all - inclusive annual maintenance service required to run the infrastructure in connection with integrated data network system at nabanna, 325, sarat chatterjee road, howrah, west bengal-711102 for 02gwo ) years. ob no: kitirw / 175 o122-231 - all inclusive annual maintenance of layer-3 core switch with all accessories including replacement of all components / spares as and when necessary with adequate back-up support during downtime ( switch make: cisco, model: ws-c4506-e : year of installation : 2013 ) , qty: 02 set. 2 all inclusive annual maintenance of layer-3 distribution switch with all accessories including replacement of all components / spares as and when necessary with adequate back-up support during downtime ( switch make: cisco, model: ws-c4500x-16sfp+ : year of installation : 2013 ) , qty: 08 set. 3 all inclusive annual maintenance of layer-2 access switch ( 24-port ) with all accessories including replacement of all components / spares as and when necessary with adequate back-up support during downtime ( switch make: cisco, model: ws-c2960s-24td-l ) , qty: 56 set. 4 all inclusive annual maintenance of layer-2 access switch ( 48-port ) with all accessories including replacement of all components / spares as and when necessary with adequate back-up support during downtime ( switch make: cisco, model: ws-c2960s-48td-l ) , qty: 08 set. 5 all inclusive annual maintenance of wireless access point with all accessories including replacement of all components / spares as and when necessary with adequate back-up support during downtime ( switch make: cisco, model: air=sap1620e-n-k9 ) , qty: 38 set. 6 onsite facility management support by qualified professional [ 01 ( one ) qualified oem accredited network engineer and 01 ( one ) network support professional ] for 24 ( twentyfour ) months.