Dell PowerEdge FX2/FX2s - Manual (Page 268)

0/5(Up)
Te 0/6(Dwn) Te 0/7(Dwn) Te 0/8(Up)
2. Verify that the downstream port channel in the top-of-rack switch that connect to the Aggregator is
configured correctly.
Broadcast, unknown multicast, and DLF packets switched at a very low rate
Symptom: Broadcast, unknown multicast, and DLF packets are switched at a very low rate.
By default, broadcast storm control is enabled on an Aggregator and rate limits the transmission of
broadcast, unknown multicast, and DLF packets to 1Gbps. This default behavior is designed to avoid
unnecessarily flooding these packets on all (4094) VLANs on all Aggregator interfaces (default
configuration).
Resolution: Disable broadcast storm control globally on the Aggregator.
Steps to Take:
1. Display the current status of broadcast storm control on the Aggregator (show io-aggregator
broadcast storm-control status command).
Dell#show io-aggregator broadcast storm-control status
Storm-Control Enabled
Broadcast Traffic limited to 1000 Mbps
2. Disable broadcast storm control (no io-aggregator broadcast storm-control command) and re-
display its status.
Dell#config terminal
Dell(conf)#no io-aggregator broadcast storm-control
Dell(conf)#end
Dell#show io-aggregator broadcast storm-control status
Storm-Control Disabled
Flooded packets on all VLANs are received on a server
Symptom: All packets flooded on all VLANs on an Aggregator are received on a server, even if the server
is configured as a member of only a subset of VLANs. This behavior happens because all Aggregator ports
are, by default, members of all (4094) VLANs.
Resolution: Configure a port that is connected to the server with restricted VLAN membership.
Steps to Take:
1. Display the current port mode for Aggregator L2 interfaces (show interfaces switchport interface
command)..
Dell#show interfaces switchport tengigabitethernet 0/1
Codes: U - Untagged, T - Tagged
x - Dot1x untagged, X - Dot1x tagged
G - GVRP tagged, M - Trunk, H - VSN tagged
i - Internal untagged, I - Internal tagged, v - VLT untagged, V -
VLT tagged
Name: TenGigabitEthernet 0/1
802.1QTagged: Hybrid
SMUX port mode: Auto VLANs enabled
Vlan membership:
Q Vlans
268 Debugging and Diagnostics