Configuring Private VLANs

Restrictions for Private VLANs

Restrictions for Private VLANs

The following are restrictions for configuring private VLANs:

•Private VLANs are only supported on switches running the IP Lite image.

Limitations with Other Features

When configuring private VLANs, remember these limitations with other features:

Note In some cases, the configuration is accepted with no error messages, but the commands have no effect.

•Do not configure fallback bridging on switches with private VLANs.

•When IGMP snooping is enabled on the switch (the default), the switch or switch stack supports no more than 20 private VLAN domains.

•Do not configure a remote SPAN (RSPAN) VLAN as a private VLAN primary or secondary VLAN.

•Do not configure private VLAN ports on interfaces configured for these other features:

◦Dynamic-access port VLAN membership

◦Dynamic Trunking Protocol (DTP)

◦Port Aggregation Protocol (PAgP)

◦Link Aggregation Control Protocol (LACP)

◦Multicast VLAN Registration (MVR)

◦Voice VLAN

◦Web Cache Communication Protocol (WCCP)

•You can configure IEEE 802.1x port-based authentication on a private VLAN port, but do not configure 802.1x with port security, voice VLAN, or per-user ACL on private VLAN ports.

•A private VLAN host or promiscuous port cannot be a SPAN destination port. If you configure a SPAN destination port as a private VLAN port, the port becomes inactive.

•If you configure a static MAC address on a promiscuous port in the primary VLAN, you must add the same static address to all associated secondary VLANs. If you configure a static MAC address on a host port in a secondary VLAN, you must add the same static MAC address to the associated primary VLAN. When you delete a static MAC address from a private VLAN port, you must remove all instances of the configured MAC address from the private VLAN.

 

Catalyst 2960-XR Switch VLAN Configuration Guide, Cisco IOS Release 15.0(2)EX1

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Cisco Systems WSC2960XR48FPSI manual Restrictions for Private VLANs, Limitations with Other Features
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WSC2960XR48FPSI specifications

The Cisco WSC2960XR48FPSI is an advanced, high-performance switch that plays a vital role in today's enterprise networking environments. Designed for reliability and efficiency, it serves as a foundational component for organizations concentrating on network agility and scalability.

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