Cisco CFP2-WDM-D-1H memungkinkan 1 unit CFP2 mendapatkan bandwidth 200G dengan mengubah port-mode-nya. Berikut config di platform NCS5500:
controller Optics 0/0/2/2 port-mode speed 200G mod 16qam fec 15sdfec diff disable
setelah di-commit maka interface akan reset dan memecah 1 port (defaultnya 0/0/2/2/0) menjadi 0/0/2/2/0 & 0/0/2/2/1. Lalu konfig seperti biasa, misalnya di-lag.
RP/0/RP0/CPU0:NCS5500-1#
RP/0/RP0/CPU0:NCS5500-1#show int be100
Sat Jun 26 12:08:40.074 WIB
Bundle-Ether100 is up, line protocol is up
Interface state transitions: 5
Hardware is Aggregated Ethernet interface(s), address is 94ae.f0be.0645
Internet address is 192.168.1.0/31
MTU 1514 bytes, BW 200000000 Kbit (Max: 200000000 Kbit)
reliability 255/255, txload 0/255, rxload 0/255
Encapsulation ARPA,
Full-duplex, 200000Mb/s
loopback not set,
Last link flapped 00:09:23
ARP type ARPA, ARP timeout 04:00:00
No. of members in this bundle: 2
HundredGigE0/0/2/2/0 Full-duplex 100000Mb/s Active
HundredGigE0/0/2/2/1 Full-duplex 100000Mb/s Active
Last input 00:00:00, output 00:00:00
Last clearing of "show interface" counters never
5 minute input rate 1000 bits/sec, 2 packets/sec
5 minute output rate 1000 bits/sec, 2 packets/sec
1420 packets input, 168443 bytes, 0 total input drops
0 drops for unrecognized upper-level protocol
Received 3 broadcast packets, 397 multicast packets
0 runts, 0 giants, 0 throttles, 0 parity
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
5667 packets output, 686861 bytes, 0 total output drops
Output 3 broadcast packets, 4644 multicast packets
0 output errors, 0 underruns, 0 applique, 0 resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
RP/0/RP0/CPU0:NCS5500-1#
menghemat biaya transceiver dan patch cord. Namun apakah performance-nya sama dengan 2 fisikal CFP? mari kita tengok dan monitor. Note: di lab di atas hanya menggunakan 2 unit NCS 5500, saling konek menggunakan CFP2.
Eh ternyata hasil observasi di lab kemarin kurang. Di production baru ter-capture, muncul log:
LC/0/0/CPU0:2021 Dec 18 03:23:23.472 WIB: coherent_driver[177]: %L1-PMENGINE-4-TCA : Port CoherentDSP0/0/2/2 reports FEC BIT-EC(NE) PM TCA with current value 281119552, threshold 903330 in current 15-min interval window
LC/0/0/CPU0:2021 Dec 18 03:23:23.472 WIB: coherent_driver[177]: %L1-PMENGINE-4-TCA : Port CoherentDSP0/0/2/2 reports FEC BIT-EC(NE) PM TCA with current value 281119552, threshold 8671968 in current 1-day interval window
LC/0/0/CPU0:2021 Dec 18 03:23:23.472 WIB: coherent_driver[177]: %L1-PMENGINE-4-TCA : Port CoherentDSP0/0/2/2 reports FEC BIT-EC(NE) PM TCA with current value 281119552, threshold 903330 in current 30-sec interval window
Nampaknya karena defaultnya 30s, 15m dan 24h.
RP/0/RP0/CPU0:ios-1(config)#controller coherentDSP 0/0/2/2 pm ?
15-min Configure pm parameters of 15 minute interval
24-hour Configure pm parameters of 24 hour interval
30-sec Configure pm parameters of 30 second interval
RP/0/RP0/CPU0:NCS5500-1(config)#
Untuk itu kita coba disable PM nya dan monitor 24h.
controller CoherentDSP 0/0/2/2 perf-mon disable
Nah, begimana jika ASR9000 <> NCS 5500 atau ASR9K <>ASR9K. Based on guidance dari TAC dan dokumentasi interface configuration guide, untuk ASR9k itu musti dikonfig mode 200G juga.
ASR9000 (kita tancep MOD400 dan MPA-nya slot 7):
hw-module location 0/7/CPU0 bay 0 port 0 port-mode 2xHundredGigE-16QAM