08-10-2010 09:40 AM - edited 03-06-2019 12:24 PM
Hi everybody. I have this scenario,
A 3500 cisco switch and 2900 cisco swtich. I have 3 Vlan in the 3500 and 2900 swithces, Vlan10, 20 and 30. In the 3500 also I have DHCP Server for the Vlan20 and 30, I get a valid IP address and I can ping between Vlan's. I have a Router connected to the Internet and the 3500 Switch.
On the 3500 I configured an Interface for route traffic to the Internet through the Router.
3500(config)# interface fastethernet 0/1
3500(config-if)# no switchport
3500(config-if)# ip address 10.0.10.2 255.255.255.0
3500(config-if)# no shutdown
3500(config-if)# exit
3500(cofnig)# ip route 0.0.0.0 0.0.0.0 10.0.10.1
3500(config)# exit
3500# show ip route
10.0.0.0/24 is subnetted, 3 subnets
C 10.0.10.0 is directly connected, Interface FastEthernet 0/1
C 10.0.20.0 is directly connected, Vlan20
C 10.0.30.0 is directly connected, Vlan30
S* 0.0.0.0/0 [1/0] via 10.0.10.1
3500# ping 10.0.10.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.10.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
The Problem:
From any PC that I try to ping the default gateway for the Internet 10.0.10.1 and Fail. Also I try to browse a web page do not work.
PC Vlan20:
IPv4 address: 10.0.20.10
Subnet Mask: 255.255.255.0
Default Gateway: 10.0.20.1 (3500 Vlan Interface)
DNS Server: 10.0.10.3
I can ping from a PC in the VLan20 to PC in the Vlan30, I can ping from PC in the VLan 20 to all Vlan Interface on the 3500 Switch. I can ping from the 3500 Switch to PC Vlan20 and 30, I can ping from 3500 Switch to Router 10.0.10.1 and DNS server 10.0.10.3. But I can NO ping from VLAN PC to Router 10.0.10.1 and the DNS Server 10.0.10.3 and also I can no browse any web page on the Internet.
Thank you for all.
Solved! Go to Solution.
08-10-2010 09:44 AM
You need to add routes for your 3550 vlans onto the router eg.
ip route 10.0.20.0 255.255.255.0 10.0.10.2
ip route 10.0.30.0 255.255.255.0 10.0.10.2
Jon
08-10-2010 09:44 AM
You need to add routes for your 3550 vlans onto the router eg.
ip route 10.0.20.0 255.255.255.0 10.0.10.2
ip route 10.0.30.0 255.255.255.0 10.0.10.2
Jon
08-10-2010 09:46 AM
Does your router has routes point back to 10.10.10.2 for 10.10.20.0/24 (VLAN20) and 10.10.30.0/24 (VLAN30)?
Regards,
jerry
08-10-2010 09:56 AM
Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: