Hot Swapping And Vlans; Hot Swapping With Stp, Rstp, And Mstp - Allied Telesis AT-8400 Series Reference Manual

Installing and Removing Line Cards
Hot Swapping
and VLANs
Hot Swapping
with STP, RSTP,
and MSTP
80
For AT-8413 port trunk, all ports that are included in the trunk must
belong to different line cards. As a result, when you remove an AT-8413
line card that is included in a port trunk, the port on the AT-8413 line
card that you removed is dropped from the port trunk. Although, the
software configuration for that port on the original port trunk is
preserved.
However, ports that are included in the port trunk on AT-8413 line cards
that were not replaced are retained. For example, if you have three AT-
8413 ports in a trunk and you remove one, then the port on the AT-8413
that you removed is dropped from the trunk but the other two remain. If
you replace the AT-8413 with another AT-8413, the original port trunk is
restored.
If you replace the AT-8413 with a line card of a different type, for
example, an AT-8411 line card, then the AT-8411 line card does not
become a member of the original port trunk. In addition, after you have
installed the AT-8411 and click Save Configuration changes at the
Main Menu, the port trunk configuration information is lost.
You can use the AT-S60 software to create VLANs on AT-8400 Series
switches. If you have configured ports on a line card to be included in a
VLAN, when you remove the line card the ports included in the VLAN
become inactive. However, the VLAN configuration is saved on the AT-
8401 management card. If you replace a line card with a line card of the
same type, the ports on the new line card are assigned to the same VLAN
as the ports on the card it replaced.
If you replace a line card with a line card of a different type and then
select Save Configuration changes from the Main Menu, the ports on
the new line card are automatically assigned to the Default_VLAN.
You can use the STP, RSTP, and MSTP features to assign port priority to
individual ports on a line card. When you remove a line card, the port
priority that you assigned to each port on the line card is dropped.
However, the software configuration for port priority is preserved. When
you install a line card of the same type, the configuration of port priority
is restored.
If you replace a line card with a line card of a different type and then
select Save Configuration changes from the Main Menu, the port
priority configuration changes are lost