SMON Priority and VLAN Statistics Counting

SMON is a set of RMON MIB extensions for switch monitoring. The S- K- and 7100-Series supports the enabling and display of SMON Ethernet priority and VLAN statistics counters. SMON is described by RFC 2613. An SMON session for a specified port or range of ports is first created and then enabled before statistics are collected.

The S- K- and 7100-Series platforms supports a maximum of 16 SMON switch-wide VLAN sessions. ON the 7100-Series, SMON switch-wide VLAN session use VTAP ports. The S- and K-Series platforms supports 128 SMON priority sessions. The 7100-Series platform supports 28 SMON priority sessions. On the 7100-Series platform, Port-VLAN sessions for physical ports and LAGs are not supported. Resources available to SMON priority and VLAN sessions are shared with other SMON tasks and port mirroring. Packets that match multiple SMON sessions may be counted in only one of them. Depending upon your configuration needs, you may not be able to configure the maximum number of supported SMON VLAN or priority sessions.

Use the set smon priority create and set smon vlan create commands to create priority and VLAN SMON sessions for the specified port(s) on the switch.

Use the set smon priority enable and set smon vlan enable commands to enable existing priority and VLAN SMON sessions for the specified port(s) on the switch.

The following example:

• Creates an SMON priority session for port ge.1.1
• Enables SMON priority for port ge.1.1
• Displays statistics for priority 0 for the enabled port:

  System(rw)->set smon priority create ge.1.1
  System(rw)->set smon priority enable ge.1.1
  System(rw)->show smon priority ge.1.1 priority 0
  Show Priority Statistics
  ------------------------
  Interface = ge.1.1
  Owner     = none
  Creation  = 0 days 0 hours 37 minutes 36 seconds
  Status    = enabled
  --------------------
  Priority 0 Packets              Octets
  ----------
  Total      3477                 256168
  Overflow   0                    0
  System(rw)->

The following S- and K-Series example:

• Creates an SMON VLAN session for port ge.1.1
• Enables SMON VLAN monitoring for port ge.1.1
• Displays statistics for VLAN 1 for the enabled port:

  System(rw)->set smon vlan create ge.1.1
  System(rw)->set smon vlan enable ge.1.1
  System(rw)->show smon vlan vlan 1
  Show VLAN Statistics
  --------------------
  Interface = ge.1.1
  Owner     = none
  Creation  = 20 days 1 hours 44 minutes 27 seconds
  Status    = enabled
  --------------------
  VLAN 1                Packets                Octets
  Total                 3728                   433041
  Overflow              0                      0
  NonUnicast            2660                   174336
  NonUnicast Overflow   0                      0
  System(rw)->

The following 7100-Series example:

• Creates an SMON VLAN session for VLAN vtap.0.1
• Enables SMON VLAN monitoring for VLAN vtap.0.1
• Displays statistics for VLAN 1:

  System(rw)->set smon vlan create vtap.0.1
  System(rw)->set smon vlan enable vtap.0.1
  System(rw)->show smon vlan 1
  Show VLAN Statistics
  --------------------
  Interface = vtap.0.1
  Owner     = none
  Creation  = 20 days 1 hours 44 minutes 27 seconds
  Status    = enabled
  --------------------
  VLAN 1                Packets                Octets
  Total                 3728                   433041
  Overflow              0                      0
  NonUnicast            2660                   174336
  NonUnicast Overflow   0                      0
  System(rw)->