04-14-2013 12:53 PM - edited 03-04-2019 07:35 PM
Hello,
I have autonegotiation disable on my interfcae what should be duplex setting on other end?
Router#sh run int Gi0/3/0
Building configuration...
Current configuration : 334 bytes
!
interface GigabitEthernet0/3/0
dampening
bandwidth 1000000
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
load-interval 30
carrier-delay msec 75
media-type sfp
no negotiation auto
cdp enable
04-14-2013 12:56 PM
On a gigabit interface you should do this:
Speed 1000
Duplex full
Hope this helps
Sent from Cisco Technical Support iPhone App
04-14-2013 01:02 PM
hello Bilal,
Thanks for reply.
My Question was I have ASR 1000 router and my router WAN inteface has disable the auto negotiantion so what should be other end router interface setting auto negotiation as bydefult or disable the auto negotiation or re-enable using command
negotiation auto
Please guide....
04-14-2013 01:08 PM
Hello, I have ASRs, and I normally manually configure both to be
Speed 1000
Duplex full
Just to really nail it and get it right set both sides to be like this.
I did find this:
Fast Ethernet and Gigabit Ethernet interfaces use a connection-setup algorithm called autonegotiation. Autonegotiation allows the local and remote devices to configure compatible settings for communication over the link. Using autonegotiation, each device advertises its transmission capabilities and then agrees upon the settings to be used for the link.
For the Gigabit Ethernet interfaces on the Cisco ASR 1000 Series Aggregation Services Router, flow control is autonegotiated when autonegotiation is enabled. Autonegotiation is enabled by default.
The following guidelines should be followed regarding autonegotiation:
•If autonegotiation is disabled on one end of a link, it must be disabled on the other end of the link. If one end of a link has autonegotiation disabled while the other end of the link does not, the link will not come up properly on both ends.
•Autonegotiation is not supported on the 10-Port Gigabit Ethernet SPA on the Cisco ASR1000-SIP10.
•Flow control is enabled by default.
•Flow control will be on if autonegotiation is disabled on both ends of the link.
Hope this helps
Sent from Cisco Technical Support iPhone App
Message was edited by: Bilal Nawaz
05-06-2013 11:03 PM
My Question was I have ASR 1000 router and my router WAN inteface has disable the auto negotiantion so what should be other end router interface setting auto negotiation as bydefult or disable the auto negotiation or re-enable using command
What kind of SFP are you using? If you are using Fibre Optics you CANNOT set the speed and duplex.
If you are using GLC-T, then WHY do you want to DISABLE autonegotiation.
03-17-2019 08:40 AM
Asr1001x (glct -auto neg) <==> speed 10mb and duplex forced in remote router (no auto neg)......link will come up or not?
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