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Cisco Bug: CSCus80084 - Rectify CCO doc for 1Gig SPAN rate limit on Nexus 5500

Last Modified

Jul 13, 2017

Products (6)

  • Cisco Nexus 5000 Series Switches
  • Cisco Nexus 5596UP Switch
  • Cisco Nexus 5548P Switch
  • Cisco Nexus 5020 Switch
  • Cisco Nexus 5548UP Switch
  • Cisco Nexus 5010 Switch

Known Affected Releases

5.1(3)N1(1)

Description (partial)

CCO documentation correction

Symptom:
Nexus 5500 can SPAN traffic > 1Gbps and the limitation outlined in the document is not valid:
http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/system_management/513_n1_1/b_Cisco_n5k_system_mgmt_cg_rel_513_n1_1/b_Cisco_n5k_system_mgmt_cg_rel_513_n1_1_chapter_010000.html#task_E415220865A24BE5AE5148493A73A7BF

"On the Nexus 5500 series, SPAN traffic is rate-limited to 1Gbps by default so the switchport monitor rate-limit 1G interface command is not supported."

Conditions:
Nexus 5500 only have the following restrictions in respect to SPAN:
SPAN is rate-limited to 5 Gbps for every 8 ports (one ASIC).
RX-SPAN is rate-limited to 0.71 Gbps per port when the RX-traffic on the port exceeds 5 Gbps.
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