Linux smpwalk tool reports timeout querying Cisco 877 DSL router

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Oct 3rd, 2010
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I am trying to set up Cacti to plot the ADSL values for investigation of systematic dropped carrier.

What am I doing wrong?


#sh run | inc snmp

access-list 11 permit
access-list 100 permit udp host eq snmp

snmp-server community secretword RO 11

snmp-server community public RO

snmp-server host secretword

In Linux console:

$ snmpwalk -v1 -c secretword
Timeout: No Response from

$ ifconfig eth0 : 0
eth0 : 0    Link encap:Ethernet  HWaddr 6C:F0:49:E3:0E:A7 
          inet addr:  Bcast:  Mask:
          Interrupt:31 Base address:0x8000

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Joe Clarke Sun, 10/03/2010 - 17:03
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There's nothing wrong with the config snippets you provide, but this doesn't show the whole picture.  How is ACL 100 applied?  What other ACLs are on this router?  Is the router otherwise reachable from the NMS (e.g. ping, telnet, SSH, etc.)?  Is there a host-based firewall on this Linux host that is blocking outgoing or incoming udp/161 traffic?  Post the output of "show snmp" from the router.

Zenith888 Mon, 10/04/2010 - 06:24
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Apparently I can ping and ssh into the router. There are no firewalls anywhere in this infrastructure.

Joe Clarke Mon, 10/04/2010 - 07:48
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Please post the "show snmp" output as well as the full config (less credentials) if you can.

Zenith888 Wed, 10/13/2010 - 12:03
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public community works though. As I don't have time for this I'll simply give up.


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