Users Guide

10
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.
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
134
Isolated Networks for Aggregators