Wednesday, July 31, 2019

Ubiquiti AirFiber 24 as a redundant ring

I am still fairly new to the networking world, so be gentle :)

I manage the network (WAN/LAN/WLAN) for a large school district (75+ sites, 68k students, 7500k staff). My director wants to implement a redundant network using Ubiquiti Airfiber 24 wireless bridges in the case of fiber cuts. We are a growing city and this is happening more and more often.

We are a Cisco shop, hub and spoke network (Core switch--> Campus 4500X--> 2960X stack in each IDF.) I'm looking at route policies to that leverages the production fiber connection, then flip to the airfiber connection if the pair is cut and becomes unreachable, but I'm not 100% confident in my thought process. Something like this:

interface Vlan100

ip address X.X.X.X 255.255.255.254

no ip redirects

no ip unreachables
!

interface Vlan101

ip address Y.Y.Y.Y 255.255.255.254

no ip redirects

no ip unreachables
!

interface GigabitEthernet1/1

description Fiber

switchport access vlan 100

switchport mode access

spanning-tree portfast

!

interface GigabitEthernet1/2

description AirFiber

switchport access vlan 101

switchport mode access

spanning-tree portfast
!

ip local policy route-map AirFiber

ip route 0.0.0.0 0.0.0.0 X.X.X.X track 123

ip route 0.0.0.0 0.0.0.0 Y.Y.Y.Y 254

!

route-map AirFiber permit 10

match ip address 101

set ip next-hop X.X.X.X

Anyone have any experience with Airfiber deployment and configuration? What is best practice for configuring this with minimal downtime? Do you use L3 with alternate VLANs and IPs for Airfiber? Any help and suggestions are greatly appreciated.



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