Can Someone please share how to calculate complex wild card for ACLs from binary prospective.
I tried doing AND and XOR method but somehow didn't get it rightly. here is quick requirement those I tested. R1 - R1#sh prot | e un|do Global values: Internet Protocol routing is enabled FastEthernet0/0 is up, line protocol is up Internet address is 11.11.11.1/24 Serial0/0 is up, line protocol is up Internet address is 12.12.12.1/24 Loopback0 is up, line protocol is up Internet address is 10.10.100.1/24 Loopback1 is up, line protocol is up Internet address is 10.10.101.1/24 Loopback2 is up, line protocol is up Internet address is 10.10.102.1/24 Loopback3 is up, line protocol is up Internet address is 10.10.103.1/24 Loopback4 is up, line protocol is up Internet address is 10.10.104.1/24 Loopback5 is up, line protocol is up Internet address is 10.10.105.1/24 Loopback6 is up, line protocol is up Internet address is 10.10.106.1/24 R2 - R2#sh prot | e un|do Global values: Internet Protocol routing is enabled Serial0/0 is up, line protocol is up Internet address is 12.12.12.2/24 Loopback0 is up, line protocol is up Internet address is 22.22.22.22/24 Challenge - Filter all ODD subnets of R1 (loopback ranges) to reach R2's Loopback How I tried to solve it is First convert ODD blocks into binary: 10.10.101.0/24 10.10.103.0/24 10.10.105.0/24 = 00001010 00001010 01100101 00000000 00001010 00001010 01100111 00000000 00001010 00001010 01101001 00000000 next step - performed AND operation AND: 00001010 00001010 01100101 00000000 00001010 00001010 01100111 00000000 00001010 00001010 01101001 00000000 ------------------------------------------------------------- 00001010 00001010 01100001 00000000 ------------------------------------------------------------- back in binary - 10.10.97.0 Next step - Performed XOR operation XOR: 00001010 00001010 01100101 00000000 00001010 00001010 01100111 00000000 00001010 00001010 01101001 00000000 --------------------------------------------------------------- 00000000 00000000 00001110 00000000 ---------------------------------------------------------------- back in binary - 0.0.14.0 final net id and wildcard pair comes as - 10.10.97.0 0.0.14.0 but obviously I am making some mistake some where. Document I referred: - http://www.ine.com/resources/01700370.htm kindly help and suggest the right way with few examples Thanks! Aryan
_______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
