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OCPBUGS-112633: Clarified values in nw-cluster-mtu-preparing.adoc #118921

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OCPBUGS-112633: Clarified values in nw-cluster-mtu-preparing.adoc #118921

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11 changes: 10 additions & 1 deletion modules/nw-cluster-mtu-preparing.adoc
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Original file line number Diff line number Diff line change
Expand Up @@ -55,7 +55,16 @@ ethernet.mtu=<mtu>
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where:

`<interface>`:: Specifies the primary network interface name.
`<interface>`:: Specifies the primary network interface name. Supported values include `bond0` and `br-ex`. VLANs, bridges, and bonded links inherit from this primary interface.
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[IMPORTANT]
====
Observe the following constraints when specifying the interface:

* Do not specify subordinate interfaces of a bond, such as `eth0` or `eth1`. Subordinate interfaces automatically inherit the MTU value set on the parent bond.
* The MTU of a VLAN interface must match the MTU of its parent interface, whether configured on a single physical interface or a bond. When changing the MTU of a VLAN, both the VLAN and parent interface must be updated.
====
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`<mtu>`:: Specifies the new hardware MTU value.
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