07-07-2008 06:58 AM - edited 03-06-2019 12:02 AM
I have connected cisco 7500 router with a cisco switch 2950. The problem i am facing is that we can't running the link with full duplex . The cisco switch is supporting 100 Mbps, 100Base TX and the Router(7500) FastEthernet support 100Mbps, 100Base TX/FX
When I enable the link as full duplex in router the Switch interface(the connected port ) is goes down.(switch port already enabled as full duplex)
But when i connect the same switch with another
Cisco 3745 router , it is working as full duplex link.
It may pointed that the Cisco 7500 router has no "auto" negotiable option as in cisco 3745 router has
"auto" negotiable option( full/half) there.
pls help me.
pls help me.
Regards,
Rajib
07-11-2008 06:18 AM
Be careful that some modes (on, nonegotiate, off) explicitly specify in which state the port will end up. A bad configuration can lead to a dangerous, inconsistent state in which one side is trunking and the other side is not.
07-11-2008 07:10 AM
It is a good rule of thumb to not allow routers, switches, servers to use AUTO speed/duplex negotiation.
(specifically for these types of weird problems your facing..among others)
Set your 7500 to 100mbs/Full Duplex statically with the interface commands:
speed 100
duplex full
As you already have your switch at 100/Full statically, you should set the router statically as well.
07-11-2008 07:50 AM
Cross over cable or straight through cable?
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