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Cisco Routing Question

Posted on 2014-03-10
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Last Modified: 2015-09-15
I am planning on replacing some of our networking equipment as it is currently patch worked together.  Currently I am using a 3825 and a 3550 to do the routing at the hub location of our network.  My plan was to replace these two devices with a 3560X that I have.  

I have attached the config of the 3560X that I attempted to use.  The problem I have was the switch would only pass 192.168.1.X traffic out to our firewall.  My guess is it is a VLAN issue as traffic between all of the locations worked correctly.  I can provide any other relevant information to anyone who has any suggestions on this.
s1config.txt
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Question by:joshparker
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7 Comments
 

Author Comment

by:joshparker
ID: 39918631
I should have mentioned that 192.168.1.1 is the address of my firewall connected via g0/22.
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Expert Comment

by:Don Johnston
ID: 39918982
1) Is your FW configured to NAT traffic from all the networks?

2) Does your FW have routes to the networks with the 3560 as the next hop?
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Author Comment

by:joshparker
ID: 39919000
My firewall is configure to nat traffic from all networks and also has routers for all networks back to the 3560X  I was able to ping from the firewall to all networks but could not ping the firewall from those networks.  

I am pretty sure the problem was the firewall and entire 192.168.1.X subnet being on VLAN1.  I could access outside the network from that subnet but not any of the others but was unsure how to solve the issue.
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Expert Comment

by:Don Johnston
ID: 39919010
I was able to ping from the firewall to all networks but could not ping the firewall from those networks.  

Since pings are bi-directional, if the firewall can ping a device on network A, then a device on network A can ping the firewall... unless the firewall is blocking the ICMP echo request.

From a device on one of the problem networks, do a traceroute to the internet and see where it stops.  That would be a good starting point.
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Author Comment

by:joshparker
ID: 39919044
All traffic bound for outside the network stopped at the 3560 when doing a trace route.
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Accepted Solution

by:
joshparker earned 0 total points
ID: 40971776
Ended up using a different piece of equipment
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Author Closing Comment

by:joshparker
ID: 40977690
Couldnt find a solution so used a different piece of equipment
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