Wired Intelligent Edge

i have a draytek router, which provides DHCP in 192.168.1.0 range.

1 cisco unmanged switch is directly attached to the draytek router.

2 aruba switch 2930 F(stacked ) is connected to the cisco switch.

Aruba contains VLANS for server, ISCSI, vmotion. using default vlan for management.

Now my question is how do we manage the switch if the first switch goes down.

Since aruba master switch is connected to the cisco.

So if master goes down basically member switch loses connectivity to the internet. whats the solution here?

Any help would be great

You should add a resiliency factor between your single Cisco Switch (which will continue to be a SPoF in your deployment) and the Stack (VSF? Backplane stack? doesn't matter), what does it mean? add a LACP port aggragation from your Cisco and the Aruba stack, two ports would be sufficient...two ports aggregated on Cisco side (EtherChannel in Cisco terminology), two ports aggregated on Aruba stack side (LACP Trunk in HP/Aruba terminology)...clearly on Aruba side you need to use one port of 1st Stack Member and the other port on 2nd Stack Member...so...when a Stack member goes down the northbound traffic path is not totally broken (since at least one port of the aggregated link is still Up).

Thats where i am having issue, since the cisco switch got no management options. so etherchannel option is not on the table.

 

Does the Drytek router, LAN side, admit ports bonding/teaming/aggregation using LACP? if so and if you have enough LAN ports on Drytek you can bypass the unmanaged Ciscob (defintely keeping it out of the equation)...if not...you're pretty much stuck with regards to trying to add active resiliency between your Router and your "core" switching infrastructure thus eliminating a real SPoF (also Cisco switch placement looks questionable considering what you want to achieve and considering Aruba 2930F product's enterprise class features and its potential role in your network scenario).