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rmv72
Beginner

Tx-ring-limit

Hello,

how monitor hardware queue on ethernet interface (after applying tx-ring-limit command)?

Regards,

Mike

3 REPLIES 3
Fabrizio Pedracini
Cisco Employee

Hi Mike,

you can use "show controller " and you will see the rx/tx ring limit set on that interface. Bear in mind that on most of the platforms the ethernet interfaces tx/rx rings values are hardcoded and thought the command is accepted, it won't actually change anything.

hope this helps,

Fabrizio

Hi Fabrizio,

the output of "sh contr f0/0" is not helpful...

Here output from 2811-

#sh contr f0/0          

Interface FastEthernet0/0

Hardware is MV96340



Tx Rings

--------

  Tx Ring 0                         Tx Ring 1

  - size        = 128              - size        = 0        

  - head        = 109              - head        = 0        

  - tail        = 109              - tail        = 0        

  - usedtxds    = 0                - usedtxds    = 0        

  - framecnt    = 0                - framecnt    = 0        

  - shadow      = 0x44AD3388        - shadow      = 0x00000000

  - ring        = 0x0F5AA3E0        - ring        = 0x00000000

  - ring_malloc = 0x3F5AA3E0        - ring_malloc = 0x00000000

  Tx Ring 2                         Tx Ring 3

  - size        = 0                - size        = 0        

  - head        = 0                - head        = 0        

  - tail        = 0                - tail        = 0        

  - usedtxds    = 0                - usedtxds    = 0        

  - framecnt    = 0                - framecnt    = 0        

  - shadow      = 0x00000000        - shadow      = 0x00000000

  - ring        = 0x00000000        - ring        = 0x00000000

  - ring_malloc = 0x00000000        - ring_malloc = 0x00000000

  Tx Ring 4                         Tx Ring 5

  - size        = 0                - size        = 0        

  - head        = 0                - head        = 0        

  - tail        = 0                - tail        = 0        

  - usedtxds    = 0                - usedtxds    = 0        

  - framecnt    = 0                - framecnt    = 0        

  - shadow      = 0x00000000        - shadow      = 0x00000000

  - ring        = 0x00000000        - ring        = 0x00000000

  - ring_malloc = 0x00000000        - ring_malloc = 0x00000000

  Tx Ring 6                         Tx Ring 7

  - size        = 0                - size        = 0        

  - head        = 0                - head        = 0        

  - tail        = 0                - tail        = 0        

  - usedtxds    = 0                - usedtxds    = 0        

  - framecnt    = 0                - framecnt    = 0        

  - shadow      = 0x00000000        - shadow      = 0x00000000

  - ring        = 0x00000000        - ring        = 0x00000000

  - ring_malloc = 0x00000000        - ring_malloc = 0x00000000

Port Stopped: N


Where to find info about hardcoded tx/rx rings models?

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Believe "size = 128" might be what you're seeking, under Tx Ring 0.