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光模块问题

yangzho2
Cisco Employee
Cisco Employee
Ethernet1/33
transceiver is present
type is QSFP-40G-SR-BD
name is CISCO-AVAGO
part number is AFBR-79EBPZ-CS2
revision is 01
serial number is AVM2013U618
nominal bitrate is 20600 MBit/sec per channel
Link length supported for 50/125um OM3 fiber is 100 m
cisco id is 13
cisco extended id number is 220
Ethernet1/4/3
transceiver is present
type is QSFP-40G-SR4
name is CISCO-AVAGO
part number is AFBR-79EQPZ-CS2
revision is 02
serial number is AVP2116S2XJ
nominal bitrate is 10300 MBit/sec per channel
Link length supported for 50/125um OM2 fiber is 30 m
Link length supported for 50/125um OM3 fiber is 100 m
cisco id is 13
cisco extended id number is 16
两个光模块,都是40G,但是一个是10G per channel,一个是20G per channel,这是为什么,channel 如何理解
2 条回复2

YilinChen
Spotlight
Spotlight
40G光模块有些是可以做拆分的,1分4,即40G拆分为独立的4个10GE;也有40G光模块是不充许1分4的,和交换机的光模块接口似乎也有关系,目前接触到的设备,如果要1分4,接口对应的板卡/交换机 需要重启,才能生效;
Ethernet1/33
transceiver is present
type is QSFP-40G-SR-BD
Ethernet1/4/3
transceiver is present
type is QSFP-40G-SR4
LZ显示的2个光模块,型号是不一样的,第二个支持1分4,第一个不支持;

1421430003
Level 1
Level 1
QSFP-40G-SR-BD,个人理解是在现有的两芯多模光纤基础上利用波分技术实现单芯收20G发20G,实现40G
QSFP-40G-SR4,个人理解是需要4芯光纤实现4X10G收,4芯光纤4X10G发共8芯来实现40G,需要单独的ODF,和MPO接口。
第二个模块支持1个40G分4个10G
https://www.cisco.com/c/en/us/products/collateral/switches/nexus-9000-series-switches/white-paper-c11-729908.html
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