Inserting two more switches into a stack system

Issue Description

This is guide about how to add two more switches into a stacking system avoiding business impact.  We will use S5700 LI switches and we will use service interfaces.

Let’s consider the following stacking system composed by S5700 LI switches connected using service interfaces.

QQ图片20170801145938

Stack port configuration:

QQ图片20170801150031

Alarm Information

none.

Handling Process

We will need to add the third unit  SWT3 (S5700LI) having below stack-port configuration and using Xgi2/0/4 we will connect it to xGi1/0/3.

QQ图片20170801150109

Steps:
1. Add Xgi1/0/3 to stack-port 1/1

QQ图片20170801150147

2. Save and power off SWT3
3. Plug in the stack cable. (between XGigabitEthernet2/0/4 and XGigabitEthernet1/0/3)
4. Power on SWT3

SWT1 and SWT2 are still running.
The new stack system, with 3 switches.

QQ图片20170801150515

The stack-port configuration:

QQ图片20170801150734

Now we will add the forth unit SWT4. We will configure stack-port as below, using XGigabitEthernet3/0/4 to connect with XGigabitEthernet2/0/3.

QQ图片20170801150831

Steps:
1. save and power off SWT4
2. plug the stack cable between Xgi3/0/4 and Xgi2/0/3
3. power on SWT4.

The stack system is still running while adding the new device.QQ图片20170801150920

wait for a couple of minutes….
Finish!

QQ图片20170801151020

Stack port configuration:

QQ图片20170801151114

Stack topology:

QQ图片20170801151149

Hope you will find this case useful!

Root Cause

none.

Suggestions

none

S5700-LI:

S5700-28P-LI-AC

S5700-28P-LI-DC

S5700-28X-LI-24S-AC

S5700-28X-LI-AC

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