Forwarding Protocols • bgp advertising and /29 subnet issues

Good Afternoon all
I am hoping for some advice

I have a unknown to me issue i was hoping for some assistance with.
I have a cluster of mikrotiks C2116-12g-4s each peering with a different ISP, We advertise two ranges x.x.x.0/24
on the mikrotik i have setup a vrrp with a /29 network in this range x.x.x.72/29 with the interface/gw address being x.x.x.73/29
I have a srx300 firewall I configure the wan interface to have the ip x.x.x.74/29 with its next hop being x.x.x.73
My SRX will gain internet access but after a few min the connection drops, then after some time the connection comes back for a few min then drops again. It just keeps repeating this cycle
If i reconfigure the vrrp to be the whole /24 and give my srx an ip of x.x.x.74/24 with a next-hop of x.x.x.1, the connection stays connected.
I run a traceroute from terminal with scr-address set to x.x.x.73 and it doesn't leave my ISP's network

To add to my confusion.
I have tested this vrrp network by configuring a windows vm with the IP details of x.x.x.75 subnet 255.255.255.248 gw x.x.x.73 and it has internet and keeps its connection

Statistics: Posted by Webnetism — Tue Feb 13, 2024 4:26 pm

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