Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
New Member

Internet disconnecting more frequently

Hi,


Cisco router in Melbourne is disconnecting more frequently Apparently it disconnected 4 times today, If it is restarted then it works again for a while, but eventually it disconnects from the internet and doesn’t attempt to reconnect
Can anyone help me ? this router has been a problem never have managed to get it to be reliable
the question is whether there is a hardware problem or a config problem
im sure the internet stops and starts all the time but this router doesn't appear to reconnect
also if swap router to BILLION from Cisco then all is fine

interface Dialer0
mtu 1454
ip address negotiated
ip mtu 1452
ip nat outside
ip virtual-reassembly
encapsulation ppp
ip route-cache flow
ip tcp adjust-mss 1452
dialer pool 1
dialer-group 1
ppp authentication pap callin
ppp chap refuse
ppp pap sent-username XXXXXXXXXXXXXXXXXXX password XXXXXXXX

Warm Regards

Vikrant

5 REPLIES

Re: Internet disconnecting more frequently

Hello

Do you have any logs regarding the reason why it get disconnected?

Calin

New Member

Re: Internet disconnecting more frequently

Hello,

Thanks for your quick reply, I didn't get ant error or any log, i am not sure why,
if  it's disconnects from the internet and doesn’t attempt to reconnect, it should be connect Automatically, but if i restarted manualy by using power switch then it works again. I am very much irritate from this issue it will be a great if you will help me, i did post this issue on many forums but same issue yet

Pls look logs

Cisco877#sh log
Syslog logging: enabled (1 messages dropped, 0 messages rate-limited,
                0 flushes, 0 overruns, xml disabled, filtering disabled)

No Active Message Discriminator.

No Inactive Message Discriminator.


    Console logging: level debugging, 50 messages logged, xml disabled,
                     filtering disabled
    Monitor logging: level debugging, 0 messages logged, xml disabled,
                     filtering disabled
    Buffer logging:  level debugging, 50 messages logged, xml disabled,
                     filtering disabled
    Logging Exception size (4096 bytes)
    Count and timestamp logging messages: disabled
    Persistent logging: disabled

No active filter modules.

ESM: 0 messages dropped

    Trap logging: level informational, 54 message lines logged
        Logging to 192.168.8.12  (udp port 514,  audit disabled,
              authentication disabled, encryption disabled, link up),
              54 message lines logged,
              0 message lines rate-limited,
              0 message lines dropped-by-MD,
              xml disabled, sequence number disabled
              filtering disabled

Log Buffer (4096 bytes):
el_team
*Mar  4 03:28:18.331: %SNMP-5-COLDSTART: SNMP agent on host Cisco877 is undergoi
ng a cold start
*Mar  4 03:28:18.379: %SSH-5-ENABLED: SSH 1.99 has been enabled
*Mar  4 03:28:18.383: %CRYPTO-6-EZVPN_CONNECTION_DOWN: (Client)  User=  Group=EZ
VPN_GROUP_1  Server_public_addr=XX.XX.XX.XX
*Mar  4 03:28:18.431: %DOT11-6-FREQ_SCAN: Interface Dot11Radio0, Scanning freque
ncies for 35 seconds
*Mar  4 03:28:18.435: %CRYPTO-6-ISAKMP_ON_OFF: ISAKMP is OFF
*Mar  4 03:28:18.435: %CRYPTO-6-GDOI_ON_OFF: GDOI is OFF
*Mar  4 03:28:18.439: %CRYPTO-6-ISAKMP_ON_OFF: ISAKMP is ON
*Mar  4 03:28:18.455: %LINK-5-CHANGED: Interface Dot11Radio0, changed state to r
eset
*Mar  4 03:28:18.455: %LINEPROTO-5-UPDOWN: Line protocol on Interface BVI1, chan
ged state to up
*Mar  4 03:28:18.483: %SYS-6-LOGGINGHOST_STARTSTOP: Logging to host 192.168.8.12
port 514 started - CLI initiated
*Mar  4 03:28:19.519: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, cha
nged state to up
*Mar  4 03:28:19.519: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio
0, changed state to down
*Mar  4 03:28:19.871: %LINK-5-CHANGED: Interface NVI0, changed state to administ
ratively down
*Mar  4 03:28:19.999: %LINK-3-UPDOWN: Interface FastEthernet3, changed state to
up
*Mar  4 03:28:19.999: %LINK-3-UPDOWN: Interface FastEthernet1, changed state to
up
*Mar  4 03:28:19.999: %LINK-3-UPDOWN: Interface FastEthernet0, changed state to
up
*Mar  4 03:28:20.871: %LINEPROTO-5-UPDOWN: Line protocol on Interface NVI0, chan
ged state to down
*Mar  4 03:28:20.999: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthern
et3, changed state to down
*Mar  4 03:28:20.999: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthern
et2, changed state to up
*Mar  4 03:28:20.999: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthern
et1, changed state to down
*Mar  4 03:28:20.999: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthern
et0, changed state to down
*Mar  4 03:28:24.463: %PKI-6-AUTOSAVE: Running configuration saved to NVRAM
*Mar  4 03:28:40.511: %LINK-3-UPDOWN: Interface ATM0, changed state to up
*Mar  4 03:28:41.515: %LINEPROTO-5-UPDOWN: Line protocol on Interface ATM0, chan
ged state to up
*Mar  4 03:28:55.343: %DIALER-6-BIND: Interface Vi1 bound to profile Di0
*Mar  4 03:28:55.359: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state t
o up
*Mar  4 03:28:56.483: %LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-Ac
cess1, changed state to up
*Mar  4 03:28:56.619: %DOT11-6-FREQ_USED: Interface Dot11Radio0, frequency 2412
selected
*Mar  4 03:28:56.623: %LINK-3-UPDOWN: Interface Dot11Radio0, changed state to up

*Mar  4 03:28:57.623: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio
0, changed state to up
*Mar  4 03:29:00.415: %CRYPTO-6-EZVPN_CONNECTION_UP: (Client)  User=vpnadmin  Gr
oup=EZVPN_GROUP_1  Client_public_addr=XX.XX.XX.XX  Server_public_addr=XX.XX
XX.XX NEM_Remote_Subnets=192.168.8.0/255.255.255.0  192.1
*Mar  4 03:33:28.127: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthern
et2, changed state to down
*Mar  4 03:33:28.127: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, cha
nged state to down
*Mar  4 03:33:29.131: %LINK-3-UPDOWN: Interface FastEthernet2, changed state to
down
*Mar  4 03:33:33.083: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, cha
nged state to up
*Mar  4 03:33:34.075: %LINK-3-UPDOWN: Interface FastEthernet2, changed state to
up
*Mar  4 03:33:35.075: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthern
et2, changed state to up
*Mar  4 03:33:51.663: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthern
et2, changed state to down
*Mar  4 03:33:51.663: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, cha
nged state to down
*Mar  4 03:33:52.667: %LINK-3-UPDOWN: Interface FastEthernet2, changed state to
down
*Mar  4 03:33:55.235: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, cha
nged state to up
*Mar  4 03:33:56.227: %LINK-3-UPDOWN: Interface FastEthernet2, changed state to
up
*Mar  4 03:33:57.227: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthern
et2, changed state to up
Cisco877#

Re: Internet disconnecting more frequently

hi,

i've observed bouncing more on the LAN FE ports. what devices are connected behind your 877? if WAN is still intermittent, i would suggest to try replacing the RJ-11 cable or try connecting directly to the phone wall socket without the the splitter or fax connected with it. lastly if all still fails, ask your ISP to have a technician to inspect for any wiring problem.

New Member

Re: Internet disconnecting more frequently

Hello,

Thanks for giving comment, we are mostly using wi- fi, only two system are connected to FE LAN ports by RJ-45, we have issue in All System (WI-FI also LAN), If restarted Cisco Router then it works again for a while, but eventually it disconnects from the internet and doesn’t attempt to reconnect
if I change router menas swap to Billion Router then all is fine,

Please look on Snap when i lossed internet

New Member

Re: Internet disconnecting more frequently

I notice your line attenuation is pretty high at 53.0 dB - this value is the loss of signal strength between the DSLAM and your equipment. Different routers can effect this too, but 53.0db is pretty high and could be effecting the stability if your line. THis could explain why the cisco unit is having issues reconnecting..

It may be that with the billion connected the attenuation is reduced a little.

To give you an idea

20dB and below is outstanding
20dB-30dB is excellent
30dB-40dB is very good
40dB-50dB is good
50dB-60dB is poor and may experience connectivity issues
60dB or above is bad and will experience connectivity issues

Do you have any idea how to reduced it ?
507
Views
0
Helpful
5
Replies
CreatePlease to create content