Linux bonding modes
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- Oct, 05, 2010
- Angelo Schalley
- Cisco, HP, Linux, Networking
Round-robin policy: Transmit packets in sequential order from the first available slave through the
last. This mode provides load balancing and fault tolerance.
Active-backup policy: Only one slave in the bond is active. A different slave becomes active if, and only if, the active slave fails. The bond’s MAC address is externally visible on only one port (network adapter) to avoid confusing the switch.In bonding version 2.6.2 or later, when a failover occurs in active-backup mode, bonding will issue one or more gratuitous ARPs on the newly active slave. One gratuitous ARP is issued for the bonding master interface and each VLAN interfaces configured above
it, provided that the interface has at least one IP address configured. Gratuitous ARPs issued for VLAN interfaces are tagged with the appropriate VLAN id.This mode provides fault tolerance. The primary option, documented below, affects the behavior of this mode.
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Check for open ports on linux
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- Sep, 25, 2010
- Angelo Schalley
- Linux, Networking
lsof -i -P -n
IIS SMTP folder structure and how smtp works
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- Sep, 25, 2010
- Angelo Schalley
- Active Directory, Exchange, IIS, Networking, Windows-Microsoft
The message store of the SMTP service is created when you install the service on IIS. SMTP utilizes this directory structure to process mail. The folders created in the \Inetpub\Mailroot directory structure (message store) are listed below:
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