MEMORANDUM **

Gilberto Ceniceros-Vega appeals his guilty-plea conviction and 60-month sen*844tence for possession with intent to distribute more than 100 kilograms of marijuana, in violation of 21 U.S.C. § 841(a)(1).

Pursuant to Anders v. California, 386 U.S. 738, 87 S.Ct. 1396, 18 L.Ed.2d 493 (1967), Ceniceros-Vega’s counsel has filed a brief stating there are no grounds for relief, along with a motion to withdraw as counsel of record. Ceniceros-Vega has filed a pro se supplemental brief. The government did not file a brief.

Ceniceros-Vega contends that his guilty-plea was involuntary because counsel misadvised him about his likely sentence. Because Ceniceros-Vega received all the advisements required under Rule 11 of the Federal Rules of Criminal Procedure, however, his plea was voluntary. See United States v. Turner, 881 F.2d 684, 686-87 (9th Cir. 1989) (stating that counsel’s erroneous estimate of the applicable Sentencing Guideline range did not violate Rule 11 and thereby render the plea involuntary), overruled on other grounds by United States v. Rodriguez-Razo, 962 F.2d 1418, 1424 (9th Cir. 1992).

Ceniceros-Vega also contends that in misadvising him about sentencing counsel rendered ineffective assistance. Because “[t]he customary procedure for challenging the effectiveness of defense counsel in a federal criminal trial is by collateral attack on the conviction under 28 U.S.C. § 2255[,]” we decline to address this contention on direct appeal. See United States v. Pirro 104 F.3d 297, 299 (9th Cir. 1997).

Our independent review of the record pursuant to Penson v. Ohio, 488 U.S. 76, 80-81, 109 S.Ct. 346, 102 L.Ed.2d 300 (1988), discloses no grounds for relief on direct appeal.

Accordingly, counsel’s motion to withdraw is GRANTED and the district court’s judgment is AFFIRMED.