TY  - BOOK
AU  - Lewis, Chris 
TI  - Cisco TCP/IP: routing professional reference 
SN  - 0-07-042142-0 
U1  - 004.6 LEW  
PY  - 2000///
CY  - Tata mcgraw hill 
PB  - New Delhi 
KW  - COMPUTER NETWORK
ER  -