Brocade Multi-Service IronWare Software Defined Networking Bedienungsanleitung PDF herunterladen (Seite 15)

Multi-Service IronWare SDN Configuration Guide 5

53-1003034-02

Overview of OpenFlow

Brocade devices support the actions listed in Table 4.

OpenFlow Controller

Multiple controller connections can be used for redundancy purposes, such as when using a single

controller with multiple addresses. Multiple controller connections can also be used to support

active-standby controllers.

Regardless of the intended use of multiple controller connections, the Brocade device allows all the

controller connections to concurrently manage the flow table. That is, flow entries in the flow table

are not identified as belonging to any specific controller connection. In an active-standby controller

deployment, controllers themselves must coordinate their actions and active-standby states. The

Brocade device will respond to all connected controllers without distinction.

The Brocade device supports two types of controller connections (also called modes): active and

passive. An active connection is one for which the Brocade device will initiate (seek) the TCP

connection to a given OpenFlow Controller address. With a passive connection, the Brocade device

will passively wait for the controller to initiate (seek) the TCP connection to the Brocade device.

Active mode is commonly used with production controllers, while passive mode is commonly used

for testing purposes in experimental environments. Optionally, a controller connection can also use

SSL encryption.

OpenFlow counters

Brocade MLX Series and Brocade NetIron XMR devices record the number of received packets and

bytes on a per-flow basis. However, recording the number of received bytes on a per-flow basis is

only supported on ports on the 8x10G or 100G cards. Brocade NetIron CER and Brocade NetIron

CES devices record only the received packets on a per-flow basis—these devices do not record the

number of bytes per flow.

TABLE 4 OpenFlow actions supported on Brocade devices

OpenFlow action Brocade MLX

Series

Brocade NetIron

XMR

Brocade

NetIron CER

Brocade

NetIron CES

Forward a packet to a set of ports Yes Yes

Drop the packet Yes Yes

Add, modify, or remove VLAN ID or priority on a per destination port basis Yes Yes

Modify the IP DSCP (for a flow sending a copy of the packet to multiple

destinations, the DSCP modification must be the same for all destinations.

Modifying IP DSCP is only supported on ports enabled with Layer 3 mode.)

Yes No

Modify the source or destination MAC address (for a flow sending a copy of the

packet to multiple destinations, the MAC address modification must be the

same for all destinations).

Yes No

Send the packet to the controller (Packet In) Yes Yes

Receive the packet from the controller and send it to ports (Packet Out) Yes Yes

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