Inspecting The Private Vlan Configuration - Dell C9000 Series Networking Configuration Manual

• The ports in isolated VLAN 4003 can only communicate with the promiscuous ports in the primary
VLAN 4000.
• 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 local-proxy-
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.
Private VLANs (PVLAN) 903