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Configuring Flow Specifications

On a QFabric system, enabling internal fabric monitoring using the ping and traceroute operations requires that a flow specification be configured in addition to a fabric maintenance association (FMA). A flow specification is used to determine the contents of the packet that is used for a particular operation. For example, an Ethernet type flow specification describes the contents of a pure Layer 2 packet, whereas an Ethernet IPv4 type flow specification describes an Ethernet IPv4 packet.

Note:

In the flow specification configuration, some parameters are optional. If you do not configure the optional parameters, the system generates random values that are used as PDU contents.

In order to replicate actual traffic behavior, internal fabric monitoring requires that the following flow specification fields be filled with the same values as the traffic packets:

  • Unicast Ethernet—Source MAC address, destination MAC address, Ethertype

  • Unicast IPv4—Source IP address, destination IP address, source L4 port, destination L4 port, destination MAC address

The configuration for each flow specification type includes parameters specific to that particular type. Use one of the following procedures to configure the flow specification for your flow type:

Configuring a Unicast Ethernet Flow Specification

This procedure describes how to configure a flow specification for a unicast Ethernet flow type. This configuration is applicable for the unicast ping and traceroute operations.

Note:

Some parameters are optional. If you do not configure the optional parameters, the system generates random values that are used as PDU contents.

In order to replicate actual traffic behavior, internal fabric monitoring requires that the following flow specification fields be filled with the same values as the traffic packets: source MAC address, destination MAC address, and Ethertype.

To configure a unicast Ethernet flow specification:

  1. Configure a flow specification name:
  2. (Optional) Set the Ethernet frame size:
  3. Set the flow specification type as unicast Ethernet and specify the EtherType:
  4. (Optional) Set the MAC address and the MAC address range of the source FMEP:
    Note:

    Configuration of the source-mac and source-mac-mask parameters is optional, but the source-mac-mask parameter can be specified only if the source-mac parameter is also configured.

  5. (Optional) Set the MAC address or address range mask for the destination FMEP:
    Note:

    Configuration of the destination-mac and destinastion-mac-mask parameters is optional, but the destination-mac-mask parameter can be specified only if the destination-mac parameter is also configured.

Configuring a Unicast Ethernet IPv4 Flow Specification

This procedure describes how to configure a flow specification for a unicast Ethernet IPv4 flow type. This configuration is applicable for the unicast ping and traceroute operations.

Note:

All parameters except the flow specification name are optional. If you do not configure the optional parameters, the system generates random values that are used as PDU contents.

In order to replicate actual traffic behavior, internal fabric monitoring requires that the following flow specification fields be filled with the same values as the traffic packets: source IP address, destination IP address, source L4 port, destination L4 port, destination MAC address.

To configure a unicast Ethernet IPv4 flow specification:

  1. Configure a flow specification name:
  2. (Optional) Set the Ethernet frame size:
  3. Set the flow specification type as unicast Ethernet IPv4:
  4. (Optional) Set the IPv4 address or the address range of the source FMEP:

    or

  5. (Optional) Set the IPv4 address or the address range of the destination FMEP:

    or

  6. (Optional) Set the IPv4 protocol type:
  7. (Optional) Set the L4 port (TCP or UDP port number) of the source FMEP:
  8. (Optional) Set the L4 port of the destination FMEP:

Configuring a Multicast IPv4 Flow Specification

This procedure describes how to configure a flow specification for a multicast IPv4 flow type.

Note:

Some parameters are optional. If you do not configure the optional parameters, the system generates random values that are used as PDU contents.

To configure a multicast IPv4 flow specification:

  1. Configure a flow specification name:
  2. Set the flow specification type as multicast IPv4:
  3. (Optional) Set the IPv4 address of the source FMEP:
  4. Set the IPv4 multicast group address:

Configuring a Multicast VLAN Flood Flow Specification

This procedure describes how to configure a flow specification for a multicast VLAN flood flow type.

To configure a multicast VLAN flood flow specification:

  1. Configure a flow specification name:
  2. Set the flow specification type as multicast VLAN flood:

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