Archive for June, 2010

ipv6 fragmentation

Hi Experts,

I have question regarding Ipv6 fragmentation. I know that MTU discovery happens in case of Ipv6 and source can fragment packet accordingly. My question is if source is unable to fragment the packet, is there any way to fragement packet ipv6 in core if encountered with smaller MTU then packet size ?

Thanks, Gaurav

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Voice Loop H323!!

Hi all,

Has anyone seen this error before?

*Apr 13 16:45:51.715: %CALL_CONTROL-6-CALL_LOOP: The incoming call has a global identfier already present in the list of currently handled calls. It is being refused. Cisco GW (7200) is connected to an Ericsson PBX via E1 QSIG. Call is originating from an Avaya phone via H323 destined to a voice mail hooked up to the Ericsson PBX.

The rest of the debug is as follows:

*Apr 13 16:45:41.714: ISDN Se1/0:15 Q931: Applying typeplan for sw-type 0×16 is 0×2 0×1, Calling num 1234 *Apr 13 16:45:41.714: ISDN Se1/0:15 Q931: Applying typeplan for sw-type 0×16 is 0×0 0×0, Called num 5678 *Apr 13 16:45:41.714: ISDN Se1/0:15 Q931: TX -> SETUP pd = 8 callref = 0×00A2 Bearer Capability i = 0×9090A3 Standard = CCITT Transfer Capability = 3.1kHz Audio Transfer Mode = Circuit Transfer Rate = 64 kbit/s Channel ID i = 0xA98381 Exclusive, Channel 1 Facility i = 0×9FAA06800100820100A113020118020100800B4176617961203435373030 Display i = ‘John’ Calling Party Number i = 0×2180, ‘1234′ Plan:ISDN, Type:National Called Party Number i = 0×80, ‘5678′ Plan:Unknown, Type:Unknown *Apr 13 16:45:41.802: ISDN Se1/0:15 Q931: RX <- SETUP_ACK pd = 8 callref = 0×80A2 Channel ID i = 0xA98381 Exclusive, Channel 1 *Apr 13 16:45:41.822: ISDN Se1/0:15 Q931: RX <- CALL_PROC pd = 8 callref = 0×80A2 Progress Ind i = 0×8181 – Call not end-to-end ISDN, may have in-band info *Apr 13 16:45:41.826: ISDN Se1/0:15 Q931: RX <- PROGRESS pd = 8 callref = 0×80A2 Progress Ind i = 0×8181 – Call not end-to-end ISDN, may have in-band info *Apr 13 16:45:41.922: ISDN Se1/0:15 Q931: RX <- FACILITY pd = 8 callref = 0×80A2 Facility i = 0×9FAA06800100820100A164020101020113305C0A0101300BA5090A0104120437373939020101400504039090A3A10DA00BA5090A0100120436323039820102A411A00FA10A0A0102120534353730300A0101A50D800B4176617961203435373030A70C800A4D6F64656C204E6F6465 *Apr 13 16:45:41.922: ISDN Se1/0:15 **ERROR**: isdn_init_fac_data: No Opval 0 *Apr 13 16:45:51.659: ISDN Se1/0:15 Q931: RX RELEASE pd = 8 callref = 0×00A2 *Apr 13 16:45:51.695: ISDN Se1/0:15 Q931: RX <- RELEASE_COMP pd = 8 callref = 0×80A2 *Apr 13 16:45:51.715: %CALL_CONTROL-6-CALL_LOOP: The incoming call has a global identfier already present in the list of currently handled calls. It is being refused.

Cheers,

Emir

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Awesome Deal On Twitter

Brad: I just saw the tweet – what a deal – the first two people to come to your booth and say CCBOOTCAMP ROCKS gets a $1000 scholarship for an ILT class. Wish I was still studying!!!!!

Thanks Larry Hadrava CCIE #12203 Check Out My Blog http://ccie12203.wordpress.com

On 6/29/10 11:40 PM, “Brad Ellis” wrote:

> What a GREAT day and evening Tuesday at Cisco Live 2010 Las Vegas! Cisco > had forecasted 10,000 attendees this year, but instead, the turnout is > over 13,500. I got the opportunity to run into a bunch of groupstudy > folks including Narbik, Scott, Marko, Nate, and others. > > The CCIE/CCDE Netvet reception was fantastic. Lots of good food and good > Q&A with John Chambers. Joe Pinto, Jeanne Dunn, and Erik Ullanderson > attended the CCIE party along with the hundreds of CCIEs. What a blast. > If you didn’t make it to this year’s Cisco Live in Las Vegas, make sure > you attend next year. > > John Chambers even stopped by the CCBOOTCAMP booth to spin the prize > wheel: > > > I’d be curious to know what others have thought of this year’s Cisco > Live. I personally feel Cisco has really stepped things up from the past > couple years. > > Don’t forget about the customer appreciation event this Wednesday > evening at the MGM Grand Arena starting at 7.30pm! Hope to see you > there. > > thanks, > Brad Ellis > CCIE#5796 (R&S / Security) > CCSI# 30482 > CEO / President > CCBOOTCAMP – Cisco Learning Solutions Partner (CLSP) > Email: brad@ccbootcamp.com > Toll Free: 877-654-2243 > International: +1-702-968-5100 > Skype: skype:ccbootcamp?call > FAX: +1-702-446-8012 > YES! We take Cisco Learning Credits! > Training And Remote Racks: http://www.ccbootcamp.com > > > Blogs and organic groups at http://www.ccie.net > > _______________________________________________________________________ > Subscription information may be found at: > http://www.groupstudy.com/list/CCIELab.html > > > > > > >

Thanks Larry Hadrava CCIE #12203 Check Out My Blog http://ccie12203.wordpress.com

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Cisco search plugins

Some of you may find this helpful: http://www.cisco.com/web/tsweb/searchplugins/plugin_homepage.html#

-nick

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IPIPGW Question

Hi All

I tried to configure IPIPGW (CUBE) for my testing. When phone A (Zone Local A) dial phone B (Zone Remote B), I hear ringback on phone A when phone B pick up the call. After checking, I need to uncheck the box ” Wait for Far End H.245 Terminal Capability” under trunk configuration in CUCM.

I would like to know why I need to uncheck this box for IPIPGW (CUBE). Does IPIPGW does not suppot H.245? Can anyone provide some link for this issue.

Thanks

Best Regards

David

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OSPF @ Frame-relay

Hi GS,

Besides labs from vendors out there, anyone would have any material on OSPF @ Frame-relay ?

I need to be able to implement it on any type of scenario on the lab and this is something that I get stuck sometimes.

Best regards,

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2*3560 For Sale

Dear All,

I have 2 * 3560 switches with EMI in almost brand new condition which I used for lab exam preparation. So kindly contact me directly if anyone is interested.

Kindly note that switches are available in UAE.

Thanks & Regards,

Mujeeb

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Sparse mode autorp listener

I am doing a really basic configuration in Narbik’s Multicast unsing autorp listener. I entered the solution verbatim and can’t seem to get it to work.

I have entered the following commands on all routers

ip multicast-routing ip pim autorp listener

ip pim sparse-mode <- on every interface

Then on one route I enter

ip pim send-rp-announce Loopback0 scope 5 ip pim send-rp-discovery Loopback0 scope 5 interval 5

Problem is that I don't see the PIM Group-to-RP Mappings at ANY router other than the one this is configured on.

I do a debug and see *Mar 1 01:15:25.547: Auto-RP(0): Build RP-Discovery packet *Mar 1 01:15:25.547: Auto-RP: Build mapping (224.0.0.0/4, RP:1.1.1.3), PIMv2 v1, *Mar 1 01:15:25.551: Auto-RP(0): Send RP-discovery packet of length 48 on Serial1/0.32 (1 RP entries) *Mar 1 01:15:25.555: Auto-RP(0): Send RP-discovery packet of length 48 on Serial1/0.35 (1 RP entries) *Mar 1 01:15:25.555: Auto-RP(0): Send RP-discovery packet of length 48 on Loopback0(*) (1 RP entries)

So it is sending, but I see nothing at the routers directly attached when debugging. GNS error???

MPPP vs MFR

MPPP vs. MFR. When should I use one vs the other? I can already hear someone saying “pay attention to the requirements of the lab question”, but I am interested to hear from the experts about what clues would lead you to one vs another.

Thanks so much.

-Brian

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What’s Going On At Cisco Live?

Did anyone there get to see the demo of Cius? If so, anybody think this is going to spawn a new CCIE Video or UC track? If Video is the new Voice, like Chambers said, they probably will need to add it to the never ending list of tracks.

On Mon, Jun 28, 2010 at 11:35 PM, Larry Hadrava wrote:

> Do you have stories to chare about your Cisco Live 2010 experience? > Drop me a line and I9ll post your experiences on my blog. > Read about my daily exploits here: http://ccie12203.wordpress.com > > Thanks > Larry Hadrava > CCIE #12203 > Check Out My Blog http://ccie12203.wordpress.com > > > Blogs and organic groups at http://www.ccie.net > > _______________________________________________________________________ > Subscription information may be found at: > http://www.groupstudy.com/list/CCIELab.html

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