Hello,
I need to replace old SSG140 with SRX345 HA.
My idea is to user 2 x Standalone EX2300 as external switches with multiple vlans to be able to connect same time both SSG and SRX. In that way I can try and test SRX345 configuration and revert back all communication to currently operational SSGs.
I simply disable ports on both EXs that SSGs are connected to, and enable ports that SRXes are connected to and return the same way back when I'm done with config testing.
I've drawn exact cabling scheme that have caused me some issues creating loops somewhere but I can't find it where.
When I connect cables as shown, while ports connecting to SRXes are down, my Direct Link wont work, it goes in some kind of loop causing other network on the other end to go berserk.
Same time, I can see on SSGs console output that its flapping back and forth master becoming slave in NSRP and back.
On the other hand, when I remove uplink on my internal switches, my LAN side cannot access SSGs on its LAN interface, and no outputs on SSGs console.
However my main goal is to completely remove SSGs, but during this transition period, I need to have both there (SRX and SSG), but of course not both active same time, because they share same LAN ip, ISP WAN ips and so on.
Any suggestions on configuring and cabling correctly EX2300 VC on external side to SRXes to achieve the same connectivity that is on presented scheme.
Notice that standalone external EXs have the same vlan config. Vlan10 on both external EXs have the same name and vlan.id., vlan11, 12 etc are the same on both external switches. All vlan ports are in access mode.
On SRX and SSG interfaces, there are no vlans defined, and communication from LAN through SSGs or SRXes towards internet via both ISPs is working.
SRX345 HA is working as it supposed to be, there are 4 reth interfaces as on the scheme, 3 zones, and the same is on SSG NSRP.
That master/slave flapping between SSGs, unreachable SSGs and unreachable LAN via Direct Link is whats troubling me.
Any suggestions on cabling and configuration are welcome.
Thanks
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Vedran Milicevic
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