When a host device connects to multiple leaf nodes in a fabric through its interfaces, the
aggregation of these links is termed as an Ethernet Segment (ES). Each host is assigned an unique
10-octet Ethernet Segment Identifier (ESI) that identifies this aggregation of connected ports. The
assigned ESI value is used to discover other leaf nodes within the same ESI. This command navigates
into a new configuration mode within which all ES configuration must be done.
ESI values are not assigned to single homed nodes.
Ethernet and Port-Channel modes. Navigates into the Ethernet Segment configuration mode.
The command indicates that the current interface is a part of an Ethernet Segment and an Ethernet Segment Identifier (ESI) value must be assigned to it.
The [no] function removes the current interface from the ES.
The following example creates the Ethernet-Segment for configuring and generating the Ethernet Segment Identifier (ESI) value for a multi-homed client. In this example, two different interfaces are configured. For each interface, the Ethernet Segment mode is enabled.
SLX(config)# interface Ethernet 0/1
SLX(conf-if-eth-0/1)#ethernet-segment
SLX(conf-if-eth-0/1-es)#
SLX(config)# interface Port-channel 1
SLX(config-Port-channel-1)# ethernet-segment
SLX(config-Port-channel-1-es)#