Deployment Guide
Table Of Contents
- 1 Introduction
- 2 Hardware overview
- 3 Leaf-spine overview
- 4 Protocols used in the leaf-spine examples
- 5 Layer 3 configuration planning
- 6 Example 1: Layer 3 with Dell EMC leaf and spine switches using OSPF
- 7 Example 2: Layer 3 with Dell EMC leaf and spine switches using eBGP
- A Dell EMC Networking ONIE switch factory default settings
- B Validated hardware and operating systems
- C Technical support and resources
- D Support and Feedback
19 Dell EMC Networking Layer 3 Leaf-Spine Deployment and Best Practices with OS10 | Version 1.0
Internal Use - Confidential
Note: If multiple loopback interfaces exist on a system, the interface with the highest numbered IP address
is used as the router ID. This configuration only uses one loopback interface.
S4148F-Leaf1
S4148F-Leaf2
interface ethernet 1/1/25
description "Z9100-Spine1 eth 1/1/1"
no switchport
ip address 192.168.1.1/31
ip ospf 1 area 0
no shutdown
interface ethernet 1/1/26
description "Z9100-Spine2 eth 1/1/1"
no switchport
ip address 192.168.2.1/31
ip ospf 1 area 0
no shutdown
interface loopback 0
description "Router ID"
ip address 10.0.2.1/32
no shutdown
interface ethernet 1/1/25
description "Z9100-Spine1 eth 1/1/2"
no switchport
ip address 192.168.1.3/31
ip ospf 1 area 0
no shutdown
interface ethernet 1/1/26
description "Z9100-Spine2 eth 1/1/2"
no switchport
ip address 192.168.2.3/31
ip ospf 1 area 0
no shutdown
interface loopback 0
description "Router ID"
ip address 10.0.2.2/32
no shutdown
Configure a route map and IP prefix-list to redistribute all loopback addresses and leaf networks via OSPF.
The command seq 10 permit 10.0.0.0/8 ge 24 includes all addresses in the 10.0.0.0/8 address
range with a mask greater than or equal to 24. This includes all loopback addresses used as router IDs as
well as the 10.60.1.0/24 network used on leaf switches 3 and 4 as shown in Figure 12.
The command seq 20 permit 172.16.0.0/16 ge 24 includes the 172.16.1.0/24 network used on leaf
switches 1 and 2 as shown in Figure 12.
S4148F-Leaf1
S4148F-Leaf2
route-map spine-leaf permit 10
match ip address prefix-list spine-
leaf
ip prefix-list spine-leaf seq 10
permit 10.0.0.0/8 ge 24
ip prefix-list spine-leaf seq 20
permit 172.16.0.0/16 ge 24
route-map spine-leaf permit 10
match ip address prefix-list spine-
leaf
ip prefix-list spine-leaf seq 10
permit 10.0.0.0/8 ge 24
ip prefix-list spine-leaf seq 20
permit 172.16.0.0/16 ge 24
Configure UFD. This shuts the downstream interfaces if all uplinks fail. The hosts attached to the switch use
the remaining LACP LAG member to continue sending traffic across the fabric.