Velocity Reviews - Computer Hardware Reviews

Velocity Reviews > Newsgroups > Computing > Cisco > Line protocol down on serial NM-4T

Reply
Thread Tools

Line protocol down on serial NM-4T

 
 
Reza
Guest
Posts: n/a
 
      09-28-2005
Hello

I have a cisco 3660 with a NM-4T module installed and 2 serial modems
are conected.

I changed the IOS, after reload the both serial ports Line protocol
went down, ( I test the IOS before without any problem).

I changed back the IOS to originalone and reload, but the Line protocol
on serial interfaces are still down.
I tested the modems with a AS5350 serial interfaces and line protocol
came up and works.

I got many carrier transist on serial interfaces :
Router#sh int s1/0
Serial1/0 is up, line protocol is down
Hardware is M4T
Internet address is 10.2.3.4/24
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation PPP, crc 16, loopback not set
Keepalive set (10 sec)
LCP Listen
Closed: LEXCP, BRIDGECP, IPCP, CCP, CDPCP, LLC2, BACP
Last input 00:00:01, output 00:00:01, output hang never
Last clearing of "show interface" counters 00:43:33
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: weighted fair
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/1/256 (active/max active/max total)
Reserved Conversations 0/0 (allocated/max allocated)
Available Bandwidth 1158 kilobits/sec
5 minute input rate 0 bits/sec, 2 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
6485 packets input, 75226 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
3895 packets output, 46748 bytes, 0 underruns
0 output errors, 0 collisions, 1306 interface resets
0 output buffer failures, 0 output buffers swapped out
1306 carrier transitions DCD=up DSR=up DTR=up RTS=up
CTS=up



the serial config is same as before, no changes.
does my NM-4T damaged ?

any reply helps me.

Reza

 
Reply With Quote
 
 
 
 
www.BradReese.Com
Guest
Posts: n/a
 
      09-28-2005
Hi Reza,

You may wish to investigate Cisco's Solving Serial Connection Problems:

http://www.cisco.com/en/US/products/...08019466b.html

Hope this helps,

Brad Reese
BradReese.Com Cisco Repair Service Experts
http://www.BradReese.Com
1293 Hendersonville Road, Suite 17
Asheville, North Carolina USA 28803
USA & Canada: 877-549-2680
International: 828-277-7272

 
Reply With Quote
 
 
 
 
www.BradReese.Com
Guest
Posts: n/a
 
      09-28-2005
Also Cisco's Understanding the 4-Port Sync Serial Network Module (
NM-4T ):

http://www.cisco.com/en/US/products/...800a93f3.shtml

Brad Reese
Worldwide Cisco Repair
http://www.bradreese.com/cisco-big-iron-repair.htm

 
Reply With Quote
 
Reza
Guest
Posts: n/a
 
      10-08-2005
Hello

I solved the problem,

I was added this command : aaa authorization network default group
radius
by the way my serial encapsulation protocol was PPP.

I removed this command, the problem solved.
nothing about this issue in cisco triuble shooting !!

)
Regards
Reza Toghraee

 
Reply With Quote
 
 
 
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Serial interface "Line Protocol" up/ down question PPrash Cisco 7 10-30-2009 08:14 PM
serial up line protocol down jjbo Cisco 0 06-24-2008 03:43 PM
serial and line protocol up and down constantly- 2811 pont to point to a 1700 RTR Cisco 5 11-01-2007 06:32 AM
Serial Line Protocol is UP & Down Prashant Hardware 0 07-09-2006 01:19 PM
Test Serial to Serial Connection, Protocol Down... Scooter Cisco 5 12-16-2004 04:38 PM



Advertisments