Disabling Mac Address Learning - Dell PowerConnect J-EX4200-24T Software Manual

Dell PowerConnect J-Series Ethernet Switch Complete Software Guide for Junos OS

Disabling MAC Address Learning

Mapping C-VLANs to S-VLANs
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You can use the native option to specify an S-VLAN for untagged and priority tagged
packets when using many-to-one bundling and mapping a specific interface approaches
to map C-VLANs to S-VLANs. Otherwise the packets are discarded. The
not available for all-in-one bundling because there is no need to specify untagged and
priority tagged packets when all packets are mapped to the C-VLAN. See the Mapping
C-VLANs to S-VLANs section of this document for information on the methods of mapping
C-VLANs to S-VLANs.
Firewall filters allow you to map an interface to a VLAN based on a policy. Using firewall
filters to map an interface to a VLAN is useful when you want a subset of traffic from a
port to be mapped to a selected VLAN instead of the designated VLAN. To configure a
firewall filter to map an interface to a VLAN, the
of the firewall filter and the
configuration for each logical interface using the filter.
In a Q-in-Q deployment, customer packets from downstream interfaces are transported
without any changes to source and destination MAC addresses. You can disable MAC
address learning at both the interface level and the VLAN level. Disabling MAC address
learning on an interface disables learning for all the VLANs of which that interface is a
member. When you disable MAC address learning on a VLAN, MAC addresses that have
already been learned are flushed.
If you disable MAC address learning on an interface or a VLAN, you cannot include MAC
move limiting or 802.1X authentication in that same VLAN configuration.
When a routed VLAN interface (RVI) is associated with either an interface or a VLAN on
which MAC address learning is disabled, the Layer 3 routes resolved on that VLAN or that
interface are not resolved with the Layer 2 component. This results in routed packets
flooding all the interfaces associated with the VLAN.
There are three ways to map C-VLANs to an S-VLAN:
All-in-one bundling—Use the
VLANs. All packets from all access interfaces are mapped to the S-VLAN.
Many-to-one bundling—Use the
mapped to the S-VLAN.
Mapping a specific interface—Use the
for a given C-VLAN. The specified C-VLAN applies to only one VLAN and not all access
interfaces as in the cases of all-in-one and many-to-one bundling.
option has to be configured as part
vlan
option must be specified in the interface
mapping policy
dot1q-tunneling option to map without specifying customer
option to specify which C-VLANs are
customer-vlans
option to indicate a specific S-VLAN
mapping
option is
native