# ike crl

#### Syntax

ike crl { ignored | optional | required }

no ike crl

#### Release Information

Command introduced before JunosE Release 7.1.0.

#### Description

Controls how the router handles certificate revocation lists (CRLs) during negotiation of IKE phase 1 signature authentication. The no version returns the CRL setting to the default, optional.

| Note: This command has been replaced by the ipsec crl command and may be removed completely in a future release.

#### Options

- ignored—Allows negotiations to succeed even if a CRL is invalid or the peer's certificate appears in the CRL; this is the most lenient setting
- optional—If the router finds a valid CRL, it uses it; this is the default
- required—Requires a valid CRL; either the certificates belonging to the E Series router or the peer must not appear in the CRL; this is the strictest setting

#### Mode

Global Configuration