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3825 flow-control

 

 

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jurwiller at americanbb

Aug 3, 2012, 2:18 PM

Post #1 of 2 (736 views)
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3825 flow-control

How do I disable flow-control on the chassis Gig Ethernet ports on a
3825? By default, they are XON for both input and output.



James Urwiller

Lead Internet Services Technician / Network Engineer

CCNA 11567125

American Broadband

402-426-6257 - Office

402-278-1875 - Cell

402-426-6273 - Fax

jurwiller [at] americanbb <mailto:mjurwiller [at] americanbb>



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Andrew.Brant at datacom

Aug 6, 2012, 11:18 PM

Post #2 of 2 (674 views)
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Re: 3825 flow-control [In reply to]

Snippet from the 2800 series software configuration guide:

Both the RJ-45 (copper) and SFP (fiber) modes of operations suppot flow control. This means that during congestion conditions, pause frames are sent to the far end by the Media Access Control (MAC) hardware. Also, the MAC hardware will react to the pause frames received. There is no way in current MAC hardware to track the number of pause frames received or sent.

Flow control is on by default

Currently, there is no command to turn off the flow control capability for any of the Gigabit Ethernet ports in any of the RJ45 or SFP modes.

http://www.cisco.com/en/US/docs/routers/access/1800/1841/software/configuration/guide/b_setup_ps5854_TSD_Products_Configuration_Guide_Chapter.html#wp42944


Kind regards,

Andrew Brant                                                   CCIE #14715 (R&S/Security/SP)

Senior Network Engineer - DC Team | Datacom  |  Level 1, 190 City Road, South Melbourne
Email: andrew.brant [at] datacom |  Web:  www.datacom.com.au
Ph: +61-3-9626 -9683  |  Mob: +61-401-266-507  |  Fax: +61-3-9626-9699


-----Original Message-----
From: cisco-nsp-bounces [at] puck [mailto:cisco-nsp-bounces [at] puck] On Behalf Of James Urwiller
Sent: Saturday, 4 August 2012 7:19 AM
To: cisco-nsp [at] puck
Subject: [c-nsp] 3825 flow-control

How do I disable flow-control on the chassis Gig Ethernet ports on a 3825? By default, they are XON for both input and output.



James Urwiller

Lead Internet Services Technician / Network Engineer

CCNA 11567125

American Broadband

402-426-6257 - Office

402-278-1875 - Cell

402-426-6273 - Fax

jurwiller [at] americanbb <mailto:mjurwiller [at] americanbb>



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