04-30-2013 04:33 PM - edited 03-07-2019 01:07 PM
We currently have the interfaces configured with 'mtu 9216'. Now we are adding a policy-map type network for the data and iSCSI classes. Where do we set mtu - see example
interface e8/1
mtu 9216 << with this set, do we need to specify mtu in the policy-map?
policy-map type network-qos CONVERGED-DATA-ISCSI-NQ
class type network-qos C-NQ-DATA-DROP
congestion-control tail-drop
mtu 9216 << Is this needed
class type network-qos C-NQ-ISCSI-NODROP
pause
mtu 9216 << Is this needed
Is one method of setting mtu prefered over the other?
thanks
Peter
04-30-2013 04:39 PM
You don't need a policy-map to set the mtu, just the mtu command:
mtu 9216
verify with sh int ex/xx
HTH
04-30-2013 04:46 PM
Thanks Reza.
I configured:
policy-map type network-qos CONVERGED-DATA-ISCSI-NQ
class type network-qos C-NQ-DATA-DROP
congestion-control tail-drop
class type network-qos C-NQ-ISCSI-NODROP
pause
But a show:
sh policy-map type network-qos CONVERGED-DATA-ISCSI-NQ
Type network-qos policy-maps
============================
policy-map type network-qos CONVERGED-DATA-ISCSI-NQ
class type network-qos C-NQ-DATA-DROP
congestion-control tail-drop
mtu 1500
class type network-qos C-NQ-ISCSI-NODROP
pause
mtu1500
So configuring the policy-map defaults mtu to 1500 if you don't specify a specific mtu.
What takes preference, the policy-map mtu or interface mtu?
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