pysnmp generate Trap to target in non-default vrf
I am trying to use pysnmp sendNotification() to generate a trap on Debian 9. It works fine when my trap target is in default VRF but when the target is not in the default VRF it fails silently.
I found that the Perl library for SNMP trap generation works in the same scenario because it depends on a "trap2link" statement in /etc/snmp/snmpd.conf which specifies -n vrf. I thought the pysnmp client might also be able to take advantage of trap2link statements but it does not appear to be the case.
I have searched thoroughly for all references to pysnmp+vrf+trap2link and combinations thereof with no success. Any help would be appreciated.
net-snmp pysnmp snmp-trap
edited Nov 20 at 17:48
CalvT
2,15442639
asked Nov 20 at 16:26
Tom K
1
add a comment |
I am trying to use pysnmp sendNotification() to generate a trap on Debian 9. It works fine when my trap target is in default VRF but when the target is not in the default VRF it fails silently.
I found that the Perl library for SNMP trap generation works in the same scenario because it depends on a "trap2link" statement in /etc/snmp/snmpd.conf which specifies -n vrf. I thought the pysnmp client might also be able to take advantage of trap2link statements but it does not appear to be the case.
I have searched thoroughly for all references to pysnmp+vrf+trap2link and combinations thereof with no success. Any help would be appreciated.
net-snmp pysnmp snmp-trap
edited Nov 20 at 17:48
CalvT
2,15442639
asked Nov 20 at 16:26
Tom K
1
I am not sure what VRF is in the context of SNMP... I am guessing that may be-n vrfrefers to SNMP ContextName. Could you please publish the code which fails?
– Ilya Etingof
Nov 20 at 21:44
It is the Virtual Routing and Forwarding table in which the IP address of the SNMP target resolves. The code snippet is just a standard sendNotification() errorIndication, errorStatus, errorIndex, varBinds = next( sendNotification( Engine, CommunityData(target['community']), UdpTransportTarget((target['ip'], target['port'])), Context, 'trap',
– Tom K
Nov 22 at 22:21
Further to my previous comment, the SNMP target in the default routing table resolves without problems but for non-default routing tables, I could not find a way to specify this. I will try ContextName. Thanks.
– Tom K
Nov 22 at 22:24
add a comment |
I am trying to use pysnmp sendNotification() to generate a trap on Debian 9. It works fine when my trap target is in default VRF but when the target is not in the default VRF it fails silently.
I found that the Perl library for SNMP trap generation works in the same scenario because it depends on a "trap2link" statement in /etc/snmp/snmpd.conf which specifies -n vrf. I thought the pysnmp client might also be able to take advantage of trap2link statements but it does not appear to be the case.
I have searched thoroughly for all references to pysnmp+vrf+trap2link and combinations thereof with no success. Any help would be appreciated.
net-snmp pysnmp snmp-trap
edited Nov 20 at 17:48
CalvT
2,15442639
asked Nov 20 at 16:26
Tom K
1
I am trying to use pysnmp sendNotification() to generate a trap on Debian 9. It works fine when my trap target is in default VRF but when the target is not in the default VRF it fails silently.
I found that the Perl library for SNMP trap generation works in the same scenario because it depends on a "trap2link" statement in /etc/snmp/snmpd.conf which specifies -n vrf. I thought the pysnmp client might also be able to take advantage of trap2link statements but it does not appear to be the case.
I have searched thoroughly for all references to pysnmp+vrf+trap2link and combinations thereof with no success. Any help would be appreciated.
net-snmp pysnmp snmp-trap
net-snmp pysnmp snmp-trap
edited Nov 20 at 17:48
CalvT
2,15442639
asked Nov 20 at 16:26
Tom K
1
edited Nov 20 at 17:48
CalvT
2,15442639
asked Nov 20 at 16:26
Tom K
1
edited Nov 20 at 17:48
CalvT
2,15442639
edited Nov 20 at 17:48
CalvT
2,15442639
edited Nov 20 at 17:48
CalvT
2,15442639
2,15442639
asked Nov 20 at 16:26
Tom K
1
asked Nov 20 at 16:26
Tom K
1
asked Nov 20 at 16:26
Tom K
1
1
I am not sure what VRF is in the context of SNMP... I am guessing that may be-n vrfrefers to SNMP ContextName. Could you please publish the code which fails?
– Ilya Etingof
Nov 20 at 21:44
It is the Virtual Routing and Forwarding table in which the IP address of the SNMP target resolves. The code snippet is just a standard sendNotification() errorIndication, errorStatus, errorIndex, varBinds = next( sendNotification( Engine, CommunityData(target['community']), UdpTransportTarget((target['ip'], target['port'])), Context, 'trap',
– Tom K
Nov 22 at 22:21
Further to my previous comment, the SNMP target in the default routing table resolves without problems but for non-default routing tables, I could not find a way to specify this. I will try ContextName. Thanks.
– Tom K
Nov 22 at 22:24
add a comment |
I am not sure what VRF is in the context of SNMP... I am guessing that may be-n vrfrefers to SNMP ContextName. Could you please publish the code which fails?
– Ilya Etingof
Nov 20 at 21:44
It is the Virtual Routing and Forwarding table in which the IP address of the SNMP target resolves. The code snippet is just a standard sendNotification() errorIndication, errorStatus, errorIndex, varBinds = next( sendNotification( Engine, CommunityData(target['community']), UdpTransportTarget((target['ip'], target['port'])), Context, 'trap',
– Tom K
Nov 22 at 22:21
Further to my previous comment, the SNMP target in the default routing table resolves without problems but for non-default routing tables, I could not find a way to specify this. I will try ContextName. Thanks.
– Tom K
Nov 22 at 22:24
I am not sure what VRF is in the context of SNMP... I am guessing that may be
-n vrf refers to SNMP ContextName. Could you please publish the code which fails?– Ilya Etingof
Nov 20 at 21:44
I am not sure what VRF is in the context of SNMP... I am guessing that may be
-n vrf refers to SNMP ContextName. Could you please publish the code which fails?– Ilya Etingof
Nov 20 at 21:44
It is the Virtual Routing and Forwarding table in which the IP address of the SNMP target resolves. The code snippet is just a standard sendNotification() errorIndication, errorStatus, errorIndex, varBinds = next( sendNotification( Engine, CommunityData(target['community']), UdpTransportTarget((target['ip'], target['port'])), Context, 'trap',
– Tom K
Nov 22 at 22:21
It is the Virtual Routing and Forwarding table in which the IP address of the SNMP target resolves. The code snippet is just a standard sendNotification() errorIndication, errorStatus, errorIndex, varBinds = next( sendNotification( Engine, CommunityData(target['community']), UdpTransportTarget((target['ip'], target['port'])), Context, 'trap',
– Tom K
Nov 22 at 22:21
Further to my previous comment, the SNMP target in the default routing table resolves without problems but for non-default routing tables, I could not find a way to specify this. I will try ContextName. Thanks.
– Tom K
Nov 22 at 22:24
Further to my previous comment, the SNMP target in the default routing table resolves without problems but for non-default routing tables, I could not find a way to specify this. I will try ContextName. Thanks.
– Tom K
Nov 22 at 22:24
add a comment |
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I am not sure what VRF is in the context of SNMP... I am guessing that may be
-n vrfrefers to SNMP ContextName. Could you please publish the code which fails?– Ilya Etingof
Nov 20 at 21:44
It is the Virtual Routing and Forwarding table in which the IP address of the SNMP target resolves. The code snippet is just a standard sendNotification() errorIndication, errorStatus, errorIndex, varBinds = next( sendNotification( Engine, CommunityData(target['community']), UdpTransportTarget((target['ip'], target['port'])), Context, 'trap',
– Tom K
Nov 22 at 22:21
Further to my previous comment, the SNMP target in the default routing table resolves without problems but for non-default routing tables, I could not find a way to specify this. I will try ContextName. Thanks.
– Tom K
Nov 22 at 22:24