Technical data

Brocade MLX Series and NetIron Family Documentation Updates 59
53-1002805-03
CSPF limitation
1
CSPF limitation
NOTE
The following is a limitation of the MPLS CSPF fate-sharing group.
CSPF calculates the least cost paths first and then applies the hop limit on the paths.
Fabric Auto Tuning SNMP and syslog enhancement
The following section describes an enhancement to the existing Slow Rate CRC Link Monitoring
feature.
TABLE 19 Feature support table
NOTE
This feature is only applicable for 8x10G series, 2x100G, and FE600 cards when used in an MLXe
chassis.
If the total CRC errors in a monitoring period pass the link down threshold, it will start auto tuning
for that particular link instead of shutting down the link. After the completion of tuning, optimized
Rx parameters obtained from the DFE tuning algorithm are applied to that link and bring that link
up and ready to start transmit/receive traffic.
If the tuning algorithm returns error, depending sysmon tm link configuration, a syslog and trap
sent and the link may be powered down. If a fabric module/line card is replaced or power cycled,
this software starts freshly by allowing all links eligible for tuning again.
TM CLI command changes
The sysmon tm link command checks link status for errors such as slow rate CRCs on the TM
side of the link and starts tuning the link if the number of CRC errors in a monitoring period exceed
pre-defined threshold.
Brocade (config)# sysmon tm link
Syntax: [no] sysmon tm link
The default setting is enabled. Use the no command to disable the command.
Features
supported
Brocade
NetIron XMR
Series
Brocade
MLX Series
Brocade
NetIron CES
2000 Series
BASE
package
Brocade
NetIron CES
2000 Series
ME_PREM
package
Brocade
NetIron CES
2000 Series
L3_PREM
package
Brocade
NetIron CER
2000 Series
BASE
package
Brocade
NetIron CER
2000 Series
Advanced
Services
package
Fabric Auto
Tuning
enhancement
Yes Yes No No No No No