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44 Leaf-Spine Deployment and Best Practices Guide | Version 1.0
10.0.2.1/32, ubest/mbest: 1/0
*via 192.168.1.1, [20/0], 00:51:59, bgp-64601, external, tag 64701,
10.0.2.2/32, ubest/mbest: 1/0
*via 192.168.1.3, [20/0], 00:56:12, bgp-64601, external, tag 64702,
10.0.2.3/32, ubest/mbest: 1/0
*via 192.168.1.5, [20/0], 00:52:07, bgp-64601, external, tag 64703,
10.0.2.4/32, ubest/mbest: 1/0
*via 192.168.1.7, [20/0], 00:56:08, bgp-64601, external, tag 64704,
10.60.1.0/24, ubest/mbest: 2/0
*via 192.168.1.5, [20/0], 00:52:07, bgp-64601, external, tag 64703,
*via 192.168.1.7, [20/0], 00:52:23, bgp-64601, external, tag 64704,
172.16.1.0/24, ubest/mbest: 2/0
*via 192.168.1.1, [20/0], 00:51:59, bgp-64601, external, tag 64701,
*via 192.168.1.3, [20/0], 00:53:42, bgp-64601, external, tag 64702,
S4048-Leaf1 has two paths to all other leafs and two paths to Server 2’s network, 10.60.1.0. There is one
path through each spine. If all paths do not appear, make sure the maximum-paths statement in the BGP
configuration is equal to or greater than the number of spines in the topology.
S4048-Leaf1#show ip route bgp
Destination Gateway Dist/Metric Last Change
----------- ------- ----------- -----------
B EX 10.0.2.2/32 via 192.168.1.0 20/0 00:39:04
via 192.168.2.0
B EX 10.0.2.3/32 via 192.168.1.0 20/0 00:39:04
via 192.168.2.0
B EX 10.0.2.4/32 via 192.168.1.0 20/0 00:39:03
via 192.168.2.0
B EX 10.60.1.0/24 via 192.168.1.0 20/0 00:39:04
via 192.168.2.0
8.2.4 show ip route ospf
On switches with OSPF configured, this command is used to verify the OSPF 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 Nexus5600-Spine1, one through each
leaf.
The first set of routes with a subnet mask of /32 are the IPs configured for router IDs.
Nexus5600-Spine1# show ip route ospf
IP Route Table for VRF "default"
'*' denotes best ucast next-hop
'**' denotes best mcast next-hop
'[x/y]' denotes [preference/metric]
'%<string>' in via output denotes VRF <string>