Jean-Marc, ok. Thank you for explaining this!
regards, Martin On 5/15/15, Jurkiewicz Jean-Marc <jean-marc.jurkiew...@manor.ch> wrote: > Hi Martin, > > When you work with SNMP, the Index is the "key". > > Once you have the Index you can "snmpget" a lot of information regarding > this Index ( i.e. this Interface). > There is no way to "invert" the process ( find an Index when you have the > Description). > > http://jmjmon.eu/LaSupervisionDeReseau/SNMP_Mon-V010.pdf will provide you > more explanations ( in French for the moment) > > As you want a "Description" there is no other issue than reading all the > "Descriptions" and then get the Index referring to the Interface you are > looking for. > > Best regards > > JMJ > > -----Message d'origine----- > De : Martin T [mailto:m4rtn...@gmail.com] > Envoyé : mercredi, 13. mai 2015 10:40 > À : Jurkiewicz Jean-Marc > Cc : net-snmp-users@lists.sourceforge.net > Objet : Re: find SNMP ifIndex value if hostname and SNMP ifDescr are known > > Jean-Marc, > > sorry, my mistake. "$" in "grep -E "GigabitEthernet5/26$"" ensures that I > get the ifIndex of the physical interface. > snmpwalk/snmpget are run under Linux, SNMP agent runs on Cisco and Juniper > equipment and language of choice is bash/grep/sed/awk. > However, the example in my initial post works, but I was looking more like a > built-in feature in snmpwalk/snmpget, i.e. something which would avoid me > listing all the "ifDescr" -s first and then greping the right one and doing > all this parsing. > > > thanks, > Martin > > On 5/12/15, Jurkiewicz Jean-Marc <jean-marc.jurkiew...@manor.ch> wrote: >> Hi, >> >> "gsed -r "s/IF-MIB::ifDescr.([0-9]+) .*/\1/"" part is to make sure >> that I get the ifIndex of the physical interface and not the >> sub-interface like "GigabitEthernet5/26.123". >> >> Isn't that achieved by the "$" in grep -E "GigabitEthernet5/26$" >> >> Some further information would be welcome in order to be able to >> answer your question. >> Platform ? >> Language ? is PERL an option ? AWK seems the most appropriate when I >> see your example. >> >> Example : >> >> [jur466@nocu07 ~]$ snmpwalk -c MyCS MySwitch >> 1.3.6.1.2.1.2.2.1.2 >> .1.3.6.1.2.1.2.2.1.2.1 = STRING: GigabitEthernet0/0 >> .1.3.6.1.2.1.2.2.1.2.2 = STRING: Null0 >> .1.3.6.1.2.1.2.2.1.2.3 = STRING: GigabitEthernet1/0/1 >> .1.3.6.1.2.1.2.2.1.2.4 = STRING: GigabitEthernet1/0/2 >> .1.3.6.1.2.1.2.2.1.2.5 = STRING: GigabitEthernet1/0/3 >> .1.3.6.1.2.1.2.2.1.2.6 = STRING: GigabitEthernet1/0/4 Removed lines >> .1.3.6.1.2.1.2.2.1.2.29 = STRING: GigabitEthernet1/0/27 >> .1.3.6.1.2.1.2.2.1.2.30 = STRING: GigabitEthernet1/0/28 >> .1.3.6.1.2.1.2.2.1.2.31 = STRING: GigabitEthernet1/0/29 >> .1.3.6.1.2.1.2.2.1.2.32 = STRING: GigabitEthernet1/0/30 >> .1.3.6.1.2.1.2.2.1.2.33 = STRING: GigabitEthernet1/0/31 >> .1.3.6.1.2.1.2.2.1.2.34 = STRING: GigabitEthernet1/0/32 Removed lines >> >> >> Then >> >> [jur466@nocu07 ~]$ snmpwalk -c MyCS MySwitch 1.3.6.1.2.1.2.2.1.2 >> | >> grep GigabitEthernet1/0/3$ >> .1.3.6.1.2.1.2.2.1.2.5 = STRING: GigabitEthernet1/0/3 ==>> does not >> return >> GigabitEthernet1/0/3x >> [jur466@nocu07 ~]$ >> >> >> Split the line >> .1.3.6.1.2.1.2.2.1.2.5 = STRING: GigabitEthernet1/0/3 >> >> By "=" >> >> Removes spaces => .1.3.6.1.2.1.2.2.1.2.5 >> >> Spilt by "." (dot) >> >> The last element of the table is the index >> >> Regards >> JMJ >> >> -----Message d'origine----- >> De : Martin T [mailto:m4rtn...@gmail.com] Envoyé : mardi, 12. mai 2015 >> 17:45 À : net-snmp-users@lists.sourceforge.net >> Objet : find SNMP ifIndex value if hostname and SNMP ifDescr are known >> >> Hi, >> >> Is there a clever method to find out the SNMP ifIndex value if I know >> the hostname of the network device and ifDescr for this particular >> interface? At the moment I do it like this: >> >> snmpwalk -v 2c -c public router ifDescr | grep -E >> "GigabitEthernet5/26$" | gsed -r "s/IF-MIB::ifDescr.([0-9]+) .*/\1/" >> >> "router" is the hostname and "GigabitEthernet5/26" is the ifDescr. >> "gsed -r "s/IF-MIB::ifDescr.([0-9]+) .*/\1/"" part is to make sure >> that I get the ifIndex of the physical interface and not the >> sub-interface like "GigabitEthernet5/26.123". >> >> >> thanks, >> Martin >> >> ---------------------------------------------------------------------- >> -------- One dashboard for servers and applications across >> Physical-Virtual-Cloud Widest out-of-the-box monitoring support with >> 50+ applications Performance metrics, stats and reports that give you >> Actionable Insights Deep dive visibility with transaction tracing >> using APM Insight. >> http://ad.doubleclick.net/ddm/clk/290420510;117567292;y >> _______________________________________________ >> Net-snmp-users mailing list >> Net-snmp-users@lists.sourceforge.net >> Please see the following page to unsubscribe or change other options: >> https://lists.sourceforge.net/lists/listinfo/net-snmp-users >> > ------------------------------------------------------------------------------ One dashboard for servers and applications across Physical-Virtual-Cloud Widest out-of-the-box monitoring support with 50+ applications Performance metrics, stats and reports that give you Actionable Insights Deep dive visibility with transaction tracing using APM Insight. http://ad.doubleclick.net/ddm/clk/290420510;117567292;y _______________________________________________ Net-snmp-users mailing list Net-snmp-users@lists.sourceforge.net Please see the following page to unsubscribe or change other options: https://lists.sourceforge.net/lists/listinfo/net-snmp-users
