Cannot form 3-site cluster peering for cdot 8.3 with cross-site links on different subnets

[sheelnidhig]

Hello Guys,

We have Cluster Mode Backup cluster for main site, the intercluster lif is on a isolated network.

Now we want to protact the remote sites, the intercluster connection is on a routed network.

I am able to create a cluster peer connection from remote site to main cluster mode backup server but not from centracl backup cluster to remote site:

Getting the following error.

cluster1::> cluster peer create -peer-addrs 10.10.10.11 -address-family ipv4

Notice: Choose a passphrase of 8 or more characters. To ensure the authenticity of the peering relationship, use a phrase or sequence
of characters that would be hard to guess.

Enter the passphrase:
Confirm the passphrase:

Error: command failed: Using peer-address 110.10.10.11: An introductory RPC to the peer address "10.10.10.11" failed to connect:
RPC: Remote system error - No route to host. Verify that the peer address is correct and try again.

cluster1::>

Network configuration on main site is:

cluster1::> network interface show -role intercluster
Logical Status Network Current Current Is
Vserver Interface Admin/Oper Address/Mask Node Port Home
----------- ---------- ---------- ------------------ ------------- ------- ----
cluster1
cluster1-n1_bck
up/up 172.16.1.45/24 cluster1-n1 a1b-20 true
cluster1-n1_glbbck1
up/up 16.200.1.159/25 cluster1-n1 a1a-10
true
cluster1-n2_bck
up/up 172.16.1.48/24 cluster1-n2 a2b-20 true
cluster1-n2_glbbck1
up/up 16.200.1.160/25 cluster1-n2 a2a-10
true
cluster1-n3_bck
up/up 172.16.1.64/24 cluster1-n3 a3b-20
true
cluster1-n3_glbbck1
up/up 16.200.1.161/25 cluster1-n3 a3a-10
true
cluster1-n4_bck
up/up 172.16.1.65/24 cluster1-n4 a4b-20
true
cluster1-n4_glbbck1
up/up 16.200.1.162/25 cluster1-n4 a4a-10
true
8 entries were displayed.

cluster1::>

I am not able to create a cluster peer because all the IP's are in Default IP space and if that is the case, how can i solve it.

Thanks,

Sheel

[aborzenkov]

I'd say, "No route to host" is pretty self-explanatory. You need route to remote network (and remote network needs route to local site). It can be default gateway or it can be network/host specific route, but this is standard IP connectivity, nothing specific to cluster peering or cDOT in general.

---

I am not able to create a cluster peer because all the IP's are in Default IP space

---

So far there is no indication it is related to IP space. You may need different IP space if different destinations with the same IP addresses are reachable via different gateways. But there is not enough information to speculate about it.

[Naveenpusuluru]

Can you please post the output of "route show"

[sheelnidhig · Accepted solution]

Hey Guys,

I have got the solution for this issues from one of the KB article:

https://kb.netapp.com/support/index?page=content&id=1015890&actp=LIST

Thanks,

Sheel