Replacing a Cisco Nexus 9336C-FX2 cluster switch
Replacing a defective Nexus 9336C-FX2 switch in a cluster network is a nondisruptive procedure (NDU).
The following conditions must exist before performing the switch replacement in the current environment and on the replacement switch.
- Existing cluster and network infrastructure:
- The existing cluster must be verified as completely functional, with at least one fully connected cluster switch.
- All cluster ports must be up.
- All cluster logical interfaces (LIFs) must be up and on their home ports.
- The ONTAP cluster ping-cluster -node node1 command must indicate that basic connectivity and larger than PMTU communication are successful on all paths.
- Nexus 9336C-FX2 replacement switch:
- Management network connectivity on the replacement switch must be functional.
- Console access to the replacement switch must be in place.
- The node connections are ports 1/1 through 1/34.
- All Inter-Switch Link (ISL) ports must be disabled on ports 1/35 and 1/36.
- The desired reference configuration file (RCF) and NX-OS operating system image switch must be loaded onto the switch.
Initial customization of the switch must be complete, as detailed in:
Configuring a new Cisco Nexus 9336C-FX2 switch
Any previous site customizations, such as STP, SNMP, and SSH, should be copied to the new switch.
You must execute the command for migrating a cluster LIF from the node where the cluster LIF is hosted.
The examples in this procedure use the following switch and node nomenclature:
- The names of the existing Nexus 9336C-FX2 switches are cs1 and cs2.
- The name of the new Nexus 9336C-FX2 switch is newcs2.
- The node names are node1 and node2.
- The cluster ports on each node are named e0a and e0b.
- The cluster LIF names are node1_clus1 and node1_clus2 for node1, and node2_clus1 and node2_clus2 for node2.
- The prompt for changes to all cluster nodes is cluster1::*>
Note
The following procedure is based on the following cluster network topology:
cluster1::*> network port show -ipspace Cluster
Node: node1
Ignore
Speed(Mbps) Health Health
Port IPspace Broadcast Domain Link MTU Admin/Oper Status Status
--------- ------------ ---------------- ---- ---- ----------- -------- ------
e0a Cluster Cluster up 9000 auto/10000 healthy false
e0b Cluster Cluster up 9000 auto/10000 healthy false
Node: node2
Ignore
Speed(Mbps) Health Health
Port IPspace Broadcast Domain Link MTU Admin/Oper Status Status
--------- ------------ ---------------- ---- ---- ----------- -------- ------
e0a Cluster Cluster up 9000 auto/10000 healthy false
e0b Cluster Cluster up 9000 auto/10000 healthy false
4 entries were displayed.
cluster1::*> network interface show -vserver Cluster
Logical Status Network Current Current Is
Vserver Interface Admin/Oper Address/Mask Node Port Home
----------- ---------- ---------- ------------------ ------------- ------- ----
Cluster
node1_clus1 up/up 169.254.209.69/16 node1 e0a true
node1_clus2 up/up 169.254.49.125/16 node1 e0b true
node2_clus1 up/up 169.254.47.194/16 node2 e0a true
node2_clus2 up/up 169.254.19.183/16 node2 e0b true
4 entries were displayed.
cluster1::*> network device-discovery show -protocol cdp
Node/ Local Discovered
Protocol Port Device (LLDP: ChassisID) Interface Platform
----------- ------ ------------------------- ---------------- ----------------
node2 /cdp
e0a cs1 Eth1/2 N9K-C9336C
e0b cs2 Eth1/2 N9K-C9336C
node1 /cdp
e0a cs1 Eth1/1 N9K-C9336C
e0b cs2 Eth1/1 N9K-C9336C
4 entries were displayed.
cs1# show cdp neighbors
Capability Codes: R - Router, T - Trans-Bridge, B - Source-Route-Bridge
S - Switch, H - Host, I - IGMP, r - Repeater,
V - VoIP-Phone, D - Remotely-Managed-Device,
s - Supports-STP-Dispute
Device-ID Local Intrfce Hldtme Capability Platform Port ID
node1 Eth1/1 144 H dm5000h e0a
node2 Eth1/2 145 H dm5000h e0a
cs2 Eth1/35 176 R S I s N9K-C9336C Eth1/35
cs2(FDO220329V5) Eth1/36 176 R S I s N9K-C9336C Eth1/36
Total entries displayed: 4
cs2# show cdp neighbors
Capability Codes: R - Router, T - Trans-Bridge, B - Source-Route-Bridge
S - Switch, H - Host, I - IGMP, r - Repeater,
V - VoIP-Phone, D - Remotely-Managed-Device,
s - Supports-STP-Dispute
Device-ID Local Intrfce Hldtme Capability Platform Port ID
node1 Eth1/1 139 H dm5000h e0b
node2 Eth1/2 124 H dm5000h e0b
cs1 Eth1/35 178 R S I s N9K-C9336C Eth1/35
cs1 Eth1/36 178 R S I s N9K-C9336C Eth1/36
Total entries displayed: 4
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