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
36 Dell EMC Networking Layer 3 Leaf-Spine Deployment and Best Practices with OS10 | Version 1.0
Internal Use - Confidential
Command and output examples are provided for one spine and one leaf. Command output on other switches
is similar.
7.3.1 show ip bgp summary
This command shows the status of all BGP connections. Each spine has four neighbors (the four leaf
switches) and each leaf switch has two neighbors (the two spines switches). As can be seen, the leaf
switches each use different ASNs, as the environment uses eBGP.
Z9100-Spine1#show ip bgp summary
BGP router identifier 10.0.1.1 local AS number 64601
Neighbor AS MsgRcvd MsgSent Up/Down State/Pfx
192.168.1.1 64701 43 45 00:01:38 8
192.168.1.3 64702 43 46 00:01:38 8
192.168.1.5 64703 42 46 00:01:38 8
192.168.1.7 64704 43 45 00:01:37 8
S4148F-Leaf1#show ip bgp summary
BGP router identifier 10.0.2.1 local AS number 64701
Neighbor AS MsgRcvd MsgSent Up/Down State/Pfx
192.168.1.0 64601 110 106 00:04:22 12
192.168.2.0 64602 108 110 00:04:19 12
7.3.2 show ip route bgp
This command is used to verify the BGP entries in the Routing Information Base (RIB). Entries with multiple
paths shown are used with ECMP. The two server networks in this example, 10.60.1.0 and 172.16.1.0, each
have two best paths from Z9100-Spine1, one through each leaf switch.
Note: The first set of routes with a subnet mask of /32 are the IPs configured for router IDs.
Z9100-Spine1#show ip route bgp
Codes: C - connected
S - static
B - BGP, IN - internal BGP, EX - external BGP
O - OSPF, IA - OSPF inter area, N1 - OSPF NSSA external type 1,
N2 - OSPF NSSA external type 2, E1 - OSPF external type 1,
E2 - OSPF external type 2, * - candidate default,
+ - summary route, > - non-active route
Gateway of last resort is not set
Destination Gateway Dist/Metric Last Change
--------------------------------------------------------------------------------
B EX 10.0.1.2/32 via 192.168.1.1 20/0 00:09:01
via 192.168.1.3
B EX 10.0.2.1/32 via 192.168.1.1 20/0 00:09:04
B EX 10.0.2.2/32 via 192.168.1.3 20/0 00:09:04