wiki:site:cisco:ccnp:switch:poe
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wiki:site:cisco:ccnp:switch:poe [2014/12/26 18:31] 127.0.0.1 upraveno mimo DokuWiki |
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| - | ====== Power over Ethernet ====== | ||
| - | |||
| - | * 48V DC | ||
| - | * switch detekuje PoE zařízení, | ||
| - | * switch musí neustále hlídat, zda nebylo připojeno PoE zařízení (i když je port down) | ||
| - | * jakmile je připojeno PoE zařízení, | ||
| - | * Cisco switch detekuje oba typy PoE | ||
| - | |||
| - | |||
| - | ===== IEEE 802.3af ===== | ||
| - | * 802.3af - malým napětím detekuje odpor na Rx a Tx párech 25Kohm | ||
| - | * různými hodnotami napětí lze zjistit do jaké třídy napájení zař. patří | ||
| - | * třída 0 - používá se pro zařízení, | ||
| - | * některé Cisco switche podporují až 20 W v třídě 4 per port (enhaced PoE) | ||
| - | * switch poskytuje napájení na RJ-45 pinech 1,2 a 3,6 nebo 4,5 a 7,8 | ||
| - | |||
| - | ^PoE Class^Max.Power at 48V DC^Note^ | ||
| - | | 0 | 15.4 W |Default | ||
| - | | 1 | 4.0 W | ||
| - | | 2 | 7.0 W | ||
| - | | 3 | 15.4 W | | | ||
| - | | 4 | up to 50 W |Optional(802.3at)| | ||
| - | |||
| - | ===== ILP (Cisco Inline Power)===== | ||
| - | |||
| - | * switch vyšle 340 kHz tón do Tx páru, je-li tón přijat na Rx páru (smyčka), jedná se o PoE ILP zařízení | ||
| - | * switch poskytuje napájení 48V DC přes RJ-45 piny 1,2 a 3,6 (" | ||
| - | * switch se zařízením vyjednává minimální potřebný výkon pomocí CDP | ||
| - | |||
| - | >Switch# **debug ilpower controller** | ||
| - | >Switch# **debug cdp packets** | ||
| - | |||
| - | < | ||
| - | Switch# debug ilpower controller | ||
| - | Switch# debug cdp packets | ||
| - | |||
| - | 00:58:46: ILP uses AC Disconnect(Fa1/ | ||
| - | 00:58:46: %ILPOWER-7-DETECT: | ||
| - | 00:58:46: Ilpower PD device 1 class 2 from interface (Fa1/0/47) | ||
| - | 00:58:46: ilpower new power from pd discovery Fa1/0/47, power_status ok | ||
| - | 00:58:46: Ilpower interface (Fa1/0/47) power status change, allocated power 15400 | ||
| - | 00:58:46: ILP Power apply to ( Fa1/0/47 ) Okay | ||
| - | 00:58:46: ILP Start PHY Cisco IP phone detection ( Fa1/0/47 ) Okay | ||
| - | 00:58:46: %ILPOWER-5-POWER_GRANTED: | ||
| - | 00:58:46: ILP uses AC Disconnect(Fa1/ | ||
| - | 00:58:48: ILP State_Machine ( Fa1/0/47 ): State= ILP_PWR_GOOD_USE_IEEE_DISC_S, | ||
| - | 00:58:48: ILP uses AC Disconnect(Fa1/ | ||
| - | 00:58:50: %LINK-3-UPDOWN: | ||
| - | 00:58:50: CDP-AD: Interface FastEthernet1/ | ||
| - | 00:58:50: ilpower_powerman_power_available_tlv: | ||
| - | 00:58:50: req id 0, man id 1, pwr avail 15400, pwr man –1 | ||
| - | 00:58:50: CDP-PA: version 2 packet sent out on FastEthernet1/ | ||
| - | 00:58:51: %LINEPROTO-5-UPDOWN: | ||
| - | 00:58:54: CDP-PA: Packet received from SIP0012435D594D on interface FastEthernet1/ | ||
| - | 00:58:54: **Entry NOT found in cache** | ||
| - | 00:58:54: Interface(Fa1/ | ||
| - | 00:58:54: Interface (Fa1/0/47) efficiency is 100 | ||
| - | 00:58:54: ilpower_powerman_power_available_tlv: | ||
| - | 00:58:54: req id 0, man id 1, pwr avail 6300, pwr man –1 | ||
| - | 00:58:54: CDP-PA: version 2 packet sent out on FastEthernet1/ | ||
| - | </ | ||
| - | |||
| - | ====== Konfigurace PoE ====== | ||
| - | |||
| - | * defaultně jsou porty v režimu " | ||
| - | |||
| - | > | ||
| - | > | ||
| - | |||
| - | * **max** // | ||
| - | |||
| - | >Switch# **show power inline** [//type mod/num//] | ||
| - | |||
| - | < | ||
| - | Switch# show power inline | ||
| - | Module Available Used Remaining | ||
| - | (Watts) (Watts) (Watts) | ||
| - | ------ --------- -------- --------- | ||
| - | 1 370.0 39.0 331.0 | ||
| - | |||
| - | Interface | ||
| - | (Watts) | ||
| - | --------- | ||
| - | Fa1/ | ||
| - | Fa1/ | ||
| - | Fa1/ | ||
| - | Fa1/ | ||
| - | Fa1/ | ||
| - | Fa1/ | ||
| - | Fa1/ | ||
| - | [output omitted] | ||
| - | </ | ||
wiki/site/cisco/ccnp/switch/poe.1419615094.txt.gz · Last modified: 2014/12/26 18:31 by 127.0.0.1
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