how can a switch reach storage network?

[Maivoko]

when a switch has default gateway to internet,

how can a access switch reach storage network which diagram shown below access switch in reverse direction of internet?

or 

storage network can only be connected at core layer ?

[balaji.bandi]

May be you need move from Default gateway to ip routing and you also need to make a static route for the otehr subnet towards other gateway where they located for switch to reach storage.

is this storage acces for switch or users connected to switch ? or VLAN ?

[M02@rt37]

Hello @Maivoko,

The storage network can indeed be connected at various layers of the network, including access and distribution layers. The key is to ensure proper routing and configuration to enable communication between devices in different segments of the network.

Also, the solution depends on the specific network design, topology, the devices and technologies in use.

[Joseph W. Doherty]

What attached diagram?

[Richard Burts]

We know very little about this environment and I agree with Joseph that the diagram mentioned in the original post would be a good starting point.

The original post talks about a switch but it is not clear whether the switch is operating as layer 2 switch or layer 3 switch. It mentions that the switch has a default gateway and perhaps that suggests that it is layer 2. Some clarification would be helpful. Also helpful if there was clarification whether access to the storage network was by the switch itself or was by devices connected to the switch.

The key element in answering this question will be what device is doing the routing in this network and is the routing operating properly as pointed out by M02@rt37 .

[Maivoko]

CCNA Data Center diagram 1 - SANCCNA Data Center diagram 2 - SAN

[Joseph W. Doherty · Accepted solution]

"when a switch has default gateway to internet,"

The switch as a host, or as a L3 switch for transit traffic?

ONLY a default gateway (or default route) to Internet?

For a default route, that's generally just directs traffic away from the edge, where upstream devices can redirect traffic to known networks that are not Internet networks.

"how can a access switch reach storage network which diagram shown below access switch in reverse direction of internet?"

If switch is L3, it might have SAN device as a known internal route.  And/or, since both diagrams show L2 on bottom of aggregation (distribution) layer, possible SAN device might be reached by L2 (i.e. SAN devices has an IP foot in edge networks).

[Maivoko]

You said both diagram shown layer 2 switch , but internet vlan and SAN vlan should be different , if it is not a layer 3 router , how can other access switch can find the route through these layer 2 switch to SAN network?

the diagram look like layer 3 switch router, it should have route to SAN network 

the design look odds, because access layer usually are layer 2 switch but diagram show expensive layer 3 switch router for normal users use, N7K also been access layer ?

I think the diagram can be drawn from another point of view. therefore, all design are actually at core layer to route to SAN network. There is no access layer route to SAN network , because the below diagram can be moved to the same level of core layer just route to another block of SAN network

[Joseph W. Doherty]

"You said both diagram shown layer 2 switch . . ."

Actually, I didn't write that, I mentioned L2 was shown being used below the aggregation (distribution) layer.

". . . if it is not a layer 3 router . . ."

All of the L3 devices (on non-SAN side) appear to be L3 switches, which can concurrently support L2 and L3.

". . . how can other access switch can find the route through these layer 2 switch to SAN network?"

Again, unclear what's being done as we see L3 switches, L3/L2 usage demarcations, no IP addresses.  Again, possibly, the SAN network is multi-home across VLANs.

So as @Richard Burts  wrote "We know very little about this environment . . ." and although the new attachments help, it's still not totally clear (well, at least to me).

Also notice, my prior reply had a couple of questions and proposed a possible answer using the word "might".

All of the above, is just a long way of say, what I wrote was my best possible guess with the information available.  ; )