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What does LC=down CA=down TM=down LB=down TA=up LA=down

teck0101
Level 1
Level 1

I need to know what LC=down CA=down TM=down LB=down TA=up LA=down stand for. They show up at the botton of a sho int hssi out put

sh int h5/1/0

Hssi5/1/0 is down, line protocol is down

Hardware is HSSI

MTU 1500 bytes, BW 45045 Kbit, DLY 200 usec,

reliability 255/255, txload 1/255, rxload 1/255

Encapsulation FRAME-RELAY IETF, crc 16, loopback not set

Keepalive set (10 sec)

LMI enq sent 0, LMI stat recvd 0, LMI upd recvd 0, DTE LMI down

LMI enq recvd 0, LMI stat sent 0, LMI upd sent 0

LMI DLCI 1023 LMI type is CISCO frame relay DTE

Broadcast queue 0/256, broadcasts sent/dropped 0/0, interface broadcasts 0

Last input never, output never, output hang never

Last clearing of "show interface" counters 1w3d

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, 0 bytes, 0 no buffer

Received 0 broadcasts (0 IP multicast)

0 runts, 0 giants, 0 throttles

0 parity

0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort

0 packets output, 0 bytes, 0 underruns

0 output errors, 0 applique, 31172 interface resets

0 output buffer failures, 0 output buffers swapped out

0 carrier transitions

LC=down CA=down TM=down LB=down TA=up LA=down

1 Accepted Solution

Accepted Solutions

cdfowlie
Level 1
Level 1

These refer to the signal asserted on specific pins on the HSSI interface IIRC...

LC = Loopback C

CA = DCE Available

TM = Test Mode

LB = Loopback B

TA = DTE Available

LA - Loopback A

TA is asserted outbound. Makes sense for this to be up even though the interface is down.

HTH

-Colin

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3 Replies 3

cdfowlie
Level 1
Level 1

These refer to the signal asserted on specific pins on the HSSI interface IIRC...

LC = Loopback C

CA = DCE Available

TM = Test Mode

LB = Loopback B

TA = DTE Available

LA - Loopback A

TA is asserted outbound. Makes sense for this to be up even though the interface is down.

HTH

-Colin

Thank you very much

Hi there. I used the instructions of this cisco document - Document ID: 14197 Back-to-Back Router HSSI Interfaces - to connect the two 7204 routers, but I couldn't get the interfaces to go UP/UP after many tries. Please advise.