Cisco Cisco IOS Software Release 12.0(13)S7
Behavioral Change for Buffer Recarving
Behavioral Change to Command “no bfrp carve-level”
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Behavioral Change for Buffer Recarving
Behavioral Change to Command “no bfrp carve-level”
This section explains the behavioral change to the command “no bfrp carve-level”. It contains the
following topics:
following topics:
•
•
Old Behavior
Traversing back from carve level 0 or 1 to the default carve using the command “no bfrp carve-level”,
restores to the default carving mechanism without performing any carving. Only future MTU changes
trigger recarve of both Tofab and From Fab according to their
restores to the default carving mechanism without performing any carving. Only future MTU changes
trigger recarve of both Tofab and From Fab according to their
New Behavior
Executing the command “no bfrp carve-level”, triggers a carving on both ToFab and FromFab
direction according to the default carving mechanism. The feature change is that if you traverse back
from carve-level 0 or 1 to default carve mechanism, using the command “no bfrp carve-level”,
recarving takes place. Below is the output showing the new behavior. It triggers router wide recarving,
suggested to use on a maintenance window (MW).
direction according to the default carving mechanism. The feature change is that if you traverse back
from carve-level 0 or 1 to default carve mechanism, using the command “no bfrp carve-level”,
recarving takes place. Below is the output showing the new behavior. It triggers router wide recarving,
suggested to use on a maintenance window (MW).
Step 1
The following example shows how to view the current carve-level 0 or 1 configured on the router.
Execute the following command from Global configuration mode.
Execute the following command from Global configuration mode.
GSR-12012(config)# do show running-config | i carve
bfrp carve-level 0
Step 2
The following example shows how to traverse back from carve-level 0 or 1 to the default carve. The
command output message indicates that there will be recarving of buffers.
command output message indicates that there will be recarving of buffers.
GSR-12012(config)# no bfrp carve-level
GSR-12012(config)#
05:05:42: %RP-6-CARVE_BUF: Carve Level change may recarve the buffers << indicative
message
GSR-12012(config)#end
GSR-12012(config)#end
GSR-12012#
05:08:51: %SYS-5-CONFIG_I: Configured from console by console
Step 3
The following example shows how to view the current global distribution list and the carves configured
at various slots on the router. Execute the following command from Exec mode.
at various slots on the router. Execute the following command from Exec mode.
GSR-12012# show controllers queues <<< buffers are recarved according to default carve
mechanism
Global MTU information:
Max MTU data size = 4592
MTUs considered in SDRAM buffer carving:
Index MTU Data Size
0 4592
Input SDRAM buffer distribution = default :
Index Data Size Min Data Size Percent Buffers Fixed?
0 80 1 50
yes