How EtoPPP and EtoFR handle IP packets
EtoPPP handles an IP packet as follows:
When an Ethernet interface in the EtoPPP translation table receives an IP packet, the device finds the outgoing interface by looking up the EtoPPP translation table, encapsulates the IP packet with PPP, and then forwards the PPP-encapsulated IP packet out of the PPP interface.
When a PPP interface in the EtoPPP translation table receives an IP packet, the device finds the outgoing Ethernet interface by looking up the EtoPPP translation table, encapsulates the IP packet with Ethernet, and then forwards the Ethernet-encapsulated IP packet out of the Ethernet interface.
EtoFR works in the same way as EtoPPP except the link layer encapsulation is converted between Ethernet and FR.
EtoPPP and EtoFR only apply to IP packets. Configuring an interface to participate in EtoPPP or EtoFR translation can result in dropping of non-IP data packets on the interface.
Hewlett Packard Enterprise recommends not assigning IP addresses to the interfaces used in the EtoPPP or EtoFR translation table, because the IP address configuration not take effect.
To get the statistics about IP packets on a virtual or logical interface in the EtoPPP or EtoFR translation table, use the display command for the EtoPPP or EtoFR translation table rather than that for the virtual or logical interface.
The interfaces in the EtoPPP or EtoFR translation table do not support QoS in the inbound direction. In the outbound direction, they support only rate limiting on the physical interfaces.