09-19-2020 04:18 AM
I'm fairly new to ASR. We got a 4X100GE-SE with 4 CPAK-100G-SR10. a LOW_RX_PWR error comes up on every lane with the following on show pfm location all - running on RSP880-SE with IOSXR 5.3.4
CURRENT TIME: Sep 19 15:27:26 2020
PFM TOTAL: 40 EMERGENCY/ALERT(E/A): 0 CRITICAL(CR): 40 ERROR(ER): 0
-------------------------------------------------------------------------------
Raised Time |S#|Fault Name |Sev|Proc_ID|Dev/Path Name |Handle
--------------------+--+-----------------+---+-------+--------------+----------
Sep 19 14:56:01 2020|2 |LANE_0_LOW_RX_POW|CR |163926 |Central Proces|0x1005002
Sep 19 14:56:01 2020|2 |LANE_1_LOW_RX_POW|CR |163926 |Central Proces|0x1005002
Sep 19 14:56:01 2020|2 |LANE_9_LOW_RX_POW|CR |163926 |Central Proces|0x1005002
Sep 19 14:56:01 2020|2 |LANE_8_LOW_RX_POW|CR |163926 |Central Proces|0x1005002
Sep 19 14:56:01 2020|2 |LANE_7_LOW_RX_POW|CR |163926 |Central Proces|0x1005002
Sep 19 14:56:01 2020|2 |LANE_6_LOW_RX_POW|CR |163926 |Central Proces|0x1005002
Sep 19 14:56:01 2020|2 |LANE_5_LOW_RX_POW|CR |163926 |Central Proces|0x1005002
Sep 19 14:56:01 2020|2 |LANE_4_LOW_RX_POW|CR |163926 |Central Proces|0x1005002
Sep 19 14:56:01 2020|2 |LANE_3_LOW_RX_POW|CR |163926 |Central Proces|0x1005002
Sep 19 14:56:01 2020|2 |LANE_2_LOW_RX_POW|CR |163926 |Central Proces|0x1005002
Sep 19 14:56:06 2020|2 |LANE_1_LOW_RX_POW|CR |163926 |Central Proces|0x1005000
Sep 19 14:56:06 2020|2 |LANE_2_LOW_RX_POW|CR |163926 |Central Proces|0x1005000
Sep 19 14:56:06 2020|2 |LANE_3_LOW_RX_POW|CR |163926 |Central Proces|0x1005000
Sep 19 14:56:06 2020|2 |LANE_4_LOW_RX_POW|CR |163926 |Central Proces|0x1005000
Sep 19 14:56:06 2020|2 |LANE_5_LOW_RX_POW|CR |163926 |Central Proces|0x1005000
Sep 19 14:56:06 2020|2 |LANE_6_LOW_RX_POW|CR |163926 |Central Proces|0x1005000
Sep 19 14:56:06 2020|2 |LANE_7_LOW_RX_POW|CR |163926 |Central Proces|0x1005000
Sep 19 14:56:06 2020|2 |LANE_8_LOW_RX_POW|CR |163926 |Central Proces|0x1005000
Sep 19 14:56:06 2020|2 |LANE_9_LOW_RX_POW|CR |163926 |Central Proces|0x1005000
Sep 19 14:56:06 2020|2 |LANE_0_LOW_RX_POW|CR |163926 |Central Proces|0x1005000
Sep 19 14:56:06 2020|2 |LANE_0_LOW_RX_POW|CR |163926 |Central Proces|0x1005001
Sep 19 14:56:06 2020|2 |LANE_9_LOW_RX_POW|CR |163926 |Central Proces|0x1005001
Sep 19 14:56:06 2020|2 |LANE_8_LOW_RX_POW|CR |163926 |Central Proces|0x1005001
Sep 19 14:56:06 2020|2 |LANE_7_LOW_RX_POW|CR |163926 |Central Proces|0x1005001
Sep 19 14:56:06 2020|2 |LANE_6_LOW_RX_POW|CR |163926 |Central Proces|0x1005001
Sep 19 14:56:06 2020|2 |LANE_5_LOW_RX_POW|CR |163926 |Central Proces|0x1005001
Sep 19 14:56:06 2020|2 |LANE_4_LOW_RX_POW|CR |163926 |Central Proces|0x1005001
Sep 19 14:56:06 2020|2 |LANE_3_LOW_RX_POW|CR |163926 |Central Proces|0x1005001
Sep 19 14:56:06 2020|2 |LANE_2_LOW_RX_POW|CR |163926 |Central Proces|0x1005001
Sep 19 14:56:06 2020|2 |LANE_1_LOW_RX_POW|CR |163926 |Central Proces|0x1005001
Sep 19 14:56:06 2020|2 |LANE_0_LOW_RX_POW|CR |163926 |Central Proces|0x1005003
Sep 19 14:56:06 2020|2 |LANE_1_LOW_RX_POW|CR |163926 |Central Proces|0x1005003
Sep 19 14:56:06 2020|2 |LANE_2_LOW_RX_POW|CR |163926 |Central Proces|0x1005003
Sep 19 14:56:06 2020|2 |LANE_3_LOW_RX_POW|CR |163926 |Central Proces|0x1005003
Sep 19 14:56:06 2020|2 |LANE_4_LOW_RX_POW|CR |163926 |Central Proces|0x1005003
Sep 19 14:56:06 2020|2 |LANE_5_LOW_RX_POW|CR |163926 |Central Proces|0x1005003
Sep 19 14:56:06 2020|2 |LANE_6_LOW_RX_POW|CR |163926 |Central Proces|0x1005003
Sep 19 14:56:06 2020|2 |LANE_7_LOW_RX_POW|CR |163926 |Central Proces|0x1005003
Sep 19 14:56:06 2020|2 |LANE_8_LOW_RX_POW|CR |163926 |Central Proces|0x1005003
Sep 19 14:56:06 2020|2 |LANE_9_LOW_RX_POW|CR |163926 |Central Proces|0x1005003
**********************
Is this normal before connecting these CPAKS packs with the other end point? We are not sure if this is a problem with the A9K-4X100GE-SE
Any help will be
Solved! Go to Solution.
09-19-2020 11:38 AM
If its not connected then yes normal, check show controller <int> phy to get the dBm measurement for each lane and compare to the given alarm values in the output. Its probably -40dBm which means no light and would indicate an alarm being set.
If after connecting the other end of the port the low rx value is still there then we need to investigate the other side to see the tx power, any dampeners on the link, how long the fiber run is, etc to make sure everything is within specs.
Sam
09-19-2020 11:38 AM
If its not connected then yes normal, check show controller <int> phy to get the dBm measurement for each lane and compare to the given alarm values in the output. Its probably -40dBm which means no light and would indicate an alarm being set.
If after connecting the other end of the port the low rx value is still there then we need to investigate the other side to see the tx power, any dampeners on the link, how long the fiber run is, etc to make sure everything is within specs.
Sam
09-20-2020 08:07 PM
Thank you so much Sam! That would explain it. Yes Show Controllers show -40dBm. Much appreciated!
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