MPLSoGRE Filtered Mirroring is a specialized version of Mirroring to GRE Tunnel and Filtered Mirroring in which

This is an addendum to the “IP in IP decapsulation” document.

GRE 4.23.0F

An introduction to Nexthop-groups can be seen in the Nexthop-Group section of eos.With this feature, IP packets matching a static Nexthop-Group route can be encapsulated with a GRE tunnel and forwarded.

This feature introduces the support for IPv4 ACL configuration under GRE and IPsec tunnel interfaces. The configured ACL rules are applied to a tunnel terminated GRE packet i.e. any IPv4-over-GRE-over-IPv4 that is decapsulated by the GRE tunnel-interface on which the ACL is applied or a packet terminated on IPsec tunnel

This feature introduces hardware forwarding support for IPv4 over IPv4 GRE tunnel interfaces on selected Arista

This feature introduces hardware forwarding support for IPv4 over IPv4 GRE tunnel interfaces on selected Arista

This feature will allow the user to select whether port mirror destinations of type GRE tunnel include the optional “key” field in the GRE header on certain platforms. The key field allows the user to uniquely identify a particular packet flow. The feature also allows the user to specify the value of the 32 bit key field.

This feature allows encapsulating (and decapsulating) L2 traffic from a given interface or subinterface over a GRE tunnel. An MPLS label is added to identify the ingress interface (similar to MPLS pseudowires) and the GRE tunnel is used to transport the packets to a remote endpoint.

MPLS-over-GRE encapsulation support in EOS 4.17.0 enables tunneling IPv4 packets over MPLS over GRE tunnels. This feature leverages next-hop group support in EOS. With this feature, IPv4 routes may be resolved via MPLS-over-GRE next-hop group to be able to push one MPLS label and then GRE encapsulate the resulting labelled IPv4 packet before sending out of the egress interface.

This feature introduces the support for OSPF routes over GRE tunnels under default as well as non-default VRFs. The feature is disabled by default. 

This feature introduces the support for OSPF routes over GRE tunnels under default as well as non default VRFs. The

This feature modifies the display format of “show interface Tunnel <num> counters” on hardware

GRE (Generic Routing Encapsulation) packet header has a Key extension which is used by Arista to carry packet

This feature terminates GRE packets on a TapAgg switch by stripping the GRE header and then letting the decapped packets go through the normal TapAgg path. With this feature, we can use an L3 GRE tunnel to transit tapped traffic to the TapAgg switch over an L3 network. That would widely extend the available use cases for TapAgg.

This feature introduces hardware forwarding support of IPv4 multicast traffic over IPv4 GRE tunnel interfaces in Arista Switches. Multicast source traffic can reach the receivers which are separated by an IP cloud which is not configured for IP multicast routing by utilizing a GRE tunnel.