Dell Force10 E1200i FTOS Version 8.4.1.5 Configuration Guide for ExaScale - Page 957
MAC Addressing on S-Series Stacks, Adding a Standalone with a Lower MAC Address to a Stack- Before
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1 Management online S50N S50N 7.8.1.0 52 2 Member online S50V S50V 7.8.1.0 52 3 Member not present 4 Member not present 5 Member not present 6 Member not present 7 Member not present Stack#show system stack-unit 0 | grep priority Master priority : 0 Stack#show system stack-unit 1 | grep priority Master priority : 0 Stack#show system stack-unit 2 | grep priority Master priority : 0 Stack#show system stack-unit 0| grep "Burned In MAC" Burned In MAC : 00:01:e8:d5:ef:81 Stack#show system stack-unit 0 | grep "Burned In MAC" Burned In MAC : 00:01:e8:d5:ef:81 Stack#show system stack-unit 1 | grep "Burned In MAC" Burned In MAC : 00:01:e8:d5:f9:6f Stack#show system stack-unit 2 | grep "Burned In MAC" Burned In MAC : 00:01:e8:cc:cc:cc MAC Addressing on S-Series Stacks The S-Series has three MAC addressees: the chassis MAC, interface MAC, and null interface MAC. All interfaces in the stack use the interface MAC address of the management unit (stack manager), and the chassis MAC for the stack is the master's chassis MAC. The stack continues to use the master's chassis MAC address even after a failover. The MAC address is not refreshed until the stack is reloaded and a different unit becomes the stack manager. Note: If the removed management unit is brought up as a standalone unit or as part of a different stack, there is a possibility of MAC address collisions. In the first and second examples, a standalone is added to a stack. The standalone and the stack master have the same priority, but the standalone has a lower MAC address, so the standalone reboots. In the second and third examples, a standalone is added to a stack. The standalone has a higher priority than the stack, so the stack (excluding the new unit) reloads. Adding a Standalone with a Lower MAC Address to a Stack- Before STANDALONE BEFORE CONNECTION Standalone#show system brief Stack MAC : 00:01:e8:d5:ef:81 -- Stack Info -- Unit UnitType Status ReqTyp CurTyp Version Ports 0 Management online S50V S50V 7.8.1.0 52 1 Member not present 2 Member not present 3 Member not present 4 Member not present Stacking S-Series Switches | 957
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