POE & Stack For 3750

环境：

5台3750堆叠。

------------------ show switch detail ------------------


Switch/Stack Mac Address : 001d.a224.0400
H/W Current
Switch# Role Mac Address Priority Version State
----------------------------------------------------------
*1 Master 001d.a224.0400 14 0 Ready
2 Member 001d.a23c.ff80 12 0 Ready
3 Member 001d.e516.f880 10 0 Ready
4 Member 001d.a223.fb00 8 0 Ready
5 Member 001d.a23c.df80 6 0 Ready



Stack Port Status Neighbors
Switch# Port 1 Port 2 Port 1 Port 2
--------------------------------------------------------
1 Ok Ok 2 5
2 Ok Ok 3 1
3 Ok Ok 4 2
4 Ok Ok 5 3
5 Ok Ok 1 4

问题：

1. 其中一台3750的多个端口POE失效。
2. POE Failure的端口可以正常转发数据。
3. 以下是客户的邮件：

1. There is no information desplayed on the LCD Screen of the IP Phone. As far as i know, the headset/mute/spraker buttons on the phone will flash in turn when connnected to the good port. But there is no response when we connected the good phone directly to the 7 ports.

2. So far there are 7 ports on this switch can not supply the IP Phones.
P14/15/16/17/43/45/46.

3. The IP Phones/RJ-45 Lines/config file of the switch are all well.

解决问题：

让客户采集必要的POE的相关信息：

1\ Captrue the information for "show int f3/0/14 transceiver properties" and "show power inline f3/0/14 " when insert the ip phone into the port.

2\ Captrue the information for "show int fx/0/x transceiver properties" and "show power inline fx/0/x " for good port.

以下是信息：

#show int f3/0/14 transceiver properties
Diagnostic Monitoring is not implemented.
Name : Fa3/0/14
Administrative Speed: auto
Administrative Duplex: auto
Administrative Auto-MDIX: on
Administrative Power Inline: enable
Operational Speed: auto
Operational Duplex: auto
Operational Auto-MDIX: on
Media Type: 10/100BaseTX

#show power inline f3/0/14
Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- -------------------
Fa3/0/14 auto off 0.0 n/a n/a 15.4

Interface AdminPowerMax AdminConsumption
(Watts) (Watts)
---------- --------------- --------------------

Fa3/0/14 15.4 15.4

++++++++++++++++++++++++++++++++++++++++

#sh interfaces f3/0/13 transceiver properties
Diagnostic Monitoring is not implemented.
Name : Fa3/0/13
Administrative Speed: auto
Administrative Duplex: auto
Administrative Auto-MDIX: on
Administrative Power Inline: enable
Operational Speed: 100
Operational Duplex: full
Operational Auto-MDIX: on
Media Type: 10/100BaseTX

#sh power inline f3/0/13
Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- -------------------
Fa3/0/13 auto on 6.3 IP Phone 7940 n/a 15.4

Interface AdminPowerMax AdminConsumption
(Watts) (Watts)
---------- --------------- --------------------

Fa3/0/13 15.4 15.4

POE端口供电问题，可能供电芯片损坏，更换备件。

客户解决中的问题：

对于堆叠的交换机，如何进行割接更换？

Follow information is step for cut over:

1\ Backup the Master config to flash.

#copy run flash

2\ Upgrade the IOS for RMA part.

#archive upload-sw tftp://172.16.2.155/c3750-ipbasek9-mz.122-40.SE.tar
!--- upload the ios to tftp
#archive download-sw /leave-old-sw /reload tftp://172.16.2.155/c3750-ipbasek9-mz.122-40.SE.tar
!--- download-sw Download a new copy of software from a server
!--- /leave-old-sw Leave old sw installed after successful sw upgrade
!--- /reload Reload system (if no unsaved config changes) after successful sw upgrade

3\ Change the New part SW priority:

Switch#sh sw
Switch/Stack Mac Address : 0016.9de7.ea00
H/W Current
Switch# Role Mac Address Priority Version State
----------------------------------------------------------
*1 Master 0016.9de7.ea00 10 0 Ready
Switch#config ter
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#sw 1 pri 1
Changing the Switch Priority of Switch Number 1 to 1
Do you want to continue?[confirm]
New Priority has been set successfully
Switch(config)#end
Switch#
Switch#sh sw
Switch/Stack Mac Address : 0016.9de7.ea00
H/W Current
Switch# Role Mac Address Priority Version State
----------------------------------------------------------
*1 Master 0016.9de7.ea00 1 0 Ready
#wr

4\ Power down and join the stack.

5\ Power on.


关于堆叠的一些基础知识：

在LAB中，3台3750堆叠：

1. 加台新设备，如果带电加，可能会导致其他设备重启，这样如果新SW优先级大，他会同步其他两台设备的配置。不加电入网，不会影响堆叠：
Switch#sh sw
Switch/Stack Mac Address : 0016.9de7.ea00
H/W Current
Switch# Role Mac Address Priority Version State
----------------------------------------------------------
*1 Master 0016.9de7.ea00 10 0 Ready
2 Member 0016.9df2.6480 2 0 Ready
3 Member 0012.4306.6380 14 0 Ready

2. 堆叠成功后，配置及文件名都被同步，3台设备的Console口信息都是相同的，而且均是Master的。

3. 上面的1，2，3是逻辑的，所以不能从这上面判断现实中的交换机（比如说1，有可能在现实中是中间的交换机）。所以在排除故障是，只能根据序列号来判定具体是哪台交换机故障。

4. 把3下架后，console进去：
c3750-2#sh sw
Switch/Stack Mac Address : 0012.4306.6380
H/W Current
Switch# Role Mac Address Priority Version State
----------------------------------------------------------
1 Member 0000.0000.0000 0 0 Provisioned
2 Member 0000.0000.0000 0 0 Provisioned
*3 Master 0012.4306.6380 3 0 Ready

配置及端口信息仍然存在。

在另外两台堆叠SW上：
c3750-2#sh sw
Switch/Stack Mac Address : 0016.9de7.ea00
H/W Current
Switch# Role Mac Address Priority Version State
----------------------------------------------------------
*1 Master 0016.9de7.ea00 10 0 Ready
2 Member 0016.9df2.6480 2 0 Ready
3 Member 0000.0000.0000 0 0 Provisioned