Load balancing mechanism on different traffic types

The following table provides information about load balancing on different traffic types.

Table 1. Load balancing on different traffic types
Traffic type	Header field	Description
Layer 2/ Layer 3 packet load balancing	Ethernet DA, SA, Etype, Vlan-id IPv4/v6 dst IP, src IP L4 Src-Port, Dst-Port	Ethernet destination address, source address, ethernet type, VLAN ID load balancing IPv4/v6 destination address, source address load balancing Layer 4 source and destination port-based load balancing
VPLS/ VLL packet load balancing	CE to PE router traffic can use the following fields for load-balancing similar to the Layer 2/ Layer 3 traffic) Ethernet DA, SA, Etype, Vlan-id IPv4/v6 dst IP, src IP L4 Src-Port, Dst-Port PE to CE router traffic can use the following fields for load-balancing Customer (inner) ethernet DA, SA, Etype, Vlan-id Customer (inner) IPv4/v6 dst IP, Ipv4/Ipv6 src IP, protocol Customer (inner) L4 Src-Port, Dst-Port	CE to PE router traffic Ethernet destination address, source address, ethernet type, VLAN ID load balancing IPv4/v6 destination address, source address load balancing Layer 4 source and destination port-based load balancing PE to CE router traffic Customer ethernet destination and source address, ethernet type, VLAN ID load balancing Customer IPv4/v6 destination address, source address load balancing Customer Layer 4 source and destination port-based load balancing
MPLS LSR load balancing Hashing options support different MPLS transit hashing scenarios The hashing options are mutually exclusive. If one option is enabled, the other option will be disabled.	IP over MPLS traffic going over transit node	Extreme supports speculate-mpls option as default which speculates the IPv4/IPv6 header after the MPLS labels and use the fields for hashing. This hashing scenario is handled by the lag hash speculate-mpls enable command in the global mode.
L2VPN (VPLS/VLL) traffic The hashing options are mutually exclusive. If one option is enabled, the other option will be disabled.	L2VPN tagged mode with IPv4 inner payload	This scenario is handled using the lag hash speculate-mpls inner-ip-tag command in the global mode. Some sections of the IPv4 source and destination address fields are also used for load-balance hashing.
	L2VPN raw mode with IPv4 inner payload	This scenario is handled using the lag hash speculate-mpls inner-ip-raw command. Some sections of the IPv4 source and destination address fields are also used for load-balance hashing.
	L2VPN tagged mode with IPv6 inner payload	This scenario is handled using the lag hash speculate-mpls inner-ipv6-tag command. Some sections of the IPv6 source and destination address fields are also used for load-balance hashing.
	L2VPN raw mode with IPV6 inner payload	This scenario is handled using the lag hash speculate-mpls inner-ipv6-raw command. Some sections of the IPv6 source and destination address fields are also used for load-balance hashing.
SCTP traffic over VxLAN handling on SLX-9740/Extreme 8820	SCTP over VxLAN traffic terminating on Border Leaf	This scenario is handled using the lag hash hdr-start term command. The Terminated VxLAN header UDP Source Port are also included for load-balance hashing. Note: Disabling the MPLS labels using load-balance hash mpls all-labels command while lag hash hdr-start term enabled will cancel the Force Termination Header Hashing.