Cisco (C9105AXW B) Cisco Catalyst 9105AX Series Wallplate
Understand Aironet and Catalyst Access Point Power Requirements (Quick Reference) Contents Introduction PoE Standards Power Cisco Access Points Compatible Power Injectors and DC Power Supplies Compatible PoE Standards Troubleshoot Verify Switch Power Budget Verify Power Negotiation Common Issues Cisco TAC Encounters Introduction This document describes different Power over Ethernet standards, lists power requirements, and compatible power supplies for Cisco APs. PoE Standards Power over Ethernet (PoE) refers to the system where electrical power is transferred along with data via twisted pair Ethernet cabling. The convenience of PoE allows Cisco APs to use a single cable to provide both power and data, which makes deployments much more cost-effective. As of 2020, there are four Powers over Ethernet standards utilized by Cisco access points. This table lists them along with their characteristics: Codename Maximum Power [W] IEEE Standard PoE 15.4 802.3af PoE+ 30 802.3at UPoE 60 Cisco proprietary UPoE+ 90 802.3bt Table 1. PoE Standards Power Cisco Access Points There is no power difference between different regulatory domains of the same AP model. For example, Cisco 4800I-E and 4800I-S have identical power draw and power requirements. Compatible Power Injectors and DC Power Supplies Table 2. lists all officially supported PoE injectors for the latest Cisco AP models: AP Model PoE Injectors AC/DC Power Adapter 9124 AIR-PWRINJ-60RGD1= (full power), AIR-PWRINJ-60RGD2= (full power), AIR-PWRINJ6= (medium power) Auxiliary DC input, 24V to 56V support 60W, model not specified in data sheet 9166 AIR-PWRINJ7= (full power), AIR-PWRINJ6= (medium power),MA-INJ-6 (full power) MA-PWR-50WAC (full power) 9164 AIR-PWRINJ7= (full power), AIR-PWRINJ6= (medium power),MA-INJ-6 (full power) MA-PWR-50WAC (full power) 9162 AIR-PWRINJ7= (full power), AIR-PWRINJ6= (full power), MA-INJ-6 (full power) MA-PWR-30W (full power) 9136 AIR-PWRINJ7= (full power) X 9130 AIR-PWRINJ6= (full power), AIR-PWRINJ5= (medium X power) 9124 AIR-PWRINJ6= (medium power), AIR-PWRINJ-60RGD1= (full power), AIR-PWRINJ- X 60RGD2= (full power) 9120 AIR-PWRINJ6= (full power), AIR-PWRINJ5= (medium X power) 9117 AIR-PWRINJ6= (full power), AIR-PWRINJ5= (medium X 9115 9105 4800 3800 2800 3700 2700 1700 1850 1840 1830 1815i and 1815m power) AIR-PWRINJ6= (full power), AIR-PWRINJ5= (medium X power) AIR-PWRINJ6= (full power), AIR-PWRINJ5= (medium X power) AIR-PWRINJ6= (full power) AIR-PWR-50= (full power) AIR-PWRINJ6= (full power) AIR-PWR-50= (full power) AIR-PWRINJ6= (full power) X AIR-PWRINJ6= (full power), AIR-PWRINJ4= (medium power) AIR-PWR-B= (full power) AIR-PWRINJ6= (full power), AIR-PWR-C= (full power), AIRAIR-PWRINJ4= (full power) PWR-D= (full power) AIR-PWRINJ5= (full power) AIR-PWR-C= (full power), AIRPWR-D= (full power) AIR-PWRINJ4= (full power), AIR-PWRINJ5= (medium power) AIR-PWR-C= (full power) AIR-PWRINJ6= (full power), AIR-PWRINJ5= (medium X power) AIR-PWRINJ6= (full power), AIR-PWRINJ5= (medium power) AIR-PWR-C= (full power) AIR-PWRINJ6= (full power), AIR-PWRINJ5= (full power) X 1815t X AIR-PWR-D= (full power) 1815w AIR-PWRINJ6= (full power), AIR-PWRINJ5= (full power) X 1810 AIR-PWRINJ6= (full power), AIR-PWRINJ5= (full power) AIR-PWR-D= (full power) 1572 AIR-PWRINJ1500-2= (full power) 1562I AIR-PWRINJ-60RGD1= (full power),AIR-PWRINJ-60RGD2= AIR-PWRADPT-RGD1= (full (full power), AIR-PWRINJ6= power) (medium power) 1562E and 1562D AIR-PWRINJ-60RGD1 = (full power), AIR-PWRINJ60RGD2 = (full power), AIRPWRINJ6 = (full power) AIR-PWRADPT-RGD1 = (full power) 1542 AIR-PWRINJ-60RGD1 = (full power), AIR-PWRINJ60RGD2 = (full power), AIR- X PWRINJ6 = (full power), AIRPWRINJ5 = (full power) IW6300 AIR-PWRINJ6 = (full power) IW-6300H-AC-X-K9 (full power), IW-6300H-DC-Xâ"K9 (full power), IW-6300H-DCW-XK9 (full power) IW3700 AIR-PWRINJ1500-2 = (full power), AIR-PWRINJ60RGD1 = (full power), AIRPWRINJ-60RGD2 = (full power) AIR-PWRADPT3700NA = (full power), AIRPWRADPT3700IN = (full power) Table 2. Power Injectors and DC Power Adapters Compatible PoE Standards Table 3. contains information about what features are available when APs are powered with the use of different PoE standards. As of this article last update, all APs have full functionality with UPoE+ standard (802.3bt), so it is not included in the table. This table assumes that no PoE passthrough (PoE Out) is used. Note: Unless APs are provided the full power they require, they show up with a Low/Medium Power in Wireless Controller Web interface. AP Model Max Power Draw If powered with If powered with If powered with [W] UPOE PoE+ PoE 9124 TBD (Not published in the datasheet) Full functionality 2.4GHz & 5GHz radios at 2x2, 6GHz radio shut down, Multigigabit port speed 1000mbps, SFP port disabled, PoE out disabled, Downlink ethernet interface enabled Multigigabit port speed 1000mbps, all radios are shut down, SFP port disabled, PoE out disabled, Downlink GigabitEthernet interface disabled 9166 30.5 Full functionality USB port disabled Multigigabit port speed 1000mbps, all radios are shut down, USB port disabled 9164 30 Full functionality USB port disabled Multigigabit port speed 1000mbps, all radios are shut down, USB port disabled 9162 25.5 Full functionality Full functionality 2.4 GHz radio disabled 5GHz & 6GHz radios at 1x1, Multigigabit port speed 1000mbps, USB port disabled 9136 47.3 Full functionality 2.4GHz radio at 2x2, 5GHz radio at 4x4, 6GHz radio at 2x2, Multigigabit port speed 2.5gbps, second multigigabit port disabled, USB Multigigabit port speed 1000mbps, all radios are shut down, USB port disabled port disabled 9130 30.5 Full functionality Before 17.10: USB USB port disabled, 9124 9120 9117 9115 9105 4800 3800 port disabled, 17.10 ethernet port speed and later: full 1000mbps, both functionality radios at 1x1 TBD (Not published in the datasheet) Full functionality Multigigabit port Multigigabit port speed 1000mbps, speed 1000mbps, both radios at 2x2, both radios SFP port disabled, disabled, SFP port PoE out disabled disabled, PoE (AUX port still out/AUX port operational for data) disabled USB port disabled, ethernet port speed 1000mbps, with 25.5 Full functionality Full functionality both radios at 1x1 or one of the radios on 2x2 with another one disabled If the USB port is USB port disabled, 28.9 Full functionality enabled, the 5GHz ethernet port speed radio is reduced to 2500mbps, both 4x4 radios at 2x2 USB port disabled, 21.4 Full functionality Full functionality ethernet port speed 1000mbps, both radios at 2x2 TBD (Not published in the datasheet) Full functionality Full functionality USB port disabled, PoE out disabled USB port disabled, primary ethernet 31 Full functionality port speed AP does not power 1000mbps, second on AUX ethernet port disabled Both radios are shut 30 Full functionality Full functionality down, but AP powers up and is able to join WLC 2800 26.5 3700 19.6 2700 15 1700 15 1850 20.9 1840 17.8 1830 15.4 1815i & 1815w 8.5 1815m 13.9 1810 15.4 1572 31 1562i 32 1562e & 1562d 25 Full functionality Full functionality Both radios are shut down, but AP powers up and is able to join WLC Full functionality Full functionality Both radios at 3x3 without Wireless Security Module (WSM) or both radios at 2x2 with WSM Full functionality Full functionality Both radios at 3x3 Full functionality Full functionality Full functionality Full functionality Full functionality USB port disabled, AUX ethernet port disabled, 2.4 GHz radio at 2x3 Full functionality Full functionality USB port disabled Full functionality Full functionality USB port disabled Full functionality Full functionality Full functionality Full functionality Full functionality Full functionality Full functionality Full functionality Full functionality No PoE out AP does not power AP does not power up up Full functionality Both radios at 2x2 Both radios are shut down, but AP powers up and is able to join WLC Full functionality Full functionality Both radios are shut down, but AP powers up and is able to join WLC 1542 13.9 Full functionality Full functionality Full functionality IW6300 28 No PoE out No PoE out AP does not power up IW3700 30 1 heater active, no PoE out 1 heater active, no PoE out No heaters are active, and both radios are at 2x2 Table 3. Compatible PoE Standards Note: For additional information about each AP model refer to their data sheets and the installation guides. Troubleshoot Verify Switch Power Budget These switch commands display the current switch, port, power allocation, and budget: <#root> Switch# show power inline Module Available Used Remaining (Watts) (Watts) (Watts) ------ --------- -------- --------- 1 472.0 344.5 127.5 Interface Admin Oper Power Device Class Max (Watts) --------- ------ ---------- ------- ------------------- ----- ---- Gi1/0/1 auto on 25.5 C9120AXI-A 4 30.0 Gi1/0/2 auto on 25.5 C9120AXI-A 4 30.0 Gi1/0/3 auto on 25.5 C9120AXI-A 4 30.0 Gi1/0/4 auto on 25.5 C9120AXI-A 4 30.0 ... Verify Power Negotiation The default interface configuration works well in most deployments provided there is enough power budget, and the switch supports the minimum PoE standard requirement for a given AP model. Particular caution has to be paid when you deal with power requirements greater than PoE (802.3af), as either CDP or LLDP needs to remain enabled (both globally and on the port level) to ensure proper power negotiation with the connected AP. Ensure these options are not disabled (these commands are not visible in a normal running configuration as they are there by default): <#root> Switch(config)# cdp advertise-v2 Switch(config)#interface GigabitEthernet1/0/1 Switch(config-if)# cdp enable To verify if CDP is enabled you can use this command: <#root> Switch# show cdp Global CDP information: Sending CDP packets every 60 seconds Sending a holdtime value of 180 seconds Sending CDPv2 advertisements is enabled Common Issues Cisco TAC Encounters · Power an Access Point with PoE standard that does not provide enough power that it requires and results in AP showing up in the WLC web interface with a Low/Medium Power . In some cases, this results in a non-functional AP that cannot even turn on its radios (for example, when 3800 AP is powered with the use of 802.3af), or it can result in reduced performance (for example, when 9115 AP is powered with the use of 802.11af and radios fall back to 2x2). Please take a look at Table 3. for the exact behavior of each AP model. · Not all APs from the same series have the same power draw. For example, the 1562i can draw up to seven watts more than the 1562d version. · Connecting AP to the power source with the use of a very long or non-certified cable can result in a higher power draw at the power source. · When you use external or industrial APs, it is crucial to ground them. Refer to the 'AP deployment guides' for further information on the results of not properly grounding the AP. · When you use power injectors, it is impossible to have mGig port speeds higher than 1000 Mbps.iText pdfHTML 4.0.5 (AGPL version) ©2000-2023 iText Group NV