From: Koen Zeilstra (koen@koenzeilstra.com)
Date: Fri Jun 16 2006 - 08:12:40 ART
Why is this RTR command sending UDP packets to port 1967 instead of the
configured 65300?
rtr 1
type udpEcho dest-ipaddr 4.4.3.3 dest-port 65300
request-data-size 500
timeout 50
frequency 1
rtr schedule 1 start-time now
*Mar 1 03:23:56.471: IP: tableid=0, s=4.4.245.5 (local), d=4.4.3.3
(Serial1/0.245), routed via FIB
*Mar 1 03:23:56.471: IP: s=4.4.245.5 (local), d=4.4.3.3 (Serial1/0.245),
len 80, sending
*Mar 1 03:23:56.471: UDP src=50915, dst=1967
*Mar 1 03:23:56.483: IP: tableid=0, s=4.4.36.3 (Serial1/0.245),
d=4.4.245.5 (Serial1/0.245), routed via RIB
*Mar 1 03:23:56.483: IP: s=4.4.36.3 (Serial1/0.245), d=4.4.245.5
(Serial1/0.245), len 56, rcvd 3
*Mar 1 03:23:56.483: ICMP type=3, code=3
-----------------------
Fourth Law of Revision:
It is usually impractical to worry beforehand about
interferences -- if you have none, someone will make one for you.
On Thu, 15 Jun 2006, Brian McGahan wrote:
| Check lab 12 task 6.2.
|
|
| HTH,
|
| Brian McGahan, CCIE #8593
| bmcgahan@internetworkexpert.com
|
| Internetwork Expert, Inc.
| http://www.InternetworkExpert.com
| Toll Free: 877-224-8987 x 705
| Outside US: 775-826-4344 x 705
| 24/7 Support: http://forum.internetworkexpert.com
| Live Chat: http://www.internetworkexpert.com/chat/
|
|
| > -----Original Message-----
| > From: Pierre-Alex [mailto:paguanel@hotmail.com]
| > Sent: Thursday, June 15, 2006 4:10 PM
| > To: Brian McGahan; Koen Zeilstra
| > Cc: ccielab@groupstudy.com
| > Subject: Re: Generating UDP broadcast from router using RTR possible?
| >
| > Hi Brian,
| >
| > I do have IEWB-RS version 3.
| >
| > In which lab is the checking technique covered?
| >
| > Thanks
| >
| > Pierre-Alex
| >
| > ----- Original Message -----
| > From: "Brian McGahan" <bmcgahan@internetworkexpert.com>
| > To: "Pierre-Alex" <paguanel@hotmail.com>; "Koen Zeilstra"
| > <koen@koenzeilstra.com>
| > Cc: <ccielab@groupstudy.com>
| > Sent: Thursday, June 15, 2006 10:50 PM
| > Subject: RE: Generating UDP broadcast from router using RTR possible?
| >
| >
| > The problem you're seeing is most likely related to directed-broadcast
| > being disabled on the interface. Issue the "ip directed-broadcast"
| > interface level command on E0/0 and see if that has an effect. Also
| you
| > can change the destination to 255.255.255.255 in the RTR if you want
| an
| > all subnet broadcast. If you have IEWB-RS this is covered in the
| volume
| > 1 solutions guide under how to verify that the ip multicast-helper map
| > is working.
| >
| >
| > HTH,
| >
| > Brian McGahan, CCIE #8593
| > bmcgahan@internetworkexpert.com
| >
| > Internetwork Expert, Inc.
| > http://www.InternetworkExpert.com
| > Toll Free: 877-224-8987 x 705
| > Outside US: 775-826-4344 x 705
| > 24/7 Support: http://forum.internetworkexpert.com
| > Live Chat: http://www.internetworkexpert.com/chat/
| >
| >
| > > -----Original Message-----
| > > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
| > Of
| > > Pierre-Alex
| > > Sent: Thursday, June 15, 2006 5:09 AM
| > > To: Koen Zeilstra
| > > Cc: ccielab@groupstudy.com
| > > Subject: Re: Generating UDP broadcast from router using RTR
| possible?
| > >
| > > Sorry the message went before it was ready ...
| > >
| > > Here it is complete:
| > >
| > > --------------
| > >
| > > Koen,
| > >
| > > Just so you know, I was not able to test multicast helper-map using
| > DNS
| > > broadcast as a source
| > > of broadcast traffic. Using a router running RIP in version 1 did
| > not
| > > cut
| > > it either.
| > >
| > > Router generating DNS / RIPv1
| > > (source)--F0/0--R2----multicast----r3-e0/0--R4(Receiver)
| > >
| > > I had to use a server with a traffic generator as below:
| > > Server(source)--F0/0--R2----multicast----r3-e0/0--R4(Receiver)
| > >
| > > My problem remains: on the exam I will not have a way to test that
| the
| > > multicast-helper map is working as expected .
| > >
| > > Pierre-Alex
| > >
| > >
| > >
| > > ----- Original Message -----
| > > From: "Pierre-Alex" <paguanel@hotmail.com>
| > > To: "Koen Zeilstra" <koen@koenzeilstra.com>
| > > Cc: <ccielab@groupstudy.com>
| > > Sent: Thursday, June 15, 2006 12:03 PM
| > > Subject: Re: Generating UDP broadcast from router using RTR
| possible?
| > >
| > >
| > > > Koen Just so you know, I was not able to test multicast helper-map
| > using
| > > > DNS broadcast as a source
| > > > of broadcast traffic. Using a router running RIP in version 1
| > > >
| > > >
| > > >
| > > > ----- Original Message -----
| > > > From: "Koen Zeilstra" <koen@koenzeilstra.com>
| > > > To: "Pierre-Alex" <paguanel@hotmail.com>
| > > > Cc: <ccielab@groupstudy.com>
| > > > Sent: Thursday, June 15, 2006 10:31 AM
| > > > Subject: Re: Generating UDP broadcast from router using RTR
| > possible?
| > > >
| > > >
| > > >> Piere-Alex,
| > > >>
| > > >> With help of a blind dns lookup you are able to do at lease UDP
| > > broadcast
| > > >> to port 53.
| > > >>
| > > >> Router(conf)# ip domain.lookup
| > > >> Router# cisco.com
| > > >> Translating "cisco.com"...domain server (255.255.255.255)
| > > >>
| > > >>
| > > >> kind regards,
| > > >>
| > > >> Koen Zeilstra
| > > >>
| > > >> -----------------------
| > > >> Forgetfulness, n.:
| > > >> A gift of God bestowed upon debtors in compensation for their
| > > >> destitution of conscience.
| > > >>
| > > >> On Thu, 15 Jun 2006, Pierre-Alex wrote:
| > > >>
| > > >> | Is it possible to trick the router into sending UDP broadcasts
| > via
| > > rtr?
| > > >> |
| > > >> | I am getting "encapsulation failure" when running the
| following:
| > > >> |
| > > >> | rtr 2
| > > >> | type udpEcho dest-ipaddr 10.1.2.255 dest-port 65300
| > > >> | request-data-size 1500
| > > >> | timeout 50
| > > >> | frequency 1
| > > >> | rtr schedule 2 life forever start-time now
| > > >> |
| > > >> |
| > > >> | It will greatly help me in testing various things.
| > > >> |
| > > >> | Thanks
| > > >> |
| > > >> | Also, I have noticed that my destination port was not respected
| > (but
| > > >> this is a
| > > >> | minor thing).
| > > >> |
| > > >> |
| > > >> | *Mar 1 01:24:07.393: IP: s=10.1.2.1 (local), d=10.1.2.255
| > > >> (Ethernet0/0), len
| > > >> | 80, encapsulation
| > > >> | failed
| > > >> | *Mar 1 01:24:07.393: UDP src=50659, dst=1967
| > > >> | r1#
| > > >> |
| > > >> | Pierre-Alex
| > > >> |
| > > >> |
| > >
| >
| _______________________________________________________________________
| > > >> | Subscription information may be found at:
| > > >> | http://www.groupstudy.com/list/CCIELab.html
| > > >> |
| > >
| > >
| >
| _______________________________________________________________________
| > > Subscription information may be found at:
| > > http://www.groupstudy.com/list/CCIELab.html
|
| _______________________________________________________________________
| Subscription information may be found at:
| http://www.groupstudy.com/list/CCIELab.html
|
This archive was generated by hypermail 2.1.4 : Sat Jul 01 2006 - 07:57:33 ART