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Silver

www.cisco.com down?

Is anyone else getting a DNS error when trying to access www.cisco.com?

I get a protocol redirect from http://www.cisco.com to https://www.cisco.com, and then the following error

Service Unavailable - DNS failure

The server is temporarily unable to service your request.  Please try again later.

Reference #11.14dcf180.1341364559.1740d61

I'm pretty sure it's not my DNS - I can traceroute to www.cisco.com and it resolves fine. Logging into the support forums works via the SSO site, as does the support forums themselves (obviously), but the main site just doesn't respond.

Cheers

Everyone's tags (1)
1 ACCEPTED SOLUTION

Accepted Solutions
Community Member

www.cisco.com down?

I am also facing the problem. Cant seem to enter the cisco web site.

28 REPLIES
Hall of Fame Super Gold

Re: www.cisco.com down?

Must be your shoes Darren.  

Silver

www.cisco.com down?

leolaohoo wrote:

Must be your shoes Darren.  

Hey! There's nothing wrong with my shoes! They're all shiney and bright, even! :-)

Silver

www.cisco.com down?

Must be something weird in the latest update to Firefox nightly causing it, because when I Google cisco.com and follow the link, it works.

Weird!

Community Member

Thank you for the trick! I

Thank you for the trick! I have been experiencing the same issue for a couple of hours today:

Service Unavailable - DNS failure

The server is temporarily unable to service your request. Please try again later.

Reference #11.c90a1602.1433593459.151c758f

I try to access the topics directly as I am preparing for the CCIE lab so I am trying to get familiar with the way topics are organized. It works if accessing through google. Hopefully google will be available if the "Select Your Product..." page will be unavailable during the exam :)

 

Thank you,

 

Zoltan

Community Member

www.cisco.com down?

I am also facing the problem. Cant seem to enter the cisco web site.

Silver

Re: www.cisco.com down?

Well, at least it wasn't just me!

So Ner Ner, Leo! Not my shoes at all!

:-)

Community Member

www.cisco.com down?

I am also receiving a DNS error when trying cisco.com/go/software. This error also shows when I go directly to support and enter a specific phone model, the next screen shows this error:

Service Unavailable - DNS failure

The server is temporarily unable to service your request. Please try again later.

Reference #11.493de93f.1354557577.2c2c6266

Community Member

www.cisco.com down?

Experiencing the same problem just about all day today.  Have tried from several computers and locations.

Service Unavailable - DNS failure

The server is temporarily unable to service your request.  Please try again later.

Reference #11.493de93f.1354573371.2ec96f5c

Community Member

www.cisco.com down?

Same here from Vancouver, Canada:

Service Unavailable - DNS failure

The server is temporarily unable to service your request.  Please try again later.

Reference #11.493de93f.1354578772.2f96bdd4

Happens at complete random times. Some computers can't get to www.cisco.com at all and other will be able to browse for awhile and then hit it.

Community Member

www.cisco.com down?

Everyone here has been reporting this.  Different browsers (IE, Chrome, FF), I even got it at home a few days back, so I know it is not our network.

Community Member

www.cisco.com down?

I had the same issue, but DNS is resolving for me now as 12/4/2012 @ 7:50AM PST.  Please refresh your browser.

Community Member

www.cisco.com down?

I doubt this is a "my DNS issue."  This message is an HTML formated response to the users of their web servers.  Cisco's DNS server arrays must be experiencing problems as their servers can't resolve something nessesary for forwards/logging/misc.

I wonder if eventually Cisco will remove the details of the HTML response to obfuscate the matter and we'll get a vague response.

Community Member

Re: www.cisco.com down?

I narrowed down this problem to Akamai's CDN -- which Cisco.com uses.  Note that the details below might change but this is as it exists at the moment.

You can see below that www.cisco.com. makes its way through a pile of CNAME's before arriving at e144.dscb.akamaiedge.net. which has an A record.

C:\Users\johnu>dig @8.8.8.8 www.cisco.com. a

; <<>> DiG 9.8.1 <<>> @8.8.8.8 www.cisco.com. a
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 16243
;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;www.cisco.com.                 IN      A

;; ANSWER SECTION:
www.cisco.com.          2537    IN      CNAME   www.cisco.com.akadns.net.
www.cisco.com.akadns.net. 225   IN      CNAME   wwwds.cisco.com.edgekey.net.
wwwds.cisco.com.edgekey.net. 1304 IN    CNAME   wwwds.cisco.com.edgekey.net.globalredir.akadns.net.
wwwds.cisco.com.edgekey.net.globalredir.akadns.net. 228 IN CNAME e144.dscb.akamaiedge.net.
e144.dscb.akamaiedge.net. 19    IN      A       184.87.144.170

;; Query time: 31 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Tue Dec 04 10:36:48 2012
;; MSG SIZE  rcvd: 212

From here I used Firefox's Live HTTP Header extension to make a request to e144.dscb.akamaiedge.net. while sending www.cisco.com for the Host: header.

Banging on the Replay button a few times yields different results.  Sometimes www.cisco.com loads (without CSS and such -- which is fine given the crude test) and most of the time the venerable Service Unavailable error rears its head.

This looks like an Akamai CDN web server or service issue.

Please work with Akamai to get this fixed as this issue is greatly impacting our ability to interact with Cisco (support, downloads, data sheets, etc.).

Community Member

Re: www.cisco.com down?

The end of my conversation with 184.87.144.170...

HTTP/1.1 503 Service Unavailable
Server: AkamaiGHost
Mime-Version: 1.0
Content-Type: text/html
Content-Length: 269
Expires: Tue, 04 Dec 2012 18:44:02 GMT
Date: Tue, 04 Dec 2012 18:44:02 GMT
Connection: keep-alive
Vary: Accept-Encoding



Service Unavailable

Service Unavailable - DNS failure


The server is temporarily unable to service your request.  Please try again
later.


Reference #11.493de93f.1354646642.36acd462

      

EDIT: Oh, this was http://www.cisco.com.  I can't get to the support page to open a new TAC case, I go to support..cisco.com, I get refered to http://www.cisco.com/tac/, but again, it responds with "Service Unavailable."  I've been getting this since last week, however, it is much more frequent today.

Community Member

www.cisco.com down?

This has been an issue for us for about a week now as well.

Come on Cisco...fix your site.  > : (

Community Member

www.cisco.com down?

We too have this issue. We have a workaround (not a fix) from our ISP (who is working on why this is happening.)

  • We issue an "IPCONFIG /flushdns" at the command line.
  • We insert the IP address of the DNS routers our ISP has assigned to us.
  • There are several ways to do this - here is one. (If you have documents open, save and close them to be safe, you will be re-initializing the NIC on this machine
    • Go to Control Panel
    • Click on "Network and Sharing Center"
    • Select "Change Adapter Settings"
    • Highlight the active NIC
    • Right-click the icon for that NIC
    • Select "Properties"
    • Select the appropriate IP version (IPv4 or v6) - "Internet Protocol Version 4", etc.,
    • Find the section titled "Use the following DNS server addresses"
    • Put in the addresses for the primary and secondary DNS server addresses your ISP has assigned to you.
    • Click "OK" until you are out of the Properties box.
    • Allow some time (30 seconds should be enough - but if you encounter issues with resolution, re-start the computer.)
  • You should now be able to get to any portion of Cisco.com.

Again, I underline the fact that this is just a workaround and the problem still remains. It could be a broken DNS record or something else entirely. Contact your ISP if you are at a standstill.

Good luck - this is not a trivial issue Cisco! Please understand that there are customers out there that are experiencing problems researching, supporting and administering router, switches and other equipment.

Paul

Community Member

Re: www.cisco.com down?

@pmettewie

That works because changing name servers for recursive resolution (to your ISP NS's or some other) -- the source IP seen by the Akamai DNS load balancer changes to the new name server -- and the Akamai records returned send you to a different Akamai data center -- presumably one that does not have this problem.

However, the Akamai data centers getting returned to a bunch of us in this thread are/have been suffering from this problem.

Changing preferred name servers or recursive resolvers for an enterprise shouldn't (or can't in some cases) be done on a whim.  A conditional forwarder (Microsoft DNS) could be used as well -- we implemented one yesterday (using another ISP's NS's only for cisco.com and it helped).

On a side note the Akamai data center we were being redirected to for www.cisco.com (final A record of 184.87.144.170) does seem to be working a lot better today.

Community Member

www.cisco.com down?

Thanks for the input on this.  We have people digging into the problem.  Sorry for any inconvenience.

Scott Huegel

Analyst Business Operations

Cisco

Hall of Fame Super Gold

www.cisco.com down?

Hi Scott,

Is this issue affecting emails?

I have four separate TAC Cases and I have not received any emails from TAC engineers all day since yesterday.

Community Member

www.cisco.com down?

Hello Leo,

No there shouldn't be any impact on email.  You might consider a follow-up via the CIN.

Scott Huegel

Analyst Business Operations

Cisco

Hall of Fame Super Gold

www.cisco.com down?

Hi Scott,

Me bad.  MS email cluster got f**k.  Now I know where the term "cluster faq" comes from. 

Community Member

www.cisco.com down?

We continue to investigate the problems above and have opened a case with Akamai.

Scott Huegel

Analyst Business Operations

Cisco

Community Member

www.cisco.com down?

Scott,

Please post an update when you have one.  This issue is having a major impact on our ability as a partner and reseller to conduct business with Cisco.

Community Member

www.cisco.com down?

If anyone is experiencing this problem, if you could kindly click on this link, just a click is required, and this will help us gain additional information for Akamai:

http://ip.akamai.com/case/B-C-HP5ULX

Thank you for your patience and support.

We continue to work on this problem.

Scott

Hall of Fame Super Gold

www.cisco.com down?

Thank you for submitting your diagnostic information. No further action required.

Tracking Number: 1453

Thanks for the link, Scott.

No issue for me.

Community Member

www.cisco.com down?

Thank you everyone for your patience.  We believe the problem has been fully corrected.  It additional problems are encountered, please let us know.

Again, thank you for your patience.

Scott Huegel

Analyst Business Operations

Cisco

Community Member

www.cisco.com down?

Looks good for me.

Thanks Scott!

Community Member

Broken again in the last week

Broken again in the last week.

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