3Com Switch 7750 Configuration Guide

Configuring Smart Link 927
Precautions When configuring Smart Link, pay attention to the following points:
1 A port or a link aggregation group cannot serve as a member port for two Smart
Link groups. On the other hand, a port or a link aggregation group cannot serve as
a member for a Smart Link group and a Monitor Link group at the same time.
2 STP cannot be enabled on the member ports of a Smart Link group. An
STP-enabled port or a link aggregation group with an STP-enabled port cannot
serve as a member port for a Smart Link group.
3 A Smart Link/Monitor Link group with members cannot be deleted.
4 Smart Link/Monitor Link is mutually exclusive with remote port mirroring.
5 When you copy a port, the Smart Link/Monitor Link group member information
configured on the port will not be copied to other ports.
6 If a single port is specified as a member of a Smart Link/Monitor Link group, you
cannot execute the lacp enable command on this port or add this port into other
dynamic link aggregation groups, because these operations will make this port
become a link aggregation group member.
7 If no control VLAN is configured for flush message processing, the device will
forward received flush messages without processing them.
8 If the control VLAN for receiving flush messages configured on an associated
device is different than the one for sending flush messages configured on the
corresponding Smart Link device, the device will forward received flush messages
without processing them.
9 In the static or manual link aggregation group which serves as a Smart Link group
member, if a member port can process flush messages, this function cannot be
synchronized to the other ports in the aggregation group automatically, that is,
the other member ports in the aggregation group cannot process flush messages.
The function of processing flush messages must be manually configured for each
port in the aggregation group.
10 The VLAN configured as a control VLAN to send and receive flush messages must
exist. You cannot directly remove the control VLAN. When a dynamic VLAN is
configured as the control VLAN for the Smart Link group, this VLAN will become a
static VLAN, and the prompt information is displayed.
Table 717 Enable the specified port to process flush messages received from the specified
control VLAN
Operation Command Remarks
Enter system view system-view -
Enable the specified
port(s) to process
flush messages
received from the
control VLAN
System view smart-link flush enable
control-vlan vlan-id
port interface-type
interface-number [ to
interface-type
interface-number ]
Required, use either
approach.
By default, no control
VLAN for receiving flush
messages is specified.
Ethernet port
view
interface interface-type
interface-number
smart-link flush enable
control-vlan vlan-id