I have several routers that have a tunnel resource showing up and showing an impossible utilization of over $3900 percent. It has a designation of Tunnel1 - Tu2. What is this and how can I troubleshoot it?
They may be GRE tunnels. If you do a "show IP interface brief", you'll see the list of tunnels. Then if you do a "show interface tunnelxxx" you can see what the bandwidth is being reported. They're probably set to the default value.
these are usually vpn tunnels
all you need to do is set the bandwdth for the tunnel (manually if you need to)
if it is on a spoke then asign the same bandwidth as the link to the spoke
if it is the hub then go with the max ethernet link you have on the device.
I don't think these are vpn tunnels but I don't know for sure. How can I verify that?
You need to examine the interface configs on the device. Look for IPSec and/or VPN configuration.
I tried to login to the interface and I got a message that says % this interface cannot be modified. I did a show config from enable mode and I didn't see interface tu2 anywhere. this is an MPLS router so I doubt there would be any vpns on it. What else could this be?
Ah - try show MPLS interfaces. It is an MPLS tunnel.
Here is a good blog about MPLS tunnnels. MPLS Tunnels Explained
I tried show mpls interfaces and it did not like the mpls. What else could the command be? Also, these are throwing alot of alerts for utilization way over 100%. Any ideas to correct that off the top of your head? do i need to increase something on the router or adjust something in solarwinds?
this is looking good. the recieve and transmit bandwidth is set to 8000 kbps. I can see the txload is 255/255, does that mean the transmit is maxed out? should I adjust the max on the router? I'm assuming the the router will not allow the tunnel to use more than the 8000 kbps even if the interface has available bandwidth?
Do you know what your up/down speed is of your internet connection? If so, you can do this: go into config mode and into the tunnel interface. Then say "bandwidth nnnnnn" to set the correct bandwidth. That number needs to be in bits per second. If it's a DSL connection, this will be your transmit speed. Then you can enter "bandwidth receive nnnnnnn" for your download speed. Some IOS versions also allow you to set "tunnel bandwidth transmit nnnnnnn" and "tunnel bandwidth receive nnnnnn". After that is set, you can make those values custom values for the tunnel interfaces in Orion. Although I seen cases where Orion will poll the router and auto change that value.
I adjusted the custom bandwidth on all the tunnel interfaces to match what I found in the routers and they all came down to normal numbers except for one. One is howing 100% on the transmit. How do I confirm this in the router and should I increase it?
