1 Router 2 WAN links to 1 ISP with HSRP

[Mundo]

Hello Everyone,

I am having some difficulties with the following.

I have 2 WAN ports to the same ISP where I need to configure these two ports as Primary and Backup with HSRP.

Each interface has its own /30 subnet.

Now I am comfortable with LAN side of things but this has me struggling for couple of hours and its evading me since I know I need at least 4 usable IPs to configure the HSRP, but the 2 WAN ports are the thing that is throwing me off.

#########################

interface GigabitEthernet0/0/1.1
description WAN_Main
bandwidth 50000
encapsulation dot1Q 20 second-dot1q 200
ip address x.x.x.x 255.255.255.252
service-policy output xxx

#############

interface GigabitEthernet0/0/0.1
description WAN_Backup
bandwidth 20000
encapsulation dot1Q 31 second-dot1q 310
ip address x.x.x.x 255.255.255.252
service-policy output xxx




##############################

Any help or tips in the right direction is greatly appreciated.

thank you

[MHM Cisco World]

two port in same router and you want to use HSRP ??

[Mundo]

That is the only redundancy protocol we use. this was just dropped on me to be fair with little to no explanation I kinda have to figure it out.

[MHM Cisco World · Accepted solution]

One Inside two Outside 
what you need 
static route with 

one high AD <<- this for backup
other with IP SLA track <<-  this for primary 

router will check the primary when it down (IP SLA is down) the static route will remove and backup static route will be now the primary for traffic 

for NAT you need to use  PBR to match the interface 

https://blog.router-switch.com/2013/08/steps-to-configure-static-nat-with-route-maps/

[Mundo]

Thank you for taking the time.

For routing I have BGP running and can not switch.

neighbor x.x.x.x activate
neighbor x.x.x.x  send-community
neighbor x.x.x.x weight 2000
neighbor x.x.x.x  soft-reconfiguration inbound

neighbor y.y.y.y  activate
neighbor y.y.y.y send-community
neighbor y.y.y.y weight 1000



X-Primary Y- Backup

[MHM Cisco World]

but you use weight so you config primary and backup by change wieght of prefix from both Peer. 
can I see 

show ip bgp ??

[Mundo]

Thank you @MHM I just figured it out.