Enable And Disable Vlan Flooding; Configuring Redundant Pairs - Dell Force10 Z9000 Configuration Manual

Enable and Disable VLAN Flooding

• ARP entries already resolved through the VLAN are deleted when the feature is enabled. This ensures
that ARP entries across the VLAN are consistent.
• All ARP entries learned after the feature is enabled are deleted when the feature is disabled, and RP2
triggers ARP resolution. The feature is disabled with the command
• When a port is added to the VLAN, the port automatically receives traffic if the feature is enabled. Old
ARP entries are not deleted or updated.
• When a member port is deleted, its ARP entries are also deleted from the CAM.
• Port channels in the VLAN also receive traffic.
• There is no impact on the configuration from saving the configuration.
• The feature is not reflected in the output of the
show ipf fib
command
The ARP entries exist in the secondary RPM CAM, so failover has no effect on the feature.

Configuring Redundant Pairs

Configuring Redundant Pairs
Networks that employ switches that do not support Spanning Tree (STP)—for example, networks with
Digital Subscriber Line Access Mutiplexers (DSLAM)—cannot have redundant links between switches
because they create switching loops
redundant links in networks that do not use STP by configuring backup interfaces for the interfaces on
either side of the primary link.
Note: For details on STP, see
Assign a backup interface to an interface using the command
remains in down state until the primary fails, at which point it transitions to up state. If the primary
interface fails, and later comes up, it becomes the backup interface for the redundant pair. FTOS supports
Gigabit, 10-Gigabit, and 40-Gigabit interfaces as backup interfaces.
You must apply all other configurations to each interface in the redundant pair such that their
configurations are identical, so that transition to the backup interface in the event of a failure is transparent
to rest of the network.
.
is supported on platforms:
(Figure 24-7). The Redundant Pairs feature enables you to create
Chapter 44, "Spanning Tree Protocol (STP)," on page
no vlan-flooding
show arp
command but is reflected in the output of the
e c s
switchport backup
.
z
875.
. The backup interface
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