Chapter 90 Verifying Rate Limiting Configuration; Verifying That Unknown Unicast Packets Are Forwarded To A Trunk Interface - Juniper JUNOS OS 10.3 - SOFTWARE Manual

CHAPTER 90
Verifying Rate Limiting Configuration

Verifying That Unknown Unicast Packets Are Forwarded to a Trunk Interface

Purpose
Action
Meaning
Copyright © 2010, Juniper Networks, Inc.
Verifying That Unknown Unicast Packets Are Forwarded to a Trunk Interface on page 2797
Verifying That the Port Error Disable Setting Is Working Correctly on page 2798
Verify that a VLAN is forwarding all unknown unicast packets (those with unknown
destination MAC addresses) to a single trunk interface instead of flooding unknown
unicast packets across all interfaces that are members of the same VLAN.
Display the forwarding interface for unknown unicast packets for a VLAN (here, the VLAN
name is ):
v1
user@switch> show configuration ethernet-switching-options
unknown-unicast-forwarding {
vlan v1 {
interface ge-0/0/7.0;
}
}
Display the Ethernet switching table:
user@switch> show ethernet-switching table vlan v1
Ethernet-switching table: 3 unicast entries
VLAN MAC address
v1 *
v1 00:01:09:00:00:00 Learn
v1 00:11:09:00:01:00 Learn
The sample output from the
shows that the unknown unicast forwarding interface for VLAN
The
show ethernet-switching table
is received on interface
ge-0/0/3
00:01:09:00:00:00 and the source MAC address (SMAC) of
shows that the SMAC of the packet is learned in the normal way (through the interface
), while the DMAC is learned on interface
ge-0/0/3.0
Type
Flood
show configuration ethernet-switching-options
command shows that an unknown unicast packet
with the destination MAC address (DMAC)
ge-0/0/7
Age Interfaces
- All-members
24 ge-0/0/7.0
37 ge-0/0/3.0
command
v1 is interface ge-0/0/7
00:11:09:00:01:00 . This
.
.
2797