Changes and New Features

Self healing network with PFRN

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.

pfrn_sl

New

Number

SL for PFRN messages. Default 0

pfrn_mask_clear_timeout

New

Number

Time since last PFRN for an AR group to clear unused port masks. Default 180

pfrn_mask_force_clear_timeout

New

Number

Time since last mask clear, after which unused port mask is cleared by the switch. Default 720

n2n_key_enable

New

Number

Enable Node-to-Node Key (management class 0xC) configuration. Default 0 (Ignore)

n2n_key_protect_bit

New

Number

Protection level for class 0xC. Default 1

n2n_key_lease_period

New

Number

Lease period for class 0xC key. Default 60

n2n_max_outstanding_mads

New

Number

Maximum number of N2N MADs in the network at once. Default 500

enable_sm_port_failover

New

Boolean

Enable SM fail over to another port in case of link failure. Default is False

hbf_sl_mask

New

Boolean

SL mask for HBF. Default 0x0000 (Disabled)

hbf_hash_type

New

Number

HBF hash type. Default 0 (CRC)

hbf_seed_type

New

Number

HBF seed type. Default 0 (User defined seed)

hbf_seed

New

Number

Seed for HBF. Default 0xFFFFFFFF (Use switch GUID)

hbf_hash_fields

New

Number

Fields of packet for hash calculation. Default 0x40F00C0F

hbf_weights

New

String

Weights ratio between ports of different groups. Default 'auto' (Routing algorithm decision)

cache_ar_group_id

New

Boolean

Load GUID to AR group ID cache file on startup. Default TRUE

ar_tree_asymmetric_flow

Update

Number

Changed default to 1.

sm_stats_dump_per_sm_port

Update

Boolean

Changed default to TRUE,