Dell PowerEdge MX7000 EMC OpenManage Enterprise-Modular Edition Version 1.20.1 - Page 83

Restrictions and guidelines, Recommended connection order

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Restrictions and guidelines The following restrictions and guidelines are applicable when building a scalable fabric: ● Mixing switch types in the same fabric is not supported. For example: MX9116n in slot A1 and MX5108n in slot A2 ● Mixing switch types across fabrics is supported. For example: MX9116n in slots A1& A2 and MX5108n in slots B1 & B2 ● All FSE and FEM IOMs in a scalable fabric must be in the same OME-Modular MCM group. FEMs in a chassis in MCM group 1 cannot be connected to FSEs in a chassis in MCM group 2. The following restrictions are applicable when implementing a scalable fabric in both fabric slot A and fabric slot B: ● IOM placement for each scalable fabric must be the same within the same chassis. For example, if the FSE for the first scalable fabric is in Slot A1, then the second FSE must be in slot B1 in the same chassis, and so on. ● For chassis that only contain FEMs, all four FEMs must connect to the same chassis with the FSEs. The fabric B FEMs cannot be connected to FSEs in a different chassis as the fabric A FSEs. Recommended connection order Any QSSFP28-DD port on the MX9116n can be used for any purpose. The table below describes the recommended port order for connecting chassis with Fabric Expander Modules (FEMs) to the FSE. The table contains references IOMs in fabric A, but the same guidelines apply to IOMs in fabric B. Table 14. Recommended port order for connecting FEM to FSE Chassis FSE Port (Phys Port) 1 & 2 FSE Port 1 (17/18) 3 FSE Port 7 (29/30) 4 FSE Port 2 (19/20) 5 FSE Port 8 (31/32) 6 FSE Port 3 (21/22) 7 FSE Port 9 (33/34) 8 FSE Port 4 (23/24) 9 FSE Port 10 (35/36) 10* FSE Port 6 (25/26) *-By default, the port group 10 is not configured to support a FEM. If you want to connect a FEM to this port, use the OME Modular interface to set the port mode to Fabric Expander. NOTE: The port groups, 6, 11, and 12 (physical ports 27/28, 37/38, 39/40), can be used for additional uplinks, ISLs, rack servers, and so on. MX Scalable Fabric architecture 83

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Restrictions and guidelines
The following restrictions and guidelines are applicable when building a scalable fabric:
●
Mixing switch types in the same fabric is not supported. For example: MX9116n in slot A1 and MX5108n in slot A2
●
Mixing switch types across fabrics is supported. For example: MX9116n in slots A1& A2 and MX5108n in slots B1 & B2
●
All FSE and FEM IOMs in a scalable fabric must be in the same OME–Modular MCM group. FEMs in a chassis in MCM group
1 cannot be connected to FSEs in a chassis in MCM group 2.
The following restrictions are applicable when implementing a scalable fabric in both fabric slot A and fabric slot B:
●
IOM placement for each scalable fabric must be the same within the same chassis. For example, if the FSE for the first
scalable fabric is in Slot A1, then the second FSE must be in slot B1 in the same chassis, and so on.
●
For chassis that only contain FEMs, all four FEMs must connect to the same chassis with the FSEs. The fabric B FEMs
cannot be connected to FSEs in a different chassis as the fabric A FSEs.
Recommended connection order
Any QSSFP28-DD port on the MX9116n can be used for any purpose. The table below describes the recommended port order
for connecting chassis with Fabric Expander Modules (FEMs) to the FSE. The table contains references IOMs in fabric A, but
the same guidelines apply to IOMs in fabric B.
Table 14. Recommended port order for connecting FEM to FSE
Chassis
FSE Port (Phys Port)
1 & 2
FSE Port 1 (17/18)
3
FSE Port 7 (29/30)
4
FSE Port 2 (19/20)
5
FSE Port 8 (31/32)
6
FSE Port 3 (21/22)
7
FSE Port 9 (33/34)
8
FSE Port 4 (23/24)
9
FSE Port 10 (35/36)
10*
FSE Port 6 (25/26)
*—By default, the port group 10 is not configured to support a FEM. If you want to connect a FEM to this port, use the OME -
Modular interface to set the port mode to Fabric Expander.
NOTE:
The port groups, 6, 11, and 12 (physical ports 27/28, 37/38, 39/40), can be used for additional uplinks, ISLs, rack
servers, and so on.
MX Scalable Fabric architecture
83