Changes and New Features

Self healing network with PFRN

[Beta] PFRN is used for fast link fault recovery. If a link fails or disconnects, switches send messages to the peer switches to update the routing tables.
This feature is supported only on ar_updn and ar_ftree routing engine and if all fabric switches support PFRN (NVIDIA Quantum and NVIDIA Quantum-2 switch systems only).
Feature control parameters:

• pfrn_sl - SL for PFRN messages (default SL 0).

• pfrn_mask_clear_timeout - Time-out since the last PFRN message received by the switch for an AR group, after which unused port masks will be cleared. The value is in multipliers of 30 seconds. (default 180)

• pfrn_mask_force_clear_timeout - Time-out since last mask clear operation, after which unused port masks are cleared by the switch. The value is in multipliers of 240 seconds. (default 720)

In order to disable PFRN, set shield_mode value to 2.

Multiport high availability

Allows SM to failover to another port in the case of SM link failure. It requires configuring more than one port GUID in the GUID parameter.

Feature control parameter:

• enable_sm_port_failover - Enable or disable failover (default FALSE).

Hash Based Forwarding (HBF)

Allows selection of the switch outgoing port for statically routed packets based on the packet's parameters (ECMP like).

With dfp2 routing engine, non-minhop routes will be used for static routing as well as for Adaptive Routing.

Feature control parameters:

• hbf_sl_mask - SLs supporting HBF (default 0).

• hbf_hash_type - Hash function for HBF

• • 0 - CRC (default).

  • 1 - XOR.

• hbf_seed_type - Hash seed type:

• • 0 - Seed (default).

  • 1 - Random.

• hbf_seed - Hash seed, 32 bit number:

• • 0xffffffff - Use switch GUID for seed (default).

  • 0x0-0xfffffffe - Specific seed value.

• hbf_hash_fields - Fields of packet for hash calculation (default 0x40F00C0F).
  hbf_weights - Weights ratio between ports of different AR sub-groups:

• • auto - SM/routing engine decision (default).

  • <sg0>,<sg1>,<sg2> - User defined weights for subgroup 0 to subgroup 2.

SA response time

Improved SA response time for multicast join requests during routing calculation.

Persistent mapping

Added support for persistent mapping between AR group ID and the destination switch GUID.

Switch SMA response MADs

Switch SMA response MADs are now routed using PLFT0 to overcome a firmware limitation in dfp2.

SM ports table

Added SM ports table to SMDB.

Log message verbosity

Changed verbosity of log message when toggling ports to INFO.

Port state report

Added the option to report to the log when failing to update port state from ARM to ACTIVE.

Virtualization traps

Added details for virtualization traps to the log file.

Statistics dump file per SM

Enabled statistics dump file per SM port by default.

Asymmetric flow algorithm for trees

Enabled asymmetric flow algorithm for trees (ar_updn and ar_ftree) by default.