why host from different vlan cannot ping


i have 2 core BD8800 and few summit x450. i have 3 vlans, my summit switches can ping to all different vlans but my host cant ping to different vlans

i have enabled Ip forwarding

from core switch vlan configuration
-----------------------------------------------------------------------------------------------Name VID Protocol Addr Flags Proto Ports Virtual
Active router
/Total
-----------------------------------------------------------------------------------------------
AccessControl 20 172.19.0.3 /21 -fL----------v--------------- ANY 1 /3 VR-Default
CCTV 10 172.18.0.3 /21 -fL---------Tv--------------- ANY 1 /6 VR-Default
Default 1 172.17.0.3 /21 -fL---------Tv--------------- ANY 3 /155 VR-Default
ISC 99 172.99.0.2 /30 ------I---------------------- ANY 1 /1 VR-Default
Mgmt 4095 ------------------------------------------------- ANY 0 /1 VR-Mgmt
-----------------------------------------------------------------------------------------------

summit edge switches configuration

* X450G2-24p-G4.34 # show vlan-----------------------------------------------------------------------------------------------
Name VID Protocol Addr Flags Proto Ports Virtual
Active router
/Total
-----------------------------------------------------------------------------------------------
AccessControl 20 ------------------------------------------------- ANY 0 /0 VR-Default
CCTV 10 ------------------------------------------------- ANY 1 /1 VR-Default
Default 1 172.17.4.170 /21 -f----------T---------------- ANY 1 /26 VR-Default
Mgmt 4095 ------------------------------------------------- ANY 0 /1 VR-Mgmt
-----------------------------------------------------------------------------------------------

2 replies

Userlevel 6
Can be Ip address conflict? Can be wrong default gateway on your computer Can be wrong ARP on your computer for default gateway. Can be that your computer does have two NICs with two routes/gateways.
thanks for your reply . problem was.. my computer .. i was connected to 2 gateways.

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