Half of DHCP subnet cannot connect to router/default gateway

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hi,

it may sound weird have set dhcp server range 192.168.30.1/23 - 192.168.31.254/23. however, newer clients can't ping default gateway 30.1 - 30.254. when set client reservation ip range x.x.31.1 - x.x.31.254, can ping default gateway. in addition, older reserved clients has reserved ip between x.x.30.1 - x.x.30.254 can ping default gateway. confused. please me.

here's configuration:

scope: 192.168.30.0

ip range: 192.168.30.1 192.168.31.254

subnet: 255.255.254.0

exclusions: 192.168.30.1 192.168.31.200

router: 192.168.30.1

dns servers: 192.168.30.10, 192.168.30.3, 8.8.8.8


hi peter,

if both clients can ping dhcp server - picked random local subnet host pick on (there no cryptic reason it), i'm quite issue gateway device/host itself.

if can ping any/every other client on same subnet gateway unresponsive particular sub-range, points bad subnet mask on gateway device.

what result in icmp (i.e. ping, tracert etc.) traffic correctly sent client gateway device, nothing returned gateway device performs subnet masking , decides client indeed not on interfaces network.

i'd stop looking @ clients or dhcp scope , focus exclusively on gateway configuration.

cheers,
lain



Windows Server  >  IPAM, DHCP, DNS



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