Hi community, I think I know what is wrong. I was mistaken thinking that I can do some sort of UDP probing as I can do with TCP checks, replacing a TCP SYN, SYNACK, ACK, FIN sequence to check out on a specific TCP port by a UDP datagram - some answer resp. UDP datagram - ICMP port unreachable test to check UDP responses.
What I mean is that I thought I could check any UDP port availability just like a TCP port availability. Fact is that an endpoint device needs to be configured to respond to a UDP echo that is normally sent on port 7 but can (using an IPSLA responder like a Cisco switch) be configured to be responsive to any port. That is, I need a device that is at least responsive to UDP echos on port 7, which, confusingly, is not usually so (which I thought it was). Thus, what can be checked is UDP responsitivity in general, not on a specific port. So you do not necessarily need a Cisco device as an endpoint, as long as you do not do any tests that specifically rely on any endpoint management intelligence. If it was, whole SPM would be rather useless, say, if I want to check my web server against http. My router in the same network might be delivering http traffic, but that says nothing about my web service. :-) Nevertheless, what I initially wanted to do was a protocol unspecific test on port 123 to check my NTP servers. Does anyone have a clue how to do this with out of the box features? Freundliche Grüße / Best regards Christian Fieres Mainova AG Planung und Betrieb Infrastruktur (M3-ON2) Service Operation Center Solmsstraße 38 60623 Frankfurt Telefon / Phone (069) 2 13-2 36 17 Mobil / Mobile (0170) 5 60 15 63 Telefax / Facsimile (069) 2 13-9 62 36 17 E-Mail [email protected] Mainova Aktiengesellschaft • Solmsstraße 38 • D-60623 Frankfurt am Main Vorsitzende des Aufsichtsrates: Oberbürgermeisterin Dr. h. c. Petra Roth • Vorstand: Dr. Constantin H. Alsheimer (Vorsitzender), Lothar Herbst, Dr. Marie-Luise Wolff, Joachim Zientek Sitz der Aktiengesellschaft: Frankfurt am Main • Amtsgericht Frankfurt HRB 7173 • USt-ID-Nr. DE 114184034 Mainova steht für besten Service, faire Verträge und top Preise für Ihre Energie - mit Auszeichnung! Mehr Infos unter: http://www.mainova.de/auszeichnung Danny Buthge <[email protected]> 11.05.2010 14:43 Bitte antworten an Danny Buthge <[email protected]> An "spectrum" <[email protected]> Kopie Thema Re: [spectrum] SPM UDP tests Roman Hochuli wrote: > No. You can configure a test for example for HTTP on a server. In this > case there is no router at the other end. You certainly need an > "SPM-capable" box to start the test from there... Yes, but Christian asks for UDP(e.g. echo¹ or jitter² operations) Tests! For HTTP, FTP, DHCP and DNS you're right. ¹ http://www.cisco.com/en/US/docs/ios/ipsla/configuration/guide/sla_udp_echo_ps6441_TSD_Products_Configuration_Guide_Chapter.html ² http://www.cisco.com/en/US/docs/ios/ipsla/configuration/guide/sla_udp_jitter_ps6441_TSD_Products_Configuration_Guide_Chapter.html Regards, Danny Buthge -- BCC Business Communication Company GmbH Heinrich-Nordhoff-Straße 69, 38440 Wolfsburg Tel. +49 5361 2777-361, Fax -398 Service-Nummer: 01801 222678* mailto:[email protected] http://www.bcc.de Registergericht: Braunschweig HRB 4460 Geschäftsführung: Dipl.-Ing. (FH) Josef Glöckl-Frohnholzer *Festnetzpreis 3,9 ct/min, Mobilfunkpreise maximal 42 ct/min --- To unsubscribe from spectrum, send email to [email protected] with the body: unsubscribe spectrum [email protected] --- To unsubscribe from spectrum, send email to [email protected] with the body: unsubscribe spectrum [email protected]
