no negotiate auto

Answered Question
Apr 24th, 2008

Cisco 7204VXR router has "no negotiate auto" config'd on gig interface.

interface GigabitEthernet0/2

ip address x.x.195.245 255.255.255.248

duplex auto

speed auto

media-type rj45

no negotiation auto

Will this cause slowness across interface because this is disabled? Would there be any interface errors associated with this as well?

I'm trying to determine why it seems to take a little longer when I telnet to this particular router....delay when asking for login.

Thanks in advance for info.

I have this problem too.
0 votes
Correct Answer by mohammedmahmoud about 8 years 7 months ago

Hi,

The auto-negotiation option is only effective when using the GBIC media, it is used to enable the IEEE 802.1z Gigabit Ethernet (1000 Mbps) auto-negotiation protocol, thus the auto-negotiation feature is not supported when using the rj-45 media type (which is your case) and will be ignored if enabled, more over this feature has no relation with slowness or delay over the interface.

BR,

Mohammed Mahmoud.

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Correct Answer
mohammedmahmoud Thu, 04/24/2008 - 06:58

Hi,

The auto-negotiation option is only effective when using the GBIC media, it is used to enable the IEEE 802.1z Gigabit Ethernet (1000 Mbps) auto-negotiation protocol, thus the auto-negotiation feature is not supported when using the rj-45 media type (which is your case) and will be ignored if enabled, more over this feature has no relation with slowness or delay over the interface.

BR,

Mohammed Mahmoud.

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