CISCO 3850 PoE+ SWITCH

Hi,
I have a device which is a PoE device (IEEE802.3af). Can Cisco 3850 PoE+ (IEEE802.3at) support both data and power to Normal PoE (IEEE802.3af) devices.
Please confirm.
Thanks
Amey

Hi,
See this:
3850 PoE, PoE+, and Cisco UPOE Ports
The PoE+ and Cisco Universal Power Over Ethernet (Cisco UPOE) ports use the same connectors as described in the "10/100/1000 Ethernet Ports" section.
They provide:
•PoE+ ports: Support for IEEE 802.3af-compliant powered devices (up to 15.4 W PoE per port) and support for IEEE 802.3at-compliant powered devices (up to 30 W PoE+ per port). The maximum total PoE power in a 1RU switch is 1800 W.
•Cisco UPOE ports: Support for powered devices on all four Ethernet signal pairs (up to 60 W Cisco UPOE per port).
•Support for Cisco-enhanced PoE.
http://www.cisco.com/en/US/docs/switches/lan/catalyst3850/hardware/installation/guide/HIGOVERV.html#wp1351798
Regards,

Similar Messages

CISCO 3850 PoE+ SWITCHES

Hi,
I have a device which work on PoE (IEEE802.3af).
Is it possible to sent the data + power to the PoE device by use of Cisco PoE+ (IEEE802.3at) i.e Could PoE+ Switches (IEEE802.3at) support the PoE Devices (IEEE802.3af).
Please help.
Thanks
Amey

See this:
3850 PoE, PoE+, and Cisco UPOE Ports
The PoE+ and Cisco Universal Power Over Ethernet (Cisco UPOE) ports use the same connectors as described in the "10/100/1000 Ethernet Ports" section.
They provide:
•PoE+ ports: Support for IEEE 802.3af-compliant powered devices (up to 15.4 W PoE per port) and support for IEEE 802.3at-compliant powered devices (up to 30 W PoE+ per port). The maximum total PoE power in a 1RU switch is 1800 W.
•Cisco UPOE ports: Support for powered devices on all four Ethernet signal pairs (up to 60 W Cisco UPOE per port).
•Support for Cisco-enhanced PoE.
http://www.cisco.com/en/US/docs/switches/lan/catalyst3850/hardware/installation/guide/HIGOVERV.html#wp1351798

Cisco 3850 24T Switch Stack Config

Dear Friends,
I have 2nos Cisco 2850 Switches,
I am new to stack config, I know by default stack will be enabled but I want to change the priority..
So Please help me stack config step by step....
Thanks & Regards,
Srinivas. N

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3850/software/release/3se/ha_stack_manager/configuration_guide/b_hastck_3se_3850_cg/b_hastck_3se_3850_cg_chapter_010.html

Monitoring Power output on a POE switch

We just installed 12 AP's on a Cisco 3560 POE switch which currently has 6 AP's already connected to it.
The Customer is asking us to montior the power consumption on the switch.
What are the recommended methods for accomplishing this?
Thanks You for any input!

Kevin,
Have a look at this link:-
http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750/software/troubleshooting/g_power_over_ethernet.html#wp1002308
Sample outputs of what to look for
Regards,
Alex.
Please rate useful posts.

Cisco 3850 Switch and Windows 7 IP Conflicts

Team,
Last evening (Christmas eve) we setup a pair of Cisco 3850 with IP Base version 3.3.35SE (recommended) and 3.7.0E (very latest).
We got these to replace a very old switch that had died. Attached to this network are windows 7 PC's with all the standard patches, service packs, etc.
with standard port configs - no PC would work - and in fact on each screen we got the windows 7 IP Conflict pop up box.
This seemed very odd to us, as we know these IP's are all static (no dhcp on this segment at all)
we went with a very vanilla config on each port
interface g1/0/1
switchport host
that is it - nothing special at all.
well, after hours of research we found the 3850 has a problem where its "ip device tracking" (even though disabled, by way of NOT being enabled on any interface) will effect the windows 7 PC's ip address in use detection port start up phase!
This is a very big problem. I am frankly SHOCKED Cisco would release a major switch that is going to not work when connected to the average network with windows 7 PC's.
we tried 3+ hours of prescribed work-arounds found when researching this issue -
ip device tracking probe delay 10 (global config)
ip device tracking max 0 (disabed, on interface)
finally,
nmsp attach suppress (interface, however this appears to be a default command in all IOS-XE versions we tried, as the command did NOT show in the show run) . this effected many different nic card vendors (laptops, desktops) and nic card drivers levels from old to very recent.
Finally,
we compared a 3850 in another location to this one - and we never got HIT by this problem before because that 3850 only as TRUNK ports and no windows 7 hosts directly attached.
Doing more research, I found out this also can effect vmware guests running windows SERVER.
this is now a huge issue as we have a scheduled deployment of 3850's throughout our network which is going to be put on hold.
the work-around I came up with which is not great is -
Make ALL the "access" ports connected to PC TRUNK ports and leave the NATIVE vlan (untagged) as the vlan you want the PC's to be in
interface g1/0/1
switchport mode trunk
switchport trunk native vlan 1
this is NOT an acceptable workaround as this presents security issues even with
switchport trunk allowed vlan 1, etc. as the only allowed vlan.
Note: this issue manifested itself and windows 7 PC's were UNABLE to use the network. if you do "ipconfig /all | more" you would see
192.168.0.140(duplicate) and the interface would actually use 169.254.0.239(duplicate) so the duplicate message appeared twice in the output.
1) With and without an SVI interface on each 3850 for the vlan where the windows 7 machines had a duplicate
2) when we had an SVI and the command ip device tracking probe use-svi (or whatever the hidden command is I forget now, but it took it)
3) when we had aaa new-model configured - and not configured - thinking this was some artifact of having aaa turn on something like 802.1x port state
4) when could confirm NO DHCP SNOOPING
5) when we DID not use static IP's - and had the switch assign DHCP addresses - the Windows 7 PC's STILL had duplicates and didnt work for their "Just leased" ip's.
6) when we could confirm ios-xe ip device tracking = disabled with show ip device tracking status, etc.
This is a major problem for this 3850 and unless we get a definitive answer on why this is happening and how we can rectify we are going to have to return our 3850's and get HP Procurve's something I would rather avoid doing. There is NO REASON I can imagine other than older switches who's ports default to ROUTED ports (i.e.. no ip switchport) where a switch should not at least function as a bare switch with essentially a default configuration out of the box.
Any ideas? I'm working well now with the ports ALL in trunking mode with vlan 1 native, but this is not a scalable workaround we can live with as we have security risks of a port not blocking certain vlans from going out ports to pc's, etc. that attackers could send tags on at that point, etc.
thanks,
Joe Brunner
#19366

thanks for replying - i'm not onsite (its a standalone network) - but here is what it is -
Answers in line -
This all stems from a switch replacement correct?
yes a 10 year old Allied Telesyn switch was replaced that had no config - like a hub, just used for connectivity.
Are these 3850's in a stack?
>yes, tested all aspects of the stack many times.
Does it have a managment ip address -If so, is it using the old switch ip address
>old switch had no ip - i made a "management interface" on vlan 1 - BUT no ip on the built-in management interface on the switch.
What are they connecting to? (a router/L3 switch/anohter switch- cisco-HP etc..)
>various other devices - only 1 link back to a single 3750x stack. that switch is "hardened" so to speak to reveal or propagate very little by design.
How are they connected( L3 interface/L2 trunk/access port)
>all ports are left in trunk mode with vlan 1 as the active and untagged port. this was the workaround done to ever get the switch going. in "out of the box" or default mode as we initially wanted (no config) links to windows 7 PC's didnt work. links to linux or other devices non-windows did work!
Are thse switches performing inter-vlan routing or just acting as host switches?
>dumb flat network, no routing.
Is ip routing enabled?
>not unless enabled on 3850 by default. I didnt type "ip routing"
Do you have multiple vlans in your network and if so ar ethe being propergated to these new switches?
Your 7 pcs = are they just client pcs not servers?
client PC's - no servers OS per say.
can you confirm something like ICS isnt enabled (Internet connection sharing) on any of them?
>yes not enabled.
Are the just using one NIC each?
> one machine is dual homed - but we know where its "second nic" goes - to another cisco network which is NOT connected back to this one. we traced all our ports a few times thinking even perhaps some small hub was "reflecting" traffic back to us - like a blackbox. Strangest thing -
default config out of the box - with ALL ports SHUTDOWN EXCEPT the single windows 7 facing port - the windows 7 machine STILL registered an IP CONFLICT when connected to the 3850 - even when it had NO SVI's!!! (i know mind numbing). if you disconnected the pc and connected it to an old cisco switch - it worked fine!!! wow.
sh switch
2 identical 3850's in working stack. power and network stacked. both at same version, etc - upgraded each time with "software install file flash:<long ios name>.bin
tested all power and general 3850 stacking. saw no issues.
sh int trunk
>all ports are now trunks (hence the workaround used to get it up).
has 20 trunks to PC's and some single connected switches (far away on fiber) - all allow only vlan 1 - no other vlans were created - very very simple network. vlan 1 is native
sh vlan brief
>just vlan 1 - no vlans created, checked this many times - had vlan 100 at one point - made sure it was gone over a period of hours.
sh vtp status
not setup - left complete default; no vtp domain set - connected to all switches in transparent model if a switch connection exists.
sh cdp neighbours
cant post (for god and country LOL) but there is one link back to our "core" so to speak - that switch is hardened not to allow any settings to slip over to new switches so hence no vtp, cdp is one to help troubleshooting.
sh ip route
just the L and C routes for the vlan 1 ip address 192.168.17.1/24
no static routes
no vlan interfaces other than int vlan 1
no ip address on g0/0/0 -> the default 3850 management interface hard assigned to the 3850 VRF you cant remove.
int g0/0/0
ip vrf forwarding Switch_Mgmt
i can get over there if you think of anything else key to show the group.
thanks,
Joe

How can i configure hsrp in cisco 3850 switch please guide me

how can i configure hsrp in cisco 3850 switch please guide me

Hi Mauleshg,
Please the below mention link to configure Hsrp hope this will help you.
http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3850/software/release/3se/ip/configuration_guide/b_fhrp_3se_3850_cg/b_fhrp_3se_3850_cg_chapter_010.html
Br.
Mohseen Patel

Emergency Responder and Cisco 3850 Switches

I'm running Cisco ER V8.5, and recently installed new Cisco 3850 Switches. All the phones connected to the 3850 switches show a "unlocated" status. I've check the hardware compatibility Matrix for ER V8.5 and the 3850 is not on it.
What are my options for locating these phones in ER and assigning them to an ERL. Manually defining the phones? Is there a patch or update to ER V8.5 that would make a 3850 compatible?

I haven't used the 3850's with ER yet so can't speak to that specifically, but generally speaking you have more flexibility using location by subnets vs switches. Scalability-wise, you can add way more subnets than switches. There's more going on under the hood if you're locating by switches so the process overhead is greater.
The only downside with using subnets is if you need to get more granular with your locations than your deployed subnets allow (ie a single voice subnet for an entire building but you need to define and assign locations at the floor level). As long as you've been a little forward thinking on the route/switch side, you'll be fine.
hope that helps,
will

Cisco 3850 Switch getting message %SPI_FC-3-HIGH_WMARK_REACHED

Hi Team,
We have one Cisco 3850 Switch installed at the Customer site and getting the message as below,
Mar 28 10:57:11.578: %SPI_FC-3-HIGH_WMARK_REACHED: Number of messages in the queue for channel 9 has reached maximum.
-Traceback= 1#830db5fd318976b0280defe233875463 :10000000+153F71C :10000000+B5E9B0 :10000000+B5EBA4 :10000000+3CC5CC :10000000+3CD0B4 :10000000+39AB00 :10000000+27CDD2C :10000000+7C7814 :10000000+27AC29C
.Mar 28 10:58:31.585: %SPI_FC-3-HIGH_WMARK_REACHED: Number of messages in the queue for channel 9 has reached maximum.
-Traceback= 1#830db5fd318976b0280defe233875463 :10000000+153F71C :10000000+B5E9B0 :10000000+B5EBA4 :10000000+3CC5CC :10000000+3CD0B4 :10000000+39AB00 :10000000+27CDD2C :10000000+7C7814 :10000000+27AC29C
--More-- .Mar 28 10:59:51.586: %SPI_FC-3-HIGH_WMARK_REACHED: Number of messages in the queue for channel 9 has reached maximum.
-Traceback= 1#830db5fd318976b0280defe233875463 :10000000+153F71C :10000000+B5E9B0 :10000000+B5EBA4 :10000000+3CC5CC :10000000+3CD0B4 :10000000+39AB00 :10000000+27CDD2C :10000000+7C7814 :10000000+27AC29C
Please suggest the meaning of these messages and suggestion for resolution on the same.
Attaching show version, show logging for this Switch.
Regards
Ashutosh

Hi Akilhasan,
The switch is hitting a bug which is currently under investigation. The latter implies there is no official workaround, but my suggestion would be that you consider reloading the switch outside of business hours (considering preventive measures i. e. back the configuration up, save changes, etc.).
The most stable version and recommended per Cisco is 03.03.03. There is newer 03.06.00 available, just released past June, so you may consider as well upgrading the IOS, of course under a properly carried out risk assessment, and you can roll back if something unexpected occurs. I would suggest doing so only if you have a solid knowledge of the customer's network and business needs.
Hope this helps.
Kind regards,
- Ed

Cisco 2960S FPS-L PoE switch with Avaya 9811g VOIP setup

Hello,
I am connecting a setup for data/voice connecting Catalyst 2960S-FPS-L PoE switch with Avaya 9811g series VOIP phone. As per my knowledge cisco switch works well with Cisco phone as it has got some builtin "Macros" and Intelligent PoE recognition when we connect device getting the details of another device through CDP. I understand I have to create data and voice vlan with QOS then enable trunking on the interface to other switch that is also 2960. Little confuse if is there any compatibility issues with Switch and Avaya phone regarding protocol/data/voice...?
Do I have to do PoE config for each port on the each interface?
any help or detail config will help.
Thanks in advance.

Hi I am back after good research. created two vlan data and voice with trunk on interface1/0/48 given below config..
connection b/w 2960s FPS Switch and Avaya 9611g IP Phone.
lldp/cdp is enable on switch
So I created this config if some one can take a look .
expert advise if something wrong?..
I am only concern with Voice and PoE as voice is my priority. do i have to map something for voice quality?
also if i create another Trunk port one allow voice other allow data both cable will go to switch will that be issue?
interface....
switchport access vlan x
switchport mode access
switchport nonegotiate
switchport voice vlan xx
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
mls qos trust cos
auto qos voip trust
spanning-tree portfast
interface ........
switchport trunk allowed vlan x,x
switchport mode trunk
switchport nonegotiate
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
mls qos trust cos
auto qos voip trust

Best way to connect 2 Cisco 3750 PoE 24-port Switches

Hello. I have 2 Cisco 3750 PoE 24-port switches in a small office environment. Right now I have a trunk configured off my ASA 5505 to switch 1, and then just an access port configured on a port (switch 1) and an access port configured on a port (switch 2) to connect them together. These switches also have 2 GB SFP ports but they are not being used in this configuration.
I was curious to know if anyone had any better recommend configurations for connecting these 2 switches together? I'm not sure if this particular model can be stacked?

What are the exact model numbers (should be written on a sticker)?
You will know if they can be stacked as you will see the 2x stack ports on the back of each switch :)
If they can then that is probably the way to go unless you want to keep them as separate switches for some reason.
If you want them separate, I would connect them via a Trunk link at least so you can have the same Vlans on both.
Thanks

Cisco PoE switch for WAP321

Could someone please point me to a Cisco small business switch that would be capable of powering five WAP321's?
I don't know the power profile on these APs but have noticed that the PoE injectors pump out 16.8 MAX watts. I can't find anywhere what the power profile is on WAP321 APs but ~17 WATTS seems to me to be quite high.
In fact, I was interested in the SF100D-16P which has a power budget of 64W over 8 ports... the price range is in my budget.
Could anybody tell my if the SF100D-16P can power 5-6 WAP321's sufficiently? Thank you.

The WAP support 802.3 AF. Although I don't know specific detail for the power profile I can assure it should not exceed 15.4 WATT. Typically the small business power draw is less than 8 watt per port. Devices which support CDP will also have a min/max draw that optimizes the POE functions.
However, the datasheet and admin guide does not make mention of any CDP
http://www.cisco.com/en/US/prod/collateral/wireless/ps5678/ps12237/ps12249/c78-697406_data_sheet.html
http://www.cisco.com/en/US/docs/wireless/access_point/csbap/wap121/quick_start/guide/WAP_121_321_QSG_en.pdf

Cisco 3750x 24 port poe switch single port is faulty.

what i can do if my cisco 3750x 24 port poe switch single port is faulty ????

Duplicate posts.
Go here: http://supportforums.cisco.com/discussion/12187366/cisco-3750x-24-port-poe-switch-failure

Cisco 3750x 24 port poe switch failure

what is the chance of cisco 3750x 24 port poe switch failure? is backup necessary for this ? please answer me in details.

If you have a Cisco switch with, at least, one faulty port you RMA the appliance.
There is nothing more detailed than that.

Using Cisco 7961 Phones with Linksys SRW208P POE Switch

I am having a problem getting our Cisco 7961 phones to work with a Linksys SRW208P POE switch. The internet works great , but when I connect a 7961 Cisco phone it hangs at the " configuring IP " screen. Are these model phones compatible with this switch? Any Ideas. Thank You!

I'm having a similar problem with the Cisco 7941G phones using a Linksys SLM224G4PS (with PoE). Did you ever get them to work?
The 7941Gs work with the plain Linksys SR224 and using power injectors, but not with the smart switch. It has nothing to do with the PoE, I've used the power injectors with the SLM224G4PS. It wasn't a current overload problem.
I've gotten the phones to work for somewhere between 10-40 seconds, which has given me enough time to find the IP address (DHCP) then pull up the web interface of the Cisco 7941G.
The phone on the SR244 had GARP enabled and Voice VLAN enabled and the operation, the phone on the SLM224G4PS had both disabled.
The working phone on the SR244 had a operational VLAN ID of 31, the non working phone on the SLM224G4PS didn't have any indicated.
I'm guessing that the root of the problem is the Voice VLAN, but tech support tells me that out of the box the switch should pass everything.
Apparently not so much...

Cisco prime 2.1 not showing wired clients connected to Cisco 3850 switches

Hello All,
I have around 80 Cisco 3850 switches at a customer network and they are using prime infrastructure 2.1.2 to manage these devices. Most of the features are working fine except that the prime does not show the wired clients connected to the switches. The wireless clients are shown properly but not the wired clients. Their core switches are nexus 7k. The SNMP configuration on the switches is as follows.
snmp-server group xxxx v3 priv write xxxx-VIEW-WR
snmp-server view xxx-VIEW-WR mib-2 included
snmp-server trap-source Vlan100
snmp-server host x.x.x.x version 3 priv testuser
Please help me to resolve this issue.
Shabeeb

I managed to get the end hosts connected in 3850 switches with the use of snmp context command. But now the issue is that prime is showing only the mac address of the device , not the IP address.
Is there anyway to resolve this issue?

CISCO 3850 PoE+ SWITCH

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