Shaping GigE Interface to OC-12 Pipe

Answered Question
Mar 3rd, 2010
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We have an OC-12 circuit (622Mbps) connected to our router's gigE interface (inter g1/0). Although the physocal interface is 1000Mbps the actual line speed is 622Mbps. If I get an offer load of 1 gig of data going through the interface, only 622Mb will be processed, while the remaining 378Mb will get queued or dropped. Does anyone have a shaping "configuration" that will shape/buffer the traffic once it it's 622Mbps.

My primary goal is to prevent ouput drop on the gigE interface as much possible. Thanks in advance.

Correct Answer by Giuseppe Larosa about 7 years 1 month ago

Hello David,

be aware that outbound shaping is not supported on all platforms for example on a standard GE port of a C6500/7600 just to make an example.


It is supported on routers and on WAN oriented modules of C6500/7600


Hope to help

Giuseppe

Correct Answer by Jerry Ye about 7 years 2 months ago

Please specify what type of router? Shaping config should be similar to the following


policy-map SHAPE

class class-default

  shape average 622000000


interface xxxx

service-policy out SHAPE


HTH,

jerry

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Correct Answer
Jerry Ye Wed, 03/03/2010 - 18:11
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Please specify what type of router? Shaping config should be similar to the following


policy-map SHAPE

class class-default

  shape average 622000000


interface xxxx

service-policy out SHAPE


HTH,

jerry

Correct Answer
Giuseppe Larosa Thu, 03/04/2010 - 05:11
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Hello David,

be aware that outbound shaping is not supported on all platforms for example on a standard GE port of a C6500/7600 just to make an example.


It is supported on routers and on WAN oriented modules of C6500/7600


Hope to help

Giuseppe

davidhuynh5 Thu, 03/04/2010 - 14:45
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Thanks Giuseppe. I found that out today when I tried to configure it on an interface and it can back
"not supported on this interface" :-(

Jerry Ye Thu, 03/04/2010 - 15:14
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  • Cisco Employee,

Hi David,


That was my first question to you initially "Please specify what type of router?".


Regards,

jerry

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