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This document describes the configurations of Device Management, including device status query, hardware management, Stack, SVF, cloud-based management, PoE, monitoring interface, OPS, energy-saving management, information center, fault management, NTP, synchronous ethernet, PTP.
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S6720HI Service Port Stacking Support
S6720HI Service Port Stacking Support
For the cables that can be used as stack cables,
see "Cables" in the Hardware Description. Using other cables
may cause exceptions in the stack system, for example, frequent error-down
events on stack ports.
For stacking-supported service ports, some
of them can be used as stack ports, whereas some can be used as ordinary
service ports.
The first 12 10GE ports of the S6720-50L-HI-48S cannot be used as stack
member ports.
S6720HI series switches of all versions can set up stacks in service port
stacking mode using dedicated stack cables.
The number of stacked switches is recommended
to be 2 to 9.
Table 3-23 Service port stacking support
Device Series
Port Supporting Stacking
Stack Cable
Rate of a Single Port
Remarks
S6720HI
10GE ports on the front panel
1 m, 3 m, and 5 m SFP+ passive high-speed copper cables
10 m SFP+ active high-speed copper cables
3 m and 10 m AOC cables
10GE SFP+ optical module and optical fiber
0.5 m and 1.5 m SFP+ dedicated stack cable
10 Gbit/s
Any models of the S6720HI series can set up a stack.
Two types of ports on an S6720HI can both be configured
as stack member ports, but each logical stack port contains only the
same type of stack member ports.
When 10GE ports on the front panel are used as stack ports, a switch supports a maximum
of two logical stack ports, and each logical stack port supports at
least one stack member port and at most eight stack member ports.
A switch supports a maximum of 16 stack member ports.
When 40GE ports on the front panel are used as stack ports, a switch supports a maximum of two logical
stack ports, and each logical stack port supports at least one stack
member port and at most six stack member ports. Each switch can use
a maximum of six service ports as stack member ports.
When 100GE ports on the front panel are used as stack ports, a switch supports a maximum of two logical
stack ports, and each logical stack port supports a maximum of two
stack member ports. Each switch can use a maximum of two service ports
as stack member ports.
Only the last 16 10GE ports on the front panel
can be used to set up a stack using dedicated stack cables.
40GE ports do not support the stacking function
after they are split into 10GE ports.
When 100GE ports are used as stack member ports and are connected
using 1 m, 3 m, and 5 m QSFP+ passive cables or QSFP+ optical modules
(QSFP-40G-SR-BD not supported) and fibers, you can run the stack port speed command to reduce their working speed
from 100 Gbit/s to 40 Gbit/s. After their working speed is reduced
to 40 Gbit/s, switches using these ports can set up a stack with switches
using ports working at 40 Gbit/s and cannot set up a stack with switches
using ports working at 100 Gbit/s.
40GE ports on the front panel
1 m, 3 m, and 5 m QSFP+ passive high-speed copper cables
QSFP+ optical module (QSFP-40G-SR-BD not supported) and optical
fiber
