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4
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rkoloj
Beginner

Can't ping P2P between 2 Nexus 9k's

I can't ping between 2 Nexus 9k's.  Both interfaces are configured as follows:

 

Nexus Switch 1:

int eth1/18

 ip address 192.168.1.1/31

 no shut

 

Nexus Switch 2:

int eth1/18

 ip address 192.168.1.2/31

 no sh

 

I also tried configuring an 'ip route' on either switch to each other.  It's still saying 'no route to host'....Do I need a routing protocol put on the interface since it a 'routed' port?  Thanks for your help!

1 ACCEPTED SOLUTION

Accepted Solutions

Hello!

In a way, the Nexus is telling you the truth here - 192.168.1.1/31 and 192.168.1.2/31 are in different subnets. Since you are using /31 subnets, the two IP addresses in the first subnet are 192.168.1.0 and 192.168.1.1, while the two IP addresses in the second subnet are 192.168.1.2 and 192.168.1.3. Therefore, 192.168.1.1/31 and 192.168.1.2/31 are in two different subnets.

To fix this, you have the following options:

  1. Configure Nexus Switch 1 with an IP address of 192.168.1.0/31 and Nexus Switch 2 with an IP address of 192.168.1.1/31.
  2. Configure Nexus Switch 1 with an IP address of 192.168.1.1/30 and Nexus Switch 2 with an IP address of 192.168.1.2/30.

I hope this helps - thank you!

-Christopher

View solution in original post

4 REPLIES 4
balaji.bandi
VIP Master

i would advise to post full coinfiguration of both the sides, along with show version.

 

have you enabled features

 

post below output as suggested above :

 

show run

show version

show features

show interface eth1/18 (bot the sides)

 

 

BB

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I cannot post full configuration, its a secure network.  

 

Version: nxos 9.3.7

 

However, here is the features:

 

feature bgp
feature isis
feature nv overlay
feature vn-segment

The interfaces are:

 

Nexus Switch 1:

int eth1/18

 ip address 192.168.1.1/31

 no shut

 

Nexus Switch 2:

int eth1/18

 ip address 192.168.1.2/31

 no sh

Hello!

In a way, the Nexus is telling you the truth here - 192.168.1.1/31 and 192.168.1.2/31 are in different subnets. Since you are using /31 subnets, the two IP addresses in the first subnet are 192.168.1.0 and 192.168.1.1, while the two IP addresses in the second subnet are 192.168.1.2 and 192.168.1.3. Therefore, 192.168.1.1/31 and 192.168.1.2/31 are in two different subnets.

To fix this, you have the following options:

  1. Configure Nexus Switch 1 with an IP address of 192.168.1.0/31 and Nexus Switch 2 with an IP address of 192.168.1.1/31.
  2. Configure Nexus Switch 1 with an IP address of 192.168.1.1/30 and Nexus Switch 2 with an IP address of 192.168.1.2/30.

I hope this helps - thank you!

-Christopher

View solution in original post

ugh duh, ok i'll try that.  thanks.