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Cisco Bug: CSCus95528 - SG300: anti-smartport macros return port back to default native VLAN.

Last Modified

Feb 16, 2018

Products (50)

  • Cisco Small Business 300 Series Managed Switches
  • Cisco SF500-48MP 48-port 10/100 Max PoE+ Stackable Managed Switch
  • Cisco SG500X-48 48-Port Gigabit with 4-Port 10-Gigabit Stackable Managed Switch
  • Cisco SG300-10 10-Port Gigabit Managed Switch
  • Cisco SF302-08MP 8-Port 10/100 Max PoE Managed Switch with Gigabit Uplinks
  • Cisco SG300-52 52-Port Gigabit Managed Switch
  • Cisco SG500-52P 52-port Gigabit POE Stackable Managed Switch
  • Cisco SF302-08 8-Port 10/100 Managed Switch with Gigabit Uplinks
  • Cisco SF500-24 24-Port 10/100 Stackable Managed Switch
  • Cisco SG300-10SFP 10-port Gigabit Managed SFP Switch
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Known Affected Releases

1.3.7.18 1.4.0.88

Description (partial)

Symptom:
If a customer is using his own macros for IP phone and desktop. Each access port has its own native VLAN different from the default VLAN. The behavior has changed from firmware 1.3.5 to 1.3.7 and 1.4. 

Whenever anti-macro is applied on the port, the port returns to the default native VLAN. The configuration on the interface level should not return to default native VLAN 1.

Conditions:
Lab reproduction steps:

SG300, IP phone, and PC.

1.	Use default switch configuration.
2.	Create voice VLAN and additional data VLAN ?30?.
3.	Go to smartport macro on the interface level.
4.	Assign IP phone + desktop macro to port and modify native VLAN to ?30?.
5.	Connect IP phone + PC to the port ? all works as expected.
6.	Disconnect IP phone and connect PC to the port directly ? PC MAC address is in VLAN ?1? instead of VLAN ?30?.
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Bug Details Include

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