Network Management Configuration Guide, Cisco IOS XE 17.17.x (Catalyst 9300 Switches) - Configuring SPAN and RSPAN

Publisher

Cisco Systems

URL

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9300/software/release/17-17/configuration_guide/nmgmt/b_1717_nmgmt_9300_cg/configuring_span_and_rspan.html

Published

unknown

Updated

unknown

Accessed

2026-09-24

HTTP status

200

License

Cisco copyright; no-redistribution; short excerpts and locators only

Source notes citing this source

• When a Catalyst 9300 port is configured as a SPAN destination, only monitored traffic passes through it. in context
• On Catalyst 9300 a SPAN destination is set with 'monitor session <n> destination interface <id>' and must be a physical port, not an EtherChannel or a VLAN. in context
• New SPAN commands do not remove previously configured SPAN parameters; 'no monitor session {<n> | all | local | remote}' deletes them. in context
• An oversubscribed SPAN destination, such as a slower port monitoring a faster one, can drop or lose packets. in context
• On Catalyst 9300 'show monitor' displays the current SPAN and RSPAN configuration. in context
• On Catalyst 9300 a SPAN source is set with 'monitor session <n> source {interface <id> | vlan <id>} [both | rx | tx]', and with no direction given both sent and received traffic are monitored. in context

Cite this source record

APA

WarmTransfer. (2026, September 24). Network Management Configuration Guide, Cisco IOS XE 17.17.x (Catalyst 9300 Switches) - Configuring SPAN and RSPAN. WarmTransfer. https://warmtransfer.net/knowledge/sources/cisco-cat9300-1717-span-rspan

BibTeX

@misc{warmtransfer-cisco-cat9300-1717-span-rspan,
  title  = {Network Management Configuration Guide, Cisco IOS XE 17.17.x (Catalyst 9300 Switches) - Configuring SPAN and RSPAN},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/sources/cisco-cat9300-1717-span-rspan},
  note   = {Cisco Systems, accessed 2026-09-24}
}