – system interface names, specified in the form described in Section Types and naming order of router interfaces;
<TUN> – names of tunnels are specified as described in section Types and naming order of router tunnels.
You may specify several system interfaces in the command. If you do not specify interface indexes, then all IP interfaces related to the system interfaces of the specified type will be displayed.
If the command specifies a certain system interface that receives IP parameters via DHCP, DHCP client settings and the status of IP parameters current lease will be displayed.
Required privilege level
1
Command mode
ROOT
Example
esr# show ip interfaces IP address Interface Type ------------------- ------------- ------- 155.0.0.60/24 br10 static 16.0.0.2/24 gi1/0/16 DHCP 10.0.0.1/8 gi1/0/18 static 180.0.0.1/24 gi1/0/18 static 192.168.1.1/24 gi1/0/2 static 25.0.0.2/30 gre 25 static 10.1.0.2/24 ip4ip4 10 static esr# show ip interfaces gigabitethernet 1/0/16 IP address Interface Type ------------------- ------------- ------- 16.0.0.2/24 gi1/0/16 DHCP DHCP Client settings: DHCP Server: N/A Lease time(dd:hh:mm): 00:02:00 Reboot time: 10 seconds Retry time: 300 seconds Timeout: 60 seconds Select timeout: 0 seconds Vendor class ID: N/A Ignore options: router Latest lease contents: Lease time(dd:hh:mm): 00:02:00 DHCP message type: DHCPACK Renew at: Wednesday2015/02/25 12:22:24 2015/02/25 12:22:24 Rebind at: Wednesday2015/02/25 13:14:09 2015/02/25 13:14:09 Expires at: Wednesday2015/02/25 13:29:09 2015/02/25 13:29:09