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Isolated Networks for Aggregators
An Isolated Network is an environment in which servers can only communicate with the uplink interfaces and not with each
other even though they are part of same VLAN. If the servers in the same chassis need to communicate with each other, it
requires a non-isolated network connectivity between them or it needs to be routed in the TOR.
Isolated Networks can be enabled on per VLAN basis. If a VLAN is set to be isolated, all the packets of originating from the
server ports for that VLAN (Isolated Network) will be redirected to uplink LAG, including the packets destined for the server
ports on the same blade.
ToR applies required ACLs and other necessary actions before sending the packet to destination. If the packet is destined to
server on the same IOA blade, it is routed back on the uplink lag where it was received. Traffic that hits at the uplink ports are
regularly switched based on the L2 MAC lookup. Unknown Unicast and Multicast packets from Uplink Port towards server port
on an isolated network enabled VLAN, is dropped.
The isolated network feature is supported only in the standalone mode.
Isolated network is currently not supported in the following modes:
VLT mode
Stacking mode
PMUX mode
NOTE:
Isolated Networks is not enabled for FCOE VLANs and on default VLAN. It can be managed via CLI or AFM. For
more information, refer to AFM user manual.
Topics:
Configuring and Verifying Isolated Network Settings
Configuring and Verifying Isolated Network Settings
Enable the isolated-network functionality for a particular VLAN or a set of VLANs using below command:
Dell(conf)#io-aggregator isolated-network vlan <vlan-range>
To disable the isolated-network functionality, use the no form of command.
Dell(conf)#no io-aggregator isolated-network vlan <vlan-range>
To display the VLANs that are configured to be part of an isolated network on the Aggregator, use the below command.
Dell#show io-aggregator isolated-networks
Isolated Network Enabled VLANs : 5-10
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Isolated Networks for Aggregators 427