Exhibit 99.17 MBNA MASTER CREDIT CARD TRUST II SERIES 1997-B KEY PERFORMANCE FACTORS September 30, 2000 Expected B Maturity 3/15/12 Blended Coupon 6.8547% Excess Protection Level 3 Month Average 5.74% September, 2000 5.68% August, 2000 5.52% July, 2000 6.02% Cash Yield 19.26% Investor Charge Offs 4.49% Base Rate 9.08% Over 30 Day Delinquency 4.99% Seller's Interest 8.50% Total Payment Rate 13.85% Total Principal Balance $54,293,652,263.17 Investor Participation Amount $1,000,000,000.00 Seller Participation Amount $4,612,451,744.68