Cisco ACI MultiPod with IPN devices connected using Multiple devices

ccietrainee1 · ‎10-04-2024

Hi All,

I am working on a HLD where I need to extend my ACI multi pod (Site A) to another Site (Site C) which is located 350 miles away from the existing ACI Main POD. Customer is working with Megaport to provide the connection between these sites. But we dont have the direct connection between these sites. I have connection from Site A to Site B (Transit Site and no ACI POD is there, this is just a transit Site), From Site B , I have another WAN connection to Site C. The overall latency is within the 50ms, so we don't see any issues over there.

I have the following questions

1. Between my IPN devices in Site A and Site C, there are multiple devices. What protocol and feature should be supported on those devices? (Multicast PIM, routing Protocols, any other?)
2. Can anybody share sample configuration for the devices between the IPN and the transit devices?
3. We are going to host only one application environment in the new POD. and there will be only 2 Spine and 2 Leaf switches. How to design OOB for these 4 devices, should I go for another WAN link for OOB management? Can this be simplified for cost optimization.
4.Customer also want to enable MacSec encryption over the WAN links, is it supported? Can anyone share some sample config template?

Thanks and regards,
B Senthil Kumar

AshSe · ‎10-14-2024

Dear Senthil Kumar, Wouldn't it be great if you can draw a simple diagram and share across with your query. Anyways, let me help you with a diagram to begin with:

Please let me know if any correction required in the diagram.

Answers to your first two questions:

1. OSPF & PIM

2. Check configuration below:

Steps to Configure Multipod Solution

1.Enabling Features

2.Configuring a VRF Instance

3.Configuring the OSPF Process

4.Configuring Multicast

5.Configuring DHCP Relay

6.Configuring IPN interfaces with DHCP

7.Configuring APIC for Multi-Pod setup

First 6 steps are IPN configuration steps.

1.Enabling Features

feature lldp

feature ospf

feature interface-vlan

feature dhcp

feature pim

2. Configuring a VRF Instance

vrf context IPN-1

3. Configuring the OSPF Process

feature ospf

!

router ospf IPN

vrf IPN-1

router-id 1.1.1.1

log-adjacency-changes

4. Configuring Multicast

interface loopback1

description BIDIR Phantom RP

vrf member IPN-1

ip address 192.168.100.1/30

ip ospf network point-to-point

ip router ospf IPN area 0.0.0.0

ip pim sparse-mode

!

vrf context IPN-1

ip pim rp-address 192.168.100.2 group-list 225.0.0.0/8 bidir

ip pim rp-address 192.168.100.2 group-list 239.255.255.240/28 bidir

interface ethernet1/7

mtu 9150

no shutdown

!

interface ethernet1/7.4

description 40G from p1-ipn1 to Spine-1