Symptom

in the scenario where more than two VLAN tags are used on the VDSL interface performance on ISR1113 is highly impacted. It looks packets are software switched instead of hardware. VDSL CPU is highly utilized.

Conditions

When more than two tags(triple tagging) is used on VDSL interface.

Workaround

none. Do not use more than vlan tags on VDSL interface.

Further Problem Description