Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 837
Inspecting the Private VLAN Configuration, Security, Dell Networking OS Command Line, Reference Guide
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• All the ports in the secondary VLANs (both community and isolated VLANs) can only communicate with ports in the other secondary VLANs of that PVLAN over Layer 3, and only when the ip localproxy-arp command is invoked in the primary VLAN. NOTE: Even after you disable ip-local-proxy-arp (no ip-local-proxy-arp) in a secondary VLAN, Layer 3 communication may happen between some secondary VLAN hosts, until the ARP timeout happens on those secondary VLAN hosts. In parallel, on S50-1: • Te 0/3 is a promiscuous port and Te 0/25 is a PVLAN trunk port, assigned to the primary VLAN 4000. • Te 0/4-6 are host ports. Te 0/4 and Te 0/5 are assigned to the community VLAN 4001, while Te 0/6 is assigned to the isolated VLAN 4003. The result is that: • The S50V ports would have the same intra-switch communication characteristics as described for the C300. • For transmission between switches, tagged packets originating from host PVLAN ports in one secondary VLAN and destined for host PVLAN ports in the other switch travel through the promiscuous ports in the local VLAN 4000 and then through the trunk ports (0/25 in each switch). Inspecting the Private VLAN Configuration The standard methods of inspecting configurations also apply in PVLANs. To inspect your PVLAN configurations, use the following commands. • Display the specific interface configuration. INTERFACE mode and INTERFACE VLAN mode show config • Inspect the running-config, and, with the grep pipe option, display a specific part of the running- config. show running-config | grep string The following example shows the PVLAN parts of the running-config from the S50V switch in the topology diagram previously shown. • Display the type and status of the configured PVLAN interfaces. show interfaces private-vlan [interface interface] This command is specific to the PVLAN feature. For more information, refer to the Security chapter in the Dell Networking OS Command Line Reference Guide. • Display the configured PVLANs or interfaces that are part of a PVLAN. show vlan private-vlan [community | interface | isolated | primary | primary_vlan | interface interface] This command is specific to the PVLAN feature. The following examples show the results of using this command without the command options in the topology diagram previously shown. • Display the primary-secondary VLAN mapping. The following example shows the output from the S50V. Private VLANs (PVLAN) 837
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