I put together this list of practice RIFs for anybody who is studying for the CCIE Written. Please let me know if you have any to add to the list, or if you find any errors; also let me know if this is helpful, or if you have any comments... Enjoy... 1. RIF - 0810.0011.0033.0040 2. RIF - 0a10.0032.00b3.0124.0020 3. RIF - 0810.0022.0013.0020 4. RIF - 0800.0011.0022.0030 5. RIF - 0a10.0011.00a2.0033.0040 6. RIF - 0630.0011.0191.0030 7. RIF - 0810.00a1.014f.01e0 8. RIF - 0830.0195.00a1.0230 9. RIF - 0a10.0045.0067.0101.0080 10. RIF - 0c10.047e.0067.00c8.043a.0080 Here are my answers: 1. The RIF is valid, and its breakdown is: RIF type: single route frame RIF Length: 8 bytes Direction to read the RIF: left-to-right Maximum frame length: up to 1,500 bytes Ring 1 (0x1), Bridge 1 (0x1) Ring 3 (0x3), Bridge 3 (0x3) Ring 2 (0x4) to the destination 2. The RIF is valid, and its breakdown is: RIF type: single route frame RIF Length: 10 bytes Direction to read the RIF: left-to-right Maximum frame length: up to 1,500 bytes Ring 3 (0x3), Bridge 2 (0x2) Ring 11 (0xb), Bridge 3 (0x3) Ring 18 (0x12), Bridge 4 (0x4) Ring 2 (0x2) to the destination 3. The RIF is valid, and its breakdown is: RIF type: single route frame RIF Length: 8 bytes Direction to read the RIF: left-to-right Maximum frame length: up to 1,500 bytes Ring 2 (0x2), Bridge 2 (0x2) Ring 1 (0x1), Bridge 3 (0x3) Ring 3 (0x3) to the destination 4. The RIF is valid, and its breakdown is: RIF type: single route frame RIF Length: 8 bytes Direction to read the RIF: left-to-right Maximum frame length: up to 512 bytes Ring 1 (0x1), Bridge 1 (0x1) Ring 3 (0x2), Bridge 3 (0x2) Ring 3 (0x3) to the destination 5. The RIF is valid, and its breakdown is: RIF type: single route frame RIF Length: 10 bytes Direction to read the RIF: left-to-right Maximum frame length: up to 1,500 bytes Ring 1 (0x1), Bridge 1 (0x1) Ring a (0x10), Bridge 2 (0x2) Ring 3 (0x3), Bridge 3(0x3) Ring 4 (0x4) to the destination 6. The RIF is invalid because the length specified in the RIF differs from the actual length of the RIF 7. The RIF is valid, and its breakdown is: RIF type: single route frame RIF Length: 8 bytes Direction to read the RIF: left-to-right Maximum frame length: up to 1,500 bytes Ring 10 (0xa), Bridge 1 (0x1) Ring 20 (0x14), Bridge 15 (0xf) Ring 30 (0x1e) to the destination 8. The RIF is valid, and its breakdown is: RIF type: single route frame RIF Length: 8 bytes Direction to read the RIF: left-to-right Maximum frame length: up to 4,472 bytes Ring 25 (0x19), Bridge 5 (0x5) Ring 10 (0xa), Bridge 1 (0x1) Ring 35 (0x23) to the destination 9. The RIF is valid, and its breakdown is: RIF type: single route frame RIF Length: 10 bytes Direction to read the RIF: left-to-right Maximum frame length: up to 1,500 bytes Ring 4 (0x4), Bridge 5 (0x5) Ring 6 (0x6), Bridge 7 (0x7) Ring 16 (0x10), Bridge 1 (0x1) Ring 8 (0x8) to the destination 10. The RIF is valid, and its breakdown is: RIF type: single route frame RIF Length: 12 bytes Direction to read the RIF: left-to-right Maximum frame length: up to 1,500 bytes Ring 71 (0x47), Bridge 15 (0xe) Ring 6 (0x6), Bridge 7 (0x7) Ring 12 (0xc), Bridge 8 (0x8) Ring 67 (0x43), Bridge 10 (0xa) Ring 8 (0x8) to the destination Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=17426&t=17426 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]