Day2

 

Here's a brief explanation of each Exadata network component you've listed:

1. Management Network

  • Purpose: For administrative access, patching, OEM, monitoring, and SSH.
  • Interface: eth0 or mgmt0
  • Connected to: Management switches
  • Speed: Typically 1GbE
  • Example use: dcli, ssh, SNMP monitoring

2. ILOM Network

  • Purpose: Out-of-band hardware-level management (power, console, diagnostics).
  • Device: ILOM (Integrated Lights Out Manager)
  • Dedicated port: Separate from OS-managed NICs
  • Access via: Web UI, SSH, IPMI

3. Client Network

  • Purpose: Client/application connectivity using SCAN, VIPs, and listeners.
  • Interface: bond0, eth1, or net0/net1 (varies by hardware/gen)
  • Speed: 10/25/100 GbE depending on model
  • Connected to: Corporate network or load balancer
  • DNS dependency: For SCAN resolution

4. InfiniBand / RoCE Network

  • Purpose: Internal communication between:
    • DB nodes (RAC interconnect / Cache Fusion)
    • DB nodes and storage (iDB for Smart Scan)
  • InfiniBand: Used in X7 and earlier
  • RoCE: Used in X8M/X9M and later
  • Interface: ib0, ib1, eth2, bond1, or roce0 (hardware dependent)
  • Speed: 40Gbps (IB), 100Gbps (RoCE)

5. Additional Client Network

  • Purpose: Used when separating OLTP/OLAP traffic, or for multi-tenant/multi-application segregation.
  • Can also serve:
    • Low-latency read replicas
    • DR client routing
  • Configured as: Additional bonded or VLAN-tagged interface

6. ZFS Network

  • Purpose: High-speed backup and restore to/from ZFS Storage Appliance (ZS7/ZFSSA)
  • Interface: Dedicated NIC, often 10/25 GbE
  • Traffic: RMAN backups, archive logs, Data Guard shipping
  • Connected to: ZFS via NFS or dNFS (Direct NFS)



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