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Problem with DHCP

mmalaoui
Level 1
Level 1

Hello,

I created 4 VLANS in my switych cisco SF300-48PP
the switch is connected to a 192.168.1.1 ADSL router
VLAN 1 address 192.168.1.6 DHCP 192.168.1.7-192.168.1.63 / MASK 255.255.225.192
VLAN 2 address 192.168.1.65 DHCP 192.168.1.66-192.168.1.128 / MASK 255.255.225.192
VLAN 3 address 192.168.1.130 DHCP 192.168.1.7-192.168.1.190 / MASK 255.255.225.192
VLAN 1 address 192.168.1.192 DHCP 192.168.1.193-192.168.1.250 / MASK 255.255.225.192

My problem what I have the internet only in the VLAN1 not in the others

 

Cordially

35 Replies 35

i made the roads, now i pingue the router but i still do not have the internet in VLANs 20,30, and 40
I noticed again that I have too much loss by pinging 192.168.1.1,

i made the roads, now i pingue the router but i still do not have the internet in VLANs 20,30, and 40
I noticed again that I have too much loss by pinging 192.168.1.1

have you added default route in switch directed to adsl router? also 3 static routes which destined to VLANs at adsl router. also check for packet drops or errors in connected interface
Please rate this and mark as solution/answer, if this resolved your issue
Good luck
KB

I send you what I did, in the configuration, concerning the losses I started to have as soon as I changed the mask of the Modem ADSL in 26

I put the cable that connects my cisco switch and the ADSL Modem in ports N ° 1

in switch, add below route.
destination - 0.0.0.0
subnet - 0.0.0.0
next hop - 192.168.1.1
after that user traffic will move in to adsl router and return back for VLANs
Please rate this and mark as solution/answer, if this resolved your issue
Good luck
KB

Still no internet in other Vlans

Can you post all your settings from you DLINK router wan side and Lan side setup screen shot.

 

BB

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can you ping to 192.168.1.1 from other VLANs?
Please rate this and mark as solution/answer, if this resolved your issue
Good luck
KB

yes

Now I ping external adress for Model DLINK but I dont have Internet with VLAN 20/30/40

that is bit strange. if default route and internal routes are added it should be able to access internet. can you try traceroute and check where is it getting dropped?

Please rate this and mark as solution/answer, if this resolved your issue
Good luck
KB

41.188.89.113 external Ip adress for dlink

can you able to ping from VLAN 10, 20, 30 to 8.8.8.8 or 1.1.1.1

also post traceroute information to 8.8.8.8 1.1.1.1

 

what is the DNS Setting at PC ?

 

BB

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I do not think it's a DNS problem, because from VLAN 10 I do not have a problem
from VLAN 20,30,40 I can go to the external address of the Modem but I do not go out anymore it's like my vlan addresses are not routable
for the DNS I use 8.8.8.8 I even used other DNS of the operator who walk but without success

Its like routes working well. Check dna. Set em to 8.8.8.8 or 1.1.1.1
Please rate this and mark as solution/answer, if this resolved your issue
Good luck
KB
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