4-11
Cisco ONS 15454 SONET/SDH ML-Series Multilayer Ethernet Card Software Feature and Configuration Guide, R4.0
78-15224-02
Chapter 4 Configuring Interfaces
POS on the ML-Series card
B3 BER thresholds:
SFBER = 1e-5, SDBER = 1e-7
1106 total input packets, 80059 post-HDLC bytes
0 input short packets, 80714 pre-HDLC bytes
0 input long packets , 205 input runt packets
17 input CRCerror packets , 0 input drop packets
0 input abort packets
1107 input packets dropped by ucode
0 total output packets, 0 output pre-HDLC bytes
0 output post-HDLC bytes
Carrier delay is 200 msec
The show interface pos0 command shows scrambling.
daytona#show interface pos0
POS0 is up, line protocol is up
Hardware is Packet/Ethernet over Sonet, address is 0005.9a3b.bf90 (bia 0005.9a3b.bf90)
MTU 1500 bytes, BW 1244160 Kbit, DLY 100 usec,
reliability 243/255, txload 1/255, rxload 166/255
Encapsulation ONS15454-G1000, crc 32, loopback not set
Keepalive set (10 sec)
Scramble enabled
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 2385314109 bytes
Received 0 broadcasts (0 IP multicast)
0 runts, 0 giants, 0 throttles
0 parity
2839625 input errors, 2839625 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
9 packets output, 3393 bytes, 0 underruns
0 output errors, 0 applique, 0 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
Third-Party POS Interfaces
If a Cisco POS interface fails to come up when connected to a third-party device, confirm the scrambling
and cyclic redundancy check (CRC) settings as well as the advertised value in the C2 byte. On routers
from Juniper Networks, configuring RFC 2615 mode sets the following three parameters:
• Scrambling enabled
• C2 value of 0x16
• CRC-32
Previously, when scrambling was enabled, these third-party devices continued to use a C2 value of 0xCF,
which did not properly reflect the scrambled payload.
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