DELL S50V User Manual
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Layer 2
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Figure 25-6. Server Cluster: Failover and Balancing Preserved with the vlan-flooding Command
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.
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
triggers ARP resolution. The feature is disabled with the command
no vlan-flooding
.
•
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.
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 arp
command but is reflected in the output of the
command
show ipf fib
.
The ARP entries exist in the secondary RPM CAM, so failover has no effect on the feature.
Client
Data
vlan-flooding configured
fnC0029mp
Source MAC: MACCluster
Destination MAC: MACClient
Source IP: IPS1
Source MAC: MACS1
Type: 0x0806
Pad
CRC
Ethernet Frame Header
ARP Reply
MACS1
Server1:
IPS1
MACS2
IPS2
Server2:
Microsoft Server Cluster: IPCluster
MACCluster
MACS3
IPS3
Server3:
MACS4
IPS4
Server4:
VLAN 1