Hi Shyam,Is this a hybrid switch running catos? if so these are few things you would want to check.

1- Make sure L3 interface the switch uses for default route is up/up

2- On switch check you have sc0 configured

e.g say sc0 uses 10.10.10.2/24 for IP

set interface sc0 xyc 10.10.10.2 255.255.255.0 where xyc is the vlan# the sc0 interface is under.

default route

e.g Say defaul route for vlan xyc is 10.10.10.1

set ip route 0.0.0.0 10.10.10.1

try pinging defaul route from switch if you receive replies you are good, if not check L3 interface for 10.10.10.1 is up on router, issue on L3 device show interface vlan xyc and see status, if is up/up ping switch IP address 10.10.10.2 from router.

HTH

Jorge

Pls rate any post if it helps!