The following describes a single host and dual satellite topology.
Ports 1, 2, 3, and 4 are in the same LAG.
Hashing decisions on ports 1, 2, 3, and 4 are made at ingress on the host node.
Ports 1 and 2 can be reached only through side A.
Ports 3 and 4 can be reached only through side B.
If the active uplink on side A fails, the standby link on the side A becomes the new active uplink servicing the same satellite ports (ports 1 and 2).
If both uplinks on the same side fail, then the corresponding satellite node becomes isolated.
Figure: Single host, dual satellite displays an example of an SR OS host, satellite node, and access node.
Figure: Single host, dual satellite
