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Some vlans doesn't have internet access

i have two switches and their vlans are connected and they can access the internet.

But some declared vlans has no internet access. Please help.

6 Replies 6

Reza Sharifi
Hall of Fame
Hall of Fame

Post config from the switch

HTH

Deepak Kumar
VIP Alumni
VIP Alumni

Hi, 

Kindly verify details as below:

 

1. Is there the route available in Switch to send the packet to router or firewall?

2. Is route configured on router or firewall to send the reply packet to switch for VLAN subnet?

3. Are all VLAN subnets configured in NAT policy/ACL?

 

Regards,

Deepak Kumar

 

Regards,
Deepak Kumar,
Don't forget to vote and accept the solution if this comment will help you!

Hi sir. Sorry I'm just a beginner so please do excuse my wrong terms....

 

Let me explain our network.

 

We have 2 switches and a firewall.. 

Firewall ---> SW1 --->SW2

 

The Vlans in SW1 are completely working. But in SW2, there are Vlans declared and enabled to the trunk line but it can't access the internet and it is not throwing any ip. 

 

Again, sorry sir.. hahahaha.. please help me hahaha

Dennis Mink
VIP Alumni
VIP Alumni

Have you check firewall dynamic NAT and access-lists for those VLANs that are not working?

 

can you ping the FW from withing the failing VLAN?

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Hi sir. Sorry I'm just a beginner so please do excuse my wrong terms....

 

Let me explain our network.

 

We have 2 switches and a firewall.. 

Firewall ---> SW1 --->SW2

 

The Vlans in SW1 are completely working. But in SW2, there are Vlans declared and enabled to the trunk line but it can't access the internet and it is not throwing any ip. 

 

Again, sorry sir.. hahahaha.. please help me hahaha

Hi,

Please share Switch1 and Switches 2 running configuration. So we can get basic idea.. what is happening?

 

And Share tracert command output from your client, which is not working..

 

Regards,

Deepak Kumar

Regards,
Deepak Kumar,
Don't forget to vote and accept the solution if this comment will help you!
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