Increase the Number of SPB Nodes per Area

Note

Note

This procedure only applies to 5320 Series and 5420 Series.

Perform this procedure to increase the number of SPB nodes per area that the switch supports. For more information about maximum scaling numbers, see Fabric Engine Release Notes.

About this task

If you enable this boot config flag, it decreases the scaling limits for the following features:

  • Switched UNI (S-UNI) endpoints

  • Layer 2 and Layer 3 I-SIDs

  • IP Multicast over Fabric Connect local streams

The scaling numbers for the following items are limited by the use of a shared hardware resource, and thus they affect one another:

  • the number of SPB nodes per area

  • the number of SPB nodes that send IP Multicast streams that the local BEB receives

  • local SPB services:

    • Layer 2 I-SIDs

    • Layer 3 I-SIDs

    • IP Multicast over Fabric Connect remote IP Multicast stream data I-SIDs

    • I-SID mirroring instances

If you enable this boot config flag:

  1. The switch supports up to 500 nodes per area.

  2. The switch supports up to 200 nodes per area, when all of them are concurrently sending IP Multicast over Fabric Connect streams while local BEB receives.

  3. The switch supports a maximum of 500 Switched UNI (S-UNI) endpoints.

If you disable this boot config flag (default configuration):

  1. The switch supports up to 350 nodes per area.

  2. The switch supports up to 150 nodes per area, when all of them are concurrently sending IP Multicast over Fabric Connect streams while local BEB receives.

  3. The switch supports a maximum of 1,000 Switched UNI (S-UNI) endpoints.

Procedure

  1. Enter Global Configuration mode:

    enable

    configure terminal

  2. Increase the number of supported SPB nodes per area:

    boot config flags spbm-node-scaling

  3. Verify the configuration:

    show boot config flags

  4. Save the configuration:

    save config

  5. Restart the switch for the change to take effect:

    reset

Example

Enable the boot config flag to increase the number of SPB nodes per area that switch supports.

Switch:1>en
Switch:1#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Switch:1(config)#boot config flags spbm-node-scaling
Switch:1(config)#save config
Switch:1(config)#reset

Warning: Please save the configuration and reboot the switch
         for this configuration to take effect.
Note

Note

Flag support can vary across hardware models. 

Switch:1#show boot config flags
flags advanced-feature-bandwidth-reservation low
flags block-snmp false
flags debug-config false
flags debugmode false
flags dvr-leaf-mode false
flags enhancedsecure-mode false
flags factorydefaults false
flags flow-control-mode true
flags ftpd true
flags hsecure false
flags ipv6-egress-filter true
flags ipv6-mode false
flags logging true
flags macsec false
flags nni-mstp false
flags reboot true
flags spanning-tree-mode mstp
flags spbm-config-mode true
flags spbm-node-scaling true
flags sshd true
flags syslog-rfc5424-format true
flags telnetd true
flags tftpd true
flags trace-logging false
flags urpf-mode true
flags verify-config true
flags vrf-scaling true
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