运行 2 台新交换机 Cisco 3850 - stackwise 480。当我将 PoE 分离器插入交换机时，它工作正常。
Cisco IOS Software [Everest], Catalyst L3 Switch Software (CAT3K_CAA-UNIVERSALK9-M), Version 16.6.1, RELEASE SOFTWARE (fc2)
3850s 链接到两组新的 3 x 2960s 堆叠。当我将同一个 PoE 分离器插入 2960 交换机时，它会打开/关闭/打开/关闭。
Cisco IOS Software, C2960X Software (C2960X-UNIVERSALK9-M), Version 15.2(2)E7, RELEASE SOFTWARE (fc3)
已将千兆接口 3/0/5 端口静态设置为 15400，但没有运气。千兆接口 3/0/5 连接到功率分配器。
2960x 可以毫无问题地通过 PoE 为各种安讯士摄像机供电。大量可用的 PoE 预算。
使用debug ilpower命令输出：
CABB_SW#debug ilpower event
ILPOWER event debugging is on
CABB_SW#
Aug 24 10:34:47.027: ILP uses DC Disconnect(Gi3/0/20): state= ILP_DETECTING_S, event= DISABLE_DTE_TIMER_EV
Aug 24 10:34:48.128: ILP uses DC Disconnect(Gi3/0/20): state= ILP_DETECTING_S, event= ILP_IEEE_DET_SHORT_EV
**Aug 24 10:34:58.544: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet3/0/5, changed state to down
Aug 24 10:34:59.550: %LINK-3-UPDOWN: Interface GigabitEthernet3/0/5, changed state to down
Aug 24 10:35:01.550: ILP uses DC Disconnect(Gi3/0/5): state= ILP_LINK_UP_S, event= PHY_LINK_DOWN_EV**
Aug 24 10:35:03.130: ILP uses DC Disconnect(Gi3/0/20): state= ILP_DETECTING_S, event= ILP_AUTO_NEG_DELAY_TIMEOUT_EV
Aug 24 10:35:03.130: ILP disable DTE detection X seconds (Gi3/0/20)
Aug 24 10:35:08.131: ILP uses DC Disconnect(Gi3/0/20): state= ILP_DETECTING_S, event= DISABLE_DTE_TIMER_EV
Aug 24 10:35:09.211: ILP uses DC Disconnect(Gi3/0/20): state= ILP_DETECTING_S, event= ILP_IEEE_DET_SHORT_EV
**Aug 24 10:35:14.552: ILP uses DC Disconnect(Gi3/0/5): state= ILP_LINK_UP_S, event= PHY_LINK_UP_EV
Aug 24 10:35:16.544: %LINK-3-UPDOWN: Interface GigabitEthernet3/0/5, changed state to up
Aug 24 10:35:17.548: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet3/0/5, changed state to up**
Aug 24 10:35:24.213: ILP uses DC Disconnect(Gi3/0/20): state= ILP_DETECTING_S, event= ILP_AUTO_NEG_DELAY_TIMEOUT_EV
Aug 24 10:35:24.213: ILP disable DTE detection X seconds (Gi3/0/20)
CABB_SW#
Aug 24 10:35:29.215: ILP uses DC Disconnect(Gi3/0/20): state= ILP_DETECTING_S, event= DISABLE_DTE_TIMER_EV
Aug 24 10:35:30.452: ILP uses DC Disconnect(Gi3/0/20): state= ILP_DETECTING_S, event= ILP_IEEE_DET_SHORT_EVno debu all
All possible debugging has been turned off
CABB_SW#
有人知道为什么在 3850s 而不是 2960s 上可以吗？日志向我表明，在 PoE 丢失之前，还有其他原因导致断开连接。
下面的额外信息：
CABB_SW#show power inline
Module Available Used Remaining
(Watts) (Watts) (Watts)
------ --------- -------- ---------
1 370.0 152.2 217.8
2 370.0 132.4 237.6
3 370.0 68.4 301.6
Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- ------------------- ----- ----
Gi1/0/1 auto off 0.0 n/a n/a 30.0
Gi1/0/2 auto on 4.0 Ieee PD 1 30.0
Gi1/0/3 auto on 15.4 Ieee PD 3 30.0
Gi1/0/4 auto on 7.0 Ieee PD 2 30.0
Gi1/0/5 auto on 4.0 Ieee PD 1 30.0
Gi1/0/6 auto on 7.0 Ieee PD 2 30.0
Gi1/0/7 auto on 4.0 Ieee PD 1 30.0
Gi1/0/8 auto on 4.0 Ieee PD 1 30.0
Gi1/0/9 auto on 7.0 Ieee PD 2 30.0
Gi1/0/10 auto off 0.0 n/a n/a 30.0
Gi1/0/11 auto on 7.0 Ieee PD 2 30.0
Gi1/0/12 auto on 4.0 Ieee PD 1 30.0
Gi1/0/13 auto on 4.0 Ieee PD 1 30.0
Gi1/0/14 auto on 7.0 Ieee PD 2 30.0
Gi1/0/15 auto on 7.0 Ieee PD 2 30.0
Gi1/0/16 auto on 7.0 Ieee PD 2 30.0
Gi1/0/17 auto on 7.0 Ieee PD 2 30.0
Gi1/0/18 auto on 4.0 Ieee PD 1 30.0
Gi1/0/19 auto on 4.0 Ieee PD 1 30.0
Gi1/0/20 auto on 15.4 Ieee PD 3 30.0
Gi1/0/21 auto on 15.4 Ieee PD 3 30.0
Gi1/0/22 auto on 7.0 Ieee PD 2 30.0
Gi1/0/23 auto on 4.0 Ieee PD 1 30.0
Gi1/0/24 auto on 7.0 Ieee PD 2 30.0
Gi2/0/1 auto on 7.0 Ieee PD 2 30.0
Gi2/0/2 auto on 15.4 Ieee PD 3 30.0
Gi2/0/3 auto on 15.4 Ieee PD 3 30.0
Gi2/0/4 auto on 15.4 Ieee PD 3 30.0
Gi2/0/5 auto on 7.0 Ieee PD 2 30.0
Gi2/0/6 auto on 4.0 Ieee PD 1 30.0
Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- ------------------- ----- ----
Gi2/0/7 auto on 4.0 Ieee PD 1 30.0
Gi2/0/8 auto on 4.0 Ieee PD 1 30.0
Gi2/0/9 auto on 7.0 Ieee PD 2 30.0
Gi2/0/10 auto on 15.4 Ieee PD 3 30.0
Gi2/0/11 auto off 0.0 n/a n/a 30.0
Gi2/0/12 auto on 7.0 Ieee PD 2 30.0
Gi2/0/13 auto off 0.0 n/a n/a 30.0
Gi2/0/14 auto off 0.0 n/a n/a 30.0
Gi2/0/15 auto off 0.0 n/a n/a 30.0
Gi2/0/16 auto off 0.0 n/a n/a 30.0
Gi2/0/17 auto off 0.0 n/a n/a 30.0
Gi2/0/18 auto off 0.0 n/a n/a 30.0
Gi2/0/19 auto off 0.0 n/a n/a 30.0
Gi2/0/20 auto off 0.0 n/a n/a 30.0
Gi2/0/21 auto on 15.4 Ieee PD 0 30.0
Gi2/0/22 auto off 0.0 n/a n/a 30.0
Gi2/0/23 auto off 0.0 n/a n/a 30.0
Gi2/0/24 auto on 15.4 Ieee PD 0 30.0
Gi3/0/1 auto off 0.0 n/a n/a 30.0
Gi3/0/2 auto off 0.0 n/a n/a 30.0
Gi3/0/3 auto off 0.0 n/a n/a 30.0
Gi3/0/4 auto off 0.0 n/a n/a 30.0
**Gi3/0/5 auto on 15.4 Ieee PD 0 30.0**
Gi3/0/6 auto off 0.0 n/a n/a 30.0
Gi3/0/7 auto off 0.0 n/a n/a 30.0
Gi3/0/8 auto off 0.0 n/a n/a 30.0
Gi3/0/9 auto off 0.0 n/a n/a 30.0
Gi3/0/10 auto off 0.0 n/a n/a 30.0
Gi3/0/11 auto off 0.0 n/a n/a 30.0
Gi3/0/12 auto off 0.0 n/a n/a 30.0
Gi3/0/13 auto on 7.0 Ieee PD 2 30.0
Gi3/0/14 auto on 7.0 Ieee PD 2 30.0
Gi3/0/15 auto on 7.0 Ieee PD 2 30.0
Gi3/0/16 auto on 7.0 Ieee PD 2 30.0
Gi3/0/17 auto on 7.0 Ieee PD 2 30.0
Gi3/0/18 auto on 7.0 Ieee PD 2 30.0
Gi3/0/19 auto on 7.0 Ieee PD 2 30.0
Gi3/0/20 auto off 0.0 n/a n/a 30.0
Gi3/0/21 auto off 0.0 n/a n/a 30.0
Gi3/0/22 auto off 0.0 n/a n/a 30.0
Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- ------------------- ----- ----
Gi3/0/23 auto off 0.0 n/a n/a 30.0
Gi3/0/24 auto on 4.0 Ieee PD 1 30.0