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Contributor
mike.hemingway@tradition-na.co
Posts: 13
Registered: ‎11-09-2010
0

slow internet access need help to troubleshoot

I'm new to juniper and i'm looking for some useful commands that will help me troubleshoot an intermittent internet outage and

slownesss issues we've been experiencing?  Can someone tell me what the juniper equivalent would be to the cisco show int fa0/1 as well.  I'm looking for status of line, packet loss, and input/output errors on the line. Any help would be greatly appreciated.

 

 

Trusted Contributor
Saurabh
Posts: 171
Registered: ‎09-08-2009
0

Re: slow internet access need help to troubleshoot

1. What Juniper platform you are using?

 

2. What is the media type of your internet link?

 

3. pls post show interface <interface-name> extensive | match err

 

4. sho pfe statistics err or show pfe traffic error can give you pfe related errors.

 

5. Do you run any routing protocols with your ISP? 

 

if yes

 

6. Check the routing protocols flaps if any?

 

7. Also you may check the Link latency regularly or at the time of outage.

 

8. Ping default gateway from your LAN at the time of issue and isolate your LAN from this issue.

 

These all are actually basic steps of troubleshooting. 

 

I am unaware of what you have performed as of now.

 

So answers to above questions can give us some idea to think further.

 

Hope these helps.

 

Accept the solution if these answers your query and Kudos would be great if you think i earned it.

Saurabh Joshi
--------------------------------------------------------------------------------------------------
CCNA,CCIP/JNCIA-EX,ER/JNCIS-ER,SEC,M/JNCIP-M
Contributor
mike.hemingway@tradition-na.co
Posts: 13
Registered: ‎11-09-2010
0

Re: slow internet access need help to troubleshoot

What Juniper platform you are using?

J4350

 

What is the media type of your internet link?

ethernet

 

Do you run any routing protocols with your ISP? 

bgp (just looked and there hasn't be any bgp flaps in

5 days)

 

 

 

 

Trusted Expert
dpapana
Posts: 282
Registered: ‎04-01-2011
0

Re: slow internet access need help to troubleshoot

Check the MTU along the path

Regards,
Dumitru Papana
Contributor
milind.mistry@essar.com
Posts: 53
Registered: ‎12-24-2010
0

Re: slow internet access need help to troubleshoot

Do you use the router in Flow mode??

 

Can you check during the time of problem :--

 

monitor interface <interface where the Internet link is connected>----> check if you are getting any errors

 

During the time of problem do check the traceroute to the any internet IP address and check where you are exactly getting the latancy .. that help you to check whether the problem is CPE side or PE side.

 

Hope this helps..

 

For more steps, appriciate if you post your configuration.

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