The following figure shows a topology using a pair of Dell PowerSwitch S5232F-ON switches as upstream switches. This section walks through configuring the S5232F-ON and validating the configuration, but any SmartFabric OS10 switches can be used. This section details configuration of the S5232F-ON as well as validation of the configuration.
Dell PowerSwitch S5232F-ON configuration
This section outlines the configuration commands issued to the Dell PowerSwitch S5232F-ON switches. The switches start with their factory default settings as indicated in the Reset SmartFabric OS10 switch to factory defaults section.
spanning-tree {vlan vlan-id priority priority-value}
. Set the external switch to the lowest priority-value to force its assignment as the STP root bridge. For additional details on using STP with OS10 switches, see the Dell OS10 SmartFabric User Guide. There are four steps to configure the S5232F-ON upstream switches:
- Set the switch hostname and management IP address.
- Configure the VLT between the switches.
- Configure the VLANs.
- Configure the port channels to connect to the MX switches.
Use the following commands to set the hostname, and to configure the OOB management interface and default gateway.
S5232F-ON Leaf 1 | S5232F-ON Leaf 2 |
| |
spanning-tree {vlan vlan-id priority priority-value}
command to set the bridge priority for the upstream switches. The bridge priority ranges from 0 to 61440 in increments of 4096. For example, to make S5232F-ON Leaf 1 as the root bridge for VLAN 10, enter the command spanning-tree vlan 10 priority 4096. Configure the VLT between switches using the following commands. VLT configuration involves setting a discovery interface range and discovering the VLT peer in the VLTi. vlt-domain configures the peer leaf-2 switch as a back up destination.
S5232F-ON Leaf 1 | S5232F-ON Leaf 2 |
| |
Configure the required VLANs on each switch. In this deployment example, the VLAN used is VLAN 10.
S5232F-ON Leaf 1 | S5232F-ON Leaf 2 |
| |
Configure the port channels that connect to the downstream switches. The LACP protocol is used to create the dynamic LAG. Trunk ports allow tagged VLANs to traverse the trunk link. In this example, the trunk is configured to allow VLAN 10.
S5232F-ON Leaf 1 | S5232F-ON Leaf 2 |
| |
Dell PowerSwitch S5232F-ON validation
This section contains validation commands for the Dell PowerSwitch S5232F-ON leaf switches.
show vlt
The show vlt command
validates the VLT configuration status when the VLTi Link Status is up. The role of one switch in the VLT pair is primary, and its peer switch (not shown) is assigned the secondary role.
S5232-Leaf1# show vlt 1
Domain ID : 1
Unit ID : 1
Role : primary
Version : 1.0
Local System MAC address : 4c:76:25:e8:f2:c0
VLT MAC address : 4c:76:25:e8:f2:c0
IP address : fda5:74c8:b79e:1::1
Delay-Restore timer : 90 seconds
Peer-Routing : Disabled
Peer-Routing-Timeout timer : 0 seconds
VLTi Link Status
port-channel1000 : up
VLT Peer Unit ID System MAC Address Status IP Address Version
--------------------------------------------------------------------------------
2 4c:76:25:e8:e8:40 up fda5:74c8:b79e:1::2 1.0
show lldp neighbors
show lldp neighbors
command provides information about connected devices. In this case, ethernet1/1/1
and ethernet1/1/3
connect to the two MX9116n FSEs, C160A2
and C140A1
. The remaining links, ethernet1/1/29
, and ethernet 1/1/31
, represent the VLTi connection. S5232-Leaf1# show lldp neighbors
Loc PortID Rem Host Name Rem Port Id Rem Chassis Id
----------------------------------------------------------------
ethernet1/1/1 C160A2 ethernet1/1/41 20:04:0f:00:a1:9e
ethernet1/1/3 C140A1 ethernet1/1/41 20:04:0f:00:cd:1e
ethernet1/1/29 S5232-Leaf2 ethernet1/1/29 4c:76:25:e8:e8:40
ethernet1/1/31 S5232-Leaf2 ethernet1/1/31 4c:76:25:e8:e8:40
show spanning-tree brief
The show spanning-tree brief
command validates that STP is enabled on the leaf switches. All the interfaces are forwarding (FWD
), as shown in the Sts
column.
S5232-Leaf1# show spanning-tree brief
Spanning tree enabled protocol rapid-pvst
VLAN 1
Executing IEEE compatible Spanning Tree Protocol
Root ID Priority 32768, Address 2004.0f00.a19e
Root Bridge hello time 2, max age 20, forward delay 15
Bridge ID Priority 32769, Address 4c76.25e8.f2c0
Configured hello time 2, max age 20, forward delay 15
Flush Interval 200 centi-sec, Flush Invocations 432
Flush Indication threshold 0 (MAC flush optimization is disabled)
Interface Designated
Name PortID Prio Cost Sts Cost Bridge ID PortID
--------------------------------------------------------------------------------
port-channel1 128.2517 128 50 FWD 0 32768 2004.0f00
Interface
Name Role PortID Prio Cost Sts Cost Link-type Edge
--------------------------------------------------------------------------------
port-channel1 Root 128.2517 128 50 FWD 0 AUTO No
VLAN 10
Executing IEEE compatible Spanning Tree Protocol
Root ID Priority 32778, Address 4c76.25e8.e840
Root Bridge hello time 2, max age 20, forward delay 15
Bridge ID Priority 32778, Address 4c76.25e8.f2c0
Configured hello time 2, max age 20, forward delay 15
Flush Interval 200 centi-sec, Flush Invocations 5
Flush Indication threshold 0 (MAC flush optimization is disabled)
Interface Designated
Interface Designated
Name PortID Prio Cost Sts Cost Bridge ID PortID
--------------------------------------------------------------------------------
port-channel1 128.2517 128 50 FWD 1 32768 2004.0f00
Interface
Name Role PortID Prio Cost Sts Cost Link-type Edge
--------------------------------------------------------------------------------
port-channel1 Root 128.2517 128 50 FWD 1 AUTO No