Is it possible to oversubscribe an Ethernet interface?
I have a 7513 router with four 10BaseT Ethernet interfaces, four 100BaseTX interfaces and two ATM interfaces. We have an independant company connected to interface E8/0/4 and they seem to be oversubscribing the interface. The problem is, that at certain times the interface is showing 2500 - 3000 packets input, with 9325872 output drops. This causes the routers CPU to shoot through the roof, causing EIGRP recalcs etc. As soon as I shut down this interface the problem goes away (within 1 second).
Could this interface be sending so much traffic that it is killing the CPU, and is there anything I could do about it?
Re: Is it possible to oversubscribe an Ethernet interface?
If the return traffic flow is from the ATM or Fast Ethernet to the 10Mb Ethernet then you may be oversubscribing the Ethernet link, this can then cause output drops and possibly receive side buffering which in turn can slow the box down.
There's a good URL on CCO covering these topics which may be of some use identifying the cause:
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.