Cisco 837 speed and duplex problem

I have one Cisco 837 connected to Cisco 1900 and Cisco 2924XL. When i set the speed and duplex to 10 full duplex or 100 full duplex i 837 the fastethernet interface is going down. Its working if i set speed and duplex to auto i 837 router. I have 12.4(4)T release on my Cisco 837.

Hi
AFAIK 1900 doesnt support auto negotiation so better manually hardcode the speed and duplex to 10/half or 10/full on the port which is connecting to 1900 and
100/full to the port which is connecting to 2924 coz it does support 100/full.
regds

Similar Messages

Problems setting speed and duplex

We have installed a 4510R router as well as a 3560 10/100 switch. When the speed and duplex are hard coded to 100 full on both switches the connection breaks. When set to auto on both ends, link stays up. Any help would be greatly appreciated.

This could be a symptom of a bad or poorly terminated cable.
If you hard-code the speed to 10 and or the duplex to half, does it stay up?
If this is a handmade cable, try replacing it with a known-good commercial cable. If all you have available is hand-made cables, then verify that the pairs are p0inned-out according to the EIA/TIA standard (left-to-right, clip down:
Orange-white,
Orange,
Green-white,
BLUE,
White-blue,
Green,
White-brown,
Brown
*OR*
White-green,
Green,
White-orange,
BLUE,
White-blue,
Orange,
White-brown,
Brown
If your cables are not pinned-out according to the spec, the ACR (attenuation-to-crosstalk ratio) is blown and the cable cannot carry full-duplex high-speed traffic (or it might work, but not without a lot of errors .... which is why the interface will downshift to a slower speed or half duplex).
Good Luck
Scott
A router-switch connection should be a straight-through cable.

Wrong speed and duplex negotiation on t60 PRO/1000 PL

I have a 1952-CTO with last version of driver installed (9.7.251.0) on Intel PRO/1000 PL adapter.
The problem is that the pc always miss the automatic negotiation for speed and duplex with very different kind of ethernet switches for all 10,100 and 1000 Mb/s connections (tried with cisco, hp, linksys, nortel switches).
I can only fix the speed and duplex on the pc and on the switches to optimize the speed.
What can i do to use an efficient automatic negotiation?
Thanks to all in advance. Ulisse-Italy

Please do not post more than about 50 lines of console logs or output from an Application crash at a time. No one can make it through those.
If you had a kernel panic, those are Full of good information and should be posted in their entirety. They are stored, and can be read back and posted using this article:
How to log a kernel panic

Can you hard code the speed and duplex on lightweight access points

I have a client that want to set the spped and duplex on the switch port. Is there a way you can configure the fastethernet port on a lightweight access point for speed and duplex.

Try this step
configure terminal
Enter global configuration mode.
Step 2
interface fastethernet0
Enter configuration interface mode.
Step 3
speed {10 | 100 | auto}
Configure the Ethernet speed. Cisco recommends that you use auto, the default setting.
Step 4
duplex {auto | full | half}
Configure the duplex setting. Cisco recommends that you use auto, the default setting.
Step 5
end
Return to privileged EXEC mode.
Step 6
show running-config
Verify your entries.
Step 7
copy running-config startup-config

LWAPP ap speed and duplex

Is it possible to set the ap speed and duplex once it has joined a controller as there is nowhere on the wlc to do this.
Is there a command available after I give the ap a username and passsword with
config ap username <username> password <password> <ALL | AP Name>

Hi Pete,
Here you go my friend :)
Q. How do I set the duplex settings on the Wireless LAN Controller (WLC) and the Lightweight Access Points (LAPs)?
A. Cisco Wireless products work best when both speed and duplex are autonegotiated, but you do have the option to set the duplex settings on the WLC and LAPs. In order to set the AP speed/duplex settings, you can configure the duplex settings for the LAPs on the controller and then, in turn, push them to the LAPs.
configure ap ethernet duplex speed is the command to set the duplex settings through the CLI .This command is supported with versions 4.1 and later only.
In order to set the duplex settings for the WLC physical interfaces, use the config port physicalmode {all | port} {100h | 100f | 10h | 10f} command.
This command sets the specified or all front-panel 10/100BASE-T Ethernet ports for dedicated 10 Mbps or 100 Mbps, half-duplex or full-duplex operation. Note that you must disable autonegotiation with the config port autoneg disable command before you manually configure any physical mode on the port. Also, note that the config port autoneg command overrides settings made with the config port physicalmode command. By default, all ports are set to auto negotiate.
From this good Q&A doc;
http://www.cisco.com/en/US/products/ps6366/products_qanda_item09186a00808b4c61.shtml
Hope this helps!
Rob

ILOM network speed and duplex

Is there a way to set the speed and duplex config on an X4100 ILOM network management port? We are doing some tests and installing an OS across the network using the remote control capabilities and mounting an ISO to boot from. I have noticed that it is only capable of about 2-3mbps throughput max. Since it is a 10/100 NIC, I had hoped for better speeds. We will eventually be looking at integrating N1 Provisioning, but want to do a few initial test systems this way.
I am connected to a port on a Cisco 3548 switch and it is set to 100 Full Duplex. I usually set the NIC on a server to match the speed/duplex on the switch port to reduce any issues with mismatched settings.

Have you tried to let the ILOM and the Cisco switch auto-negotiate? I've seen issues with forcing one side and not the other.
I can't find a way to force the speed/duplex via the IPMI Configuration in BIOS on a x4100 M2 that's in front of me. Not sure about CLI on ILOM...
--Ryan

Lan speed and duplex negotiation

hello
when you have speed and duplex set manualy would this stop the negotiation with the other site ?

thank you for the reply
i had the folowing problem which is solved
router with manual setting speed 100, duplex full
conected to an uknown switch witth increasing input errors.
By changing all setting to auto,
speed and auto duplex got the same settings 100 full duplex but errors disapeared
My explanation to this (I have no visbility to the switch )by schanging settings to auto, negotiation started and switch changed the setting to 100 full from probably default 100 half.
and from here comes my question would be by setting the ethernet to manual will disable nogatiations ?

Ethernet speed and duplex configuration in IP Phone

Hi
We need to disable ethernet auto-negotiation in about 1000 IP Phones, because many PCs that will be connected to them fail to properly auto-negotiate (old ethernet cards). We will configure them as 100Mbps/Full Duplex.
The problem: We don´t find any related place to configure this in CUCM Web Admin, so we just use the settings interface in the phone itself. That isn´t scalable to 1000 phones.
Does any one know some place in web admin to set speed and duplex in phones?? or maybe some 3rd party software??
Thanks and regards
Cristian Jara

The setting on the device configuration page I think you're looking for is called "Switch Port Remote Configuration", default is disabled, other options are Auto / 10 Half / 10 Full / 100 Half / 100 Full / 1000 Full. If this is what you're looking for the Bulk Administration Tool (BAT) can be used to change this in bulk on all your phones.

Nexus 2248TP port speed and duplexing

Hello Forum Team!
In order to configure the port speed and duplexing (change to 100Mbps/Full-duplex from auto mode) on a Nexus 2248TP interface, does the port needs to be down,.i.e, no link?
Thanks in advanced for your support!

Hello and thanks for reply;
I was trying to configure port speed and duplexing on a 2148. This FEX model only works at 1000Mbps as I later found out on the documentation.
Thanks again for your support.

Changing the speed and duplex setting on the WRT54GS

Can I manually change the speed and duplex setting on the internet port to 10Mb full on a Linksys WRT54GS router?

You can change the speed on the computer connected to the router's ethernet port...not on the router.

Configuring speed and duplex settings of monitoring NIC under IDS v4.1

Good day,
While I know that, unlike IPS v5.0 where you can configure interface-specific settings via IDM, you cannot adjust interface settings using IDM in v4.1.
I was wondering if it was possible to set these things, however, via the service account?
Can someone share their suggestions, supported or not, on how to do this? Is it just a simple Google for "NIC settings Red Hat Linux 9" or is it more involved?
Thanks in advance to any who reply,
Alex Arndt

What about a situation where you will be connecting the monitoring port of a v4.1 sensor to a passive TAP that is inline on a link with hard-coded interfaces?
It is my understanding that any device connected to a passive TAP, that is one that has two network ports and two monitoring ports (one for each TX pair), must be configured the same. So, if the two devices at either end of the tapped line are forced to specific speed and duplex settings, so should the NIC cards on the device(s) connected to the monitoring ports of the TAP.
Given this, can you provide the best practice for a v4.1 sensor? Could you also provide specifics on how to force-set the speed and duplex on the monitoring NIC, not the command and control interface, in such a way that it will survive a reboot?
Thanks in advance,
Alex Arndt

79X1 Port Speed and Duplex

I've been trying to figure out how to get the Network and PCPort Speed And Duplex "actuals" from 7941 and 61s. On the 7940s and 60s this was available via the PortInformationX? URL but other than sending keys to the phone and getting a screenshot (modeinfo) I haven't been able to find the right URL/URI for the 79X1 family.
Any help will be greatly appreciated!
Thanks
LT

Hello,
as I understand it, NLP is just a basic Ethernet connectivity check used for 10BaseT (non-autonegotiate) devices, while FLP is an enhanced version of NLP, used in autonegotiation. Whenever autonegotiation is involved, FLP's are being sent. When a FLP capable device detects NLP's from a 10BaseT device, it stops sending FLP's and reverts to NLP's.
Check the following document for a detailed explanation:
Advanced Ethernet: Understanding link, auto-negotiation and auto-sense
http://inetd.com/CriticalNetworks/resources/index.html
HTH,
GP

WRVS4400N Hard Set WAN port speed and duplex???

Does anyone know if there is a way to hard set the wan port speed and duplex on a WRVS4400N V2 router?
Any Help greatly appreciated..
thanks,

Michael
I believe that these statements are true.
Auto negotiation is good when both sides are configured to negotiate. When one side does not negotiate the other side should not try to negotiate.
HTH
Rick

Touchpad Speed and Finder problem

Alright, I'm using a Penyrn baseline Macbook Pro that I picked up when it first came out. I'm loving it. It's great. So far, I've had a few big problems with it though.
1) When I've been playing some graphic intensive games, like World of Warcraft, my Finder and dockbar freezes. Like, nothing would work, I couldn't alt-tab and while my game would work, I'd have to reset the entire computer.
2) Again, while playing World of Warcraft, sometimes my Touchpad speed would get reset down to a slower setting. When I try and change it, it won't stay and often whenever I alt-tab between programs, it'll go back to the slower setting.
3) Is there any place, Apple Store and what not that I could get it in for a check up? There's a few smaller things I feel IN the keyboard that's a bit defective and pixel problems.
thanks!

This will need more testing, which is outside of the scope of this forum. Its the upload speed which seems to be the issue, so there may be some faulty equipment.
I have asked a moderator to provide assistance, they will post an invite on this thread.
They are the only BT employees on this forum, and are a UK based team of people, who take personal ownership of your problem.
Once you get a reply, make sure that you are logged into the forum, then click on their name, you will see a screen like this. Click on the link as shown below.
Please do not send them a personal message, as they cannot deal with service issues that way.
For your own security, do not post any personal details, on this forum. That includes any tracking number you are give.
They will respond either by phone or e-mail, when its your turn in the queue.
Please use the tracked e-mail, to reply, not via the forum. Thanks
This is the form you should see when you click on the link. If you do not see this form, then you have selected the wrong link.
When you submit the form, you will receive an enquiry number, so please keep a note of it
There are some useful help pages here, for BT Broadband customers only, on my personal website.
BT Broadband customers - help with broadband, WiFi, networking, e-mail and phones.

EA6500 manually select speed and duplex for WAN port

Is there any way (hidden settings?) to manually select speed or duplex for WAN port on EA6500? I'm using EA6500 with Genexis HRG1044 (FTTH) and the latter has known issues with upload speed when local device is connected on gigabit. It seems that both EA6500 and Genexis HRG1044 only support autonegotiation and that always results in gigabit which results in poor upload speeds over the internet. Placing 100 Mbps switch between EA6500 and Genexis HRG1044 does the trick but I was wondering if it can be done without it. BTW, my internet speed is only 100/100 Mbps anyways.
Solved!
Go to Solution.

@discoHR If you don't mind me asking, for what purpose do you want to adjust the speed on the WAN port of the EA6500? Is it to increase the upload speed? I'm just spitballing, but I don't think there's any "hidden setting" to adjust it on the EA6500.

Cisco 837 speed and duplex problem

Similar Messages

Maybe you are looking for