# ip icmp update-source

#### Syntax

ip icmp update-source [ vrf vrfName ] { interfaceType interfaceSpecifier | ipAddress }

no ip icmp update-source [ vrf vrfName ] [ interfaceType interfaceSpecifier
| ipAddress ]

#### Release Information

Command introduced before JunosE Release 7.1.0.

#### Description

Specifies a unique source address or interface for any ICMP messages that the E Series router generates. The no version removes the unique source specification.

#### Options

- vrfName—Name of the VRF; string of 1–32 alphanumeric characters
- interfaceType—Interface type; see Interface Types and Specifiers
- interfaceSpecifier—Particular interface; format varies according to interface type; see Interface Types and Specifiers
- ipAddress—IP address of an E Series interface over which you want to send ICMP messages

#### Mode

Global Configuration