most of Command Generator examples re-pointed to a live SNMP Agent

at demo.snmplabs.com to ease experimentation and adoption

17 files changed, 56 insertions, 50 deletions

diff --git a/examples/hlapi/asyncore/manager/cmdgen/multiple-concurrent-queries.py b/examples/hlapi/asyncore/manager/cmdgen/multiple-concurrent-queries.py
index 85dad1b2..7f68d024 100644
--- a/examples/hlapi/asyncore/manager/cmdgen/multiple-concurrent-queries.py
+++ b/examples/hlapi/asyncore/manager/cmdgen/multiple-concurrent-queries.py
@@ -8,7 +8,7 @@
 #   with SNMPv3, user 'usr-md5-des', MD5 auth and DES privacy
 # * over IPv4/UDP and 
 #   over IPv6/UDP
-# * to an Agent at localhost:161 and
+# * to an Agent at demo.snmplabs.com:161 and
 #   to an Agent at [::1]:161
 # * for instances of SNMPv2-MIB::sysDescr.0 and
 #   SNMPv2-MIB::sysLocation.0 MIB objects
@@ -20,20 +20,26 @@ from pysnmp.entity.rfc3413.oneliner import cmdgen
 targets = (
     # 1-st target (SNMPv1 over IPv4/UDP)
     ( cmdgen.CommunityData('public', mpModel=0),
-      cmdgen.UdpTransportTarget(('localhost', 161)),
+      cmdgen.UdpTransportTarget(('demo.snmplabs.com', 161)),
       ( cmdgen.MibVariable('SNMPv2-MIB', 'sysDescr', 0),
         cmdgen.MibVariable('SNMPv2-MIB', 'sysLocation', 0) ) ),
     # 2-nd target (SNMPv2c over IPv4/UDP)
     ( cmdgen.CommunityData('public'),
-      cmdgen.UdpTransportTarget(('localhost', 161)),
+      cmdgen.UdpTransportTarget(('demo.snmplabs.com', 161)),
       ( cmdgen.MibVariable('SNMPv2-MIB', 'sysDescr', 0),
         cmdgen.MibVariable('SNMPv2-MIB', 'sysLocation', 0) ) ),
-    # 3-nd target (SNMPv3 over IPv4/UDP)
-    ( cmdgen.UsmUserData('usr-md5-des', 'authkey1', 'privkey1'),
+    # 3-nd target (SNMPv2c over IPv4/UDP) - same community and 
+    # different transport address.
+    ( cmdgen.CommunityData('public'),
       cmdgen.UdpTransportTarget(('localhost', 161)),
+      ( cmdgen.MibVariable('SNMPv2-MIB', 'sysContact', 0),
+        cmdgen.MibVariable('SNMPv2-MIB', 'sysName', 0) ) ),
+    # 4-nd target (SNMPv3 over IPv4/UDP)
+    ( cmdgen.UsmUserData('usr-md5-des', 'authkey1', 'privkey1'),
+      cmdgen.UdpTransportTarget(('demo.snmplabs.com', 161)),
       ( cmdgen.MibVariable('SNMPv2-MIB', 'sysDescr', 0),
         cmdgen.MibVariable('SNMPv2-MIB', 'sysLocation', 0) ) ),
-    # 4-th target (SNMPv3 over IPv6/UDP)
+    # 5-th target (SNMPv3 over IPv6/UDP)
     ( cmdgen.UsmUserData('usr-md5-none', 'authkey1'),
       cmdgen.Udp6TransportTarget(('::1', 161)),
       ( cmdgen.MibVariable('SNMPv2-MIB', 'sysDescr', 0),
diff --git a/examples/hlapi/asyncore/manager/cmdgen/pull-mibs-from-multiple-agents-at-once.py b/examples/hlapi/asyncore/manager/cmdgen/pull-mibs-from-multiple-agents-at-once.py
index 761bdaa5..76b860fd 100644
--- a/examples/hlapi/asyncore/manager/cmdgen/pull-mibs-from-multiple-agents-at-once.py
+++ b/examples/hlapi/asyncore/manager/cmdgen/pull-mibs-from-multiple-agents-at-once.py
@@ -8,7 +8,7 @@
 #   with SNMPv3, user 'usr-md5-des', MD5 auth and DES privacy
 # * over IPv4/UDP and 
 #   over IPv6/UDP
-# * to an Agent at localhost:161 and
+# * to an Agent at demo.snmplabs.com:161 and
 #   to an Agent at [::1]:161
 # * for multiple MIB subtrees and tables
 #
@@ -19,15 +19,15 @@ from pysnmp.entity.rfc3413.oneliner import cmdgen
 targets = (
     # 1-st target (SNMPv1 over IPv4/UDP)
     ( cmdgen.CommunityData('public', mpModel=0),
-      cmdgen.UdpTransportTarget(('localhost', 161)),
+      cmdgen.UdpTransportTarget(('demo.snmplabs.com', 161)),
       ( '1.3.6.1.2.1', '1.3.6.1.3.1') ),
     # 2-nd target (SNMPv2c over IPv4/UDP)
     ( cmdgen.CommunityData('public'),
-      cmdgen.UdpTransportTarget(('localhost', 161)),
+      cmdgen.UdpTransportTarget(('demo.snmplabs.com', 161)),
       ( '1.3.6.1.4.1', ) ),
     # 3-nd target (SNMPv3 over IPv4/UDP)
     ( cmdgen.UsmUserData('usr-md5-des', 'authkey1', 'privkey1'),
-      cmdgen.UdpTransportTarget(('localhost', 161)),
+      cmdgen.UdpTransportTarget(('demo.snmplabs.com', 161)),
       ( cmdgen.MibVariable('SNMPv2-MIB', 'system'), ) ),
     # 4-th target (SNMPv3 over IPv6/UDP)
     ( cmdgen.UsmUserData('usr-md5-none', 'authkey1'),
diff --git a/examples/hlapi/asyncore/sync/manager/cmdgen/coerce-set-value-to-mib-spec.py b/examples/hlapi/asyncore/sync/manager/cmdgen/coerce-set-value-to-mib-spec.py
index 13aa413b..d58ad9ca 100644
--- a/examples/hlapi/asyncore/sync/manager/cmdgen/coerce-set-value-to-mib-spec.py
+++ b/examples/hlapi/asyncore/sync/manager/cmdgen/coerce-set-value-to-mib-spec.py
@@ -5,7 +5,7 @@
 #
 # * with SNMPv2c, community 'public'
 # * over IPv4/UDP
-# * to an Agent at localhost:161
+# * to an Agent at demo.snmplabs.com:161
 # * setting SNMPv2-MIB::sysName.0 to new value (type taken from MIB)
 #
 from pysnmp.entity.rfc3413.oneliner import cmdgen
@@ -14,8 +14,8 @@ cmdGen = cmdgen.CommandGenerator()
 
 errorIndication, errorStatus, errorIndex, varBinds = cmdGen.setCmd(
     cmdgen.CommunityData('public'),
-    cmdgen.UdpTransportTarget(('localhost', 161)),
-    (cmdgen.MibVariable('SNMPv2-MIB', 'sysName', 0), 'new system name')
+    cmdgen.UdpTransportTarget(('demo.snmplabs.com', 161)),
+    (cmdgen.MibVariable('SNMPv2-MIB', 'sysORDescr', 1), 'new system name')
 )
 
 # Check for errors and print out results
diff --git a/examples/hlapi/asyncore/sync/manager/cmdgen/custom-contextengineid-and-contextname.py b/examples/hlapi/asyncore/sync/manager/cmdgen/custom-contextengineid-and-contextname.py
index 12aea8a3..2aa6407f 100644
--- a/examples/hlapi/asyncore/sync/manager/cmdgen/custom-contextengineid-and-contextname.py
+++ b/examples/hlapi/asyncore/sync/manager/cmdgen/custom-contextengineid-and-contextname.py
@@ -5,7 +5,7 @@
 #
 # * with SNMPv3 with user 'usr-md5-none', MD5 auth and no privacy protocols
 # * over IPv4/UDP
-# * to an Agent at localhost:161
+# * to an Agent at demo.snmplabs.com:161
 # * addressing particular set of Managed Objects at remote SNMP Engine by:
 #   * contextEngineId 0x8000000001020304 and
 #   * contextName 'my-context'
@@ -18,8 +18,8 @@ cmdGen = cmdgen.CommandGenerator()
 
 errorIndication, errorStatus, errorIndex, varBinds = cmdGen.setCmd(
     cmdgen.UsmUserData('usr-md5-none', 'authkey1'),
-    cmdgen.UdpTransportTarget(('localhost', 161)),
-    (cmdgen.MibVariable('SNMPv2-MIB', 'sysName', 0), 'new system name'),
+    cmdgen.UdpTransportTarget(('demo.snmplabs.com', 161)),
+    (cmdgen.MibVariable('SNMPv2-MIB', 'sysORDescr', 1), 'new system name'),
     contextEngineId=rfc1902.OctetString(hexValue='8000000001020304'),
     contextName='my-context'
 )
diff --git a/examples/hlapi/asyncore/sync/manager/cmdgen/custom-contextengineid.py b/examples/hlapi/asyncore/sync/manager/cmdgen/custom-contextengineid.py
index 20a0c094..f0c949e2 100644
--- a/examples/hlapi/asyncore/sync/manager/cmdgen/custom-contextengineid.py
+++ b/examples/hlapi/asyncore/sync/manager/cmdgen/custom-contextengineid.py
@@ -6,7 +6,7 @@
 # * with SNMPv3 with user 'usr-md5-des', MD5 auth and DES privacy protocols
 # * use remote SNMP Engine ID 0x8000000004030201 (USM autodiscovery will run)
 # * over IPv4/UDP
-# * to an Agent at localhost:161
+# * to an Agent at demo.snmplabs.com:161
 # * setting SNMPv2-MIB::sysName.0 to new value (type taken from MIB)
 #
 from pysnmp.entity.rfc3413.oneliner import cmdgen
@@ -19,8 +19,8 @@ errorIndication, errorStatus, errorIndex, varBinds = cmdGen.setCmd(
         'usr-md5-des', 'authkey1', 'privkey1',
         contextEngineId=rfc1902.OctetString(hexValue='8000000004030201')
     ),
-    cmdgen.UdpTransportTarget(('localhost', 161)),
-    (cmdgen.MibVariable('SNMPv2-MIB', 'sysName', 0), 'new system name'),
+    cmdgen.UdpTransportTarget(('demo.snmplabs.com', 161)),
+    (cmdgen.MibVariable('SNMPv2-MIB', 'sysORDescr', 1), 'new system name'),
 )
 
 # Check for errors and print out results
diff --git a/examples/hlapi/asyncore/sync/manager/cmdgen/custom-pysnmp-mibs-search-path.py b/examples/hlapi/asyncore/sync/manager/cmdgen/custom-pysnmp-mibs-search-path.py
index 3672f5db..f85cf6b2 100644
--- a/examples/hlapi/asyncore/sync/manager/cmdgen/custom-pysnmp-mibs-search-path.py
+++ b/examples/hlapi/asyncore/sync/manager/cmdgen/custom-pysnmp-mibs-search-path.py
@@ -5,7 +5,7 @@
 #
 # * with SNMPv3, user 'usr-none-none', no authentication, no privacy
 # * over IPv4/UDP
-# * to an Agent at localhost:161
+# * to an Agent at demo.snmplabs.com:161
 # * for all OIDs past TCP-MIB::tcpConnTable
 # * TCP-MIB will be searched by a user-specified path
 # * run till end-of-mib condition is reported by Agent OR maxRows == 20
@@ -19,7 +19,7 @@ cmdGen = cmdgen.CommandGenerator()
 
 errorIndication, errorStatus, errorIndex, varBindTable = cmdGen.bulkCmd(
     cmdgen.UsmUserData('usr-none-none'),
-    cmdgen.UdpTransportTarget(('localhost', 161)),
+    cmdgen.UdpTransportTarget(('demo.snmplabs.com', 161)),
     0, 50,
     cmdgen.MibVariable('TCP-MIB', 'tcpConnTable').addMibSource('/tmp/mymibs'),
     lexicographicMode=True, maxRows=100, ignoreNonIncreasingOid=True
diff --git a/examples/hlapi/asyncore/sync/manager/cmdgen/get-table-object-by-index.py b/examples/hlapi/asyncore/sync/manager/cmdgen/get-table-object-by-index.py
index 065509d3..35fe0df4 100644
--- a/examples/hlapi/asyncore/sync/manager/cmdgen/get-table-object-by-index.py
+++ b/examples/hlapi/asyncore/sync/manager/cmdgen/get-table-object-by-index.py
@@ -5,8 +5,8 @@
 #
 # * with SNMPv3, user 'usr-none-none', no authentication, no privacy
 # * over IPv4/UDP
-# * to an Agent at localhost:161
-# * for IP-MIB::ipAdEntAddr.127.0.0.1 MIB object
+# * to an Agent at demo.snmplabs.com:161
+# * for IF-MIB::ifInOctets.1 MIB object
 # * perform response OIDs and values resolution at MIB
 #
 from pysnmp.entity.rfc3413.oneliner import cmdgen
@@ -15,8 +15,8 @@ cmdGen = cmdgen.CommandGenerator()
 
 errorIndication, errorStatus, errorIndex, varBinds = cmdGen.getCmd(
     cmdgen.UsmUserData('usr-none-none'),
-    cmdgen.UdpTransportTarget(('localhost', 161)),
-    cmdgen.MibVariable('IP-MIB', 'ipAdEntAddr', '127.0.0.1'),
+    cmdgen.UdpTransportTarget(('demo.snmplabs.com', 161)),
+    cmdgen.MibVariable('IF-MIB', 'ifInOctets', '1'),
     lookupNames=True, lookupValues=True
 )
 
diff --git a/examples/hlapi/asyncore/sync/manager/cmdgen/get-table-object-by-multiple-indices.py b/examples/hlapi/asyncore/sync/manager/cmdgen/get-table-object-by-multiple-indices.py
index df7dafcd..74f31b0e 100644
--- a/examples/hlapi/asyncore/sync/manager/cmdgen/get-table-object-by-multiple-indices.py
+++ b/examples/hlapi/asyncore/sync/manager/cmdgen/get-table-object-by-multiple-indices.py
@@ -5,7 +5,7 @@
 #
 # * with SNMPv3, user 'usr-sha-aes128', SHA auth, AES128 privacy
 # * over IPv4/UDP
-# * to an Agent at localhost:161
+# * to an Agent at demo.snmplabs.com:161
 # * for TCP-MIB::tcpConnLocalAddress."0.0.0.0".22."0.0.0.0".0 MIB object
 #
 from pysnmp.entity.rfc3413.oneliner import cmdgen
@@ -16,7 +16,7 @@ errorIndication, errorStatus, errorIndex, varBinds = cmdGen.getCmd(
     cmdgen.UsmUserData('usr-sha-aes128', 'authkey1', 'privkey1',
                        authProtocol=cmdgen.usmHMACSHAAuthProtocol,
                        privProtocol=cmdgen.usmAesCfb128Protocol ),
-    cmdgen.UdpTransportTarget(('localhost', 161)),
+    cmdgen.UdpTransportTarget(('demo.snmplabs.com', 161)),
     cmdgen.MibVariable('TCP-MIB', 'tcpConnLocalAddress', '0.0.0.0', 22, '0.0.0.0', 0)
 )
 
diff --git a/examples/hlapi/asyncore/sync/manager/cmdgen/getnext-limit-number-of-variables.py b/examples/hlapi/asyncore/sync/manager/cmdgen/getnext-limit-number-of-variables.py
index a9d4f19f..2e9c9f43 100644
--- a/examples/hlapi/asyncore/sync/manager/cmdgen/getnext-limit-number-of-variables.py
+++ b/examples/hlapi/asyncore/sync/manager/cmdgen/getnext-limit-number-of-variables.py
@@ -5,7 +5,7 @@
 #
 # * with SNMPv3, user 'usr-sha-aes128', SHA auth, AES128 privacy
 # * over Local Domain Sockets
-# * to an Agent at localhost:161
+# * to an Agent at demo.snmplabs.com:161
 # * for all OIDs past IF-MIB (load up all MIBs in search path)
 # * run till end-of-mib condition is reported by Agent OR maxRows == 100
 # * ignoring non-increasing OIDs whenever reported by Agent
@@ -20,7 +20,7 @@ errorIndication, errorStatus, errorIndex, varBindTable = cmdGen.nextCmd(
     cmdgen.UsmUserData('usr-sha-aes128', 'authkey1', 'privkey1',
                        authProtocol=cmdgen.usmHMACSHAAuthProtocol,
                        privProtocol=cmdgen.usmAesCfb128Protocol),
-    cmdgen.UdpTransportTarget(('localhost', 161)),
+    cmdgen.UdpTransportTarget(('demo.snmplabs.com', 161)),
     cmdgen.MibVariable('IF-MIB', '').loadMibs(),
     lexicographicMode=True, maxRows=100,
     ignoreNonIncreasingOid=True
diff --git a/examples/hlapi/asyncore/sync/manager/cmdgen/getnext-multiple-oids-to-eom.py b/examples/hlapi/asyncore/sync/manager/cmdgen/getnext-multiple-oids-to-eom.py
index 40f0f144..74937a2a 100644
--- a/examples/hlapi/asyncore/sync/manager/cmdgen/getnext-multiple-oids-to-eom.py
+++ b/examples/hlapi/asyncore/sync/manager/cmdgen/getnext-multiple-oids-to-eom.py
@@ -5,7 +5,7 @@
 #
 # * with SNMPv2c, community 'public'
 # * over IPv4/UDP
-# * to an Agent at localhost:161
+# * to an Agent at demo.snmplabs.com:161
 # * for two OIDs in string form
 # * stop when response OIDs leave the scopes of initial OIDs
 #
@@ -15,7 +15,7 @@ cmdGen = cmdgen.CommandGenerator()
 
 errorIndication, errorStatus, errorIndex, varBindTable = cmdGen.nextCmd(
     cmdgen.CommunityData('public'),
-    cmdgen.UdpTransportTarget(('localhost', 161)),
+    cmdgen.UdpTransportTarget(('demo.snmplabs.com', 161)),
     '1.3.6.1.2.1.2.2.1.2',
     '1.3.6.1.2.1.2.2.1.3',
 )
diff --git a/examples/hlapi/asyncore/sync/manager/cmdgen/pull-whole-mib.py b/examples/hlapi/asyncore/sync/manager/cmdgen/pull-whole-mib.py
index e3e566b9..25352de8 100644
--- a/examples/hlapi/asyncore/sync/manager/cmdgen/pull-whole-mib.py
+++ b/examples/hlapi/asyncore/sync/manager/cmdgen/pull-whole-mib.py
@@ -5,7 +5,7 @@
 #
 # * with SNMPv3, user 'usr-md5-none', MD5 authentication, no privacy
 # * over IPv4/UDP
-# * to an Agent at localhost:161
+# * to an Agent at demo.snmplabs.com:161
 # * for all OIDs in IF-MIB
 # * stop when response OIDs leave the scopes of the table
 # * perform response values resolution at MIB
@@ -18,7 +18,7 @@ cmdGen = cmdgen.CommandGenerator()
 
 errorIndication, errorStatus, errorIndex, varBindTable = cmdGen.nextCmd(
     cmdgen.UsmUserData('usr-md5-none', 'authkey1'),
-    cmdgen.UdpTransportTarget(('localhost', 161)),
+    cmdgen.UdpTransportTarget(('demo.snmplabs.com', 161)),
     cmdgen.MibVariable('IF-MIB', ''),
     lookupValues=True
 )
diff --git a/examples/hlapi/asyncore/sync/manager/cmdgen/pull-whole-snmp-table.py b/examples/hlapi/asyncore/sync/manager/cmdgen/pull-whole-snmp-table.py
index 9977164c..2a698959 100644
--- a/examples/hlapi/asyncore/sync/manager/cmdgen/pull-whole-snmp-table.py
+++ b/examples/hlapi/asyncore/sync/manager/cmdgen/pull-whole-snmp-table.py
@@ -5,7 +5,7 @@
 #
 # * with SNMPv1, community 'public'
 # * over IPv4/UDP
-# * to an Agent at localhost:161
+# * to an Agent at demo.snmplabs.com:161
 # * for some columns of the IF-MIB::ifEntry table
 # * stop when response OIDs leave the scopes of initial OIDs
 #
@@ -17,7 +17,7 @@ cmdGen = cmdgen.CommandGenerator()
 
 errorIndication, errorStatus, errorIndex, varBindTable = cmdGen.nextCmd(
     cmdgen.CommunityData('public', mpModel=0),
-    cmdgen.UdpTransportTarget(('localhost', 161)),
+    cmdgen.UdpTransportTarget(('demo.snmplabs.com', 161)),
     cmdgen.MibVariable('IF-MIB', 'ifDescr'),
     cmdgen.MibVariable('IF-MIB', 'ifType'),
     cmdgen.MibVariable('IF-MIB', 'ifMtu'),
diff --git a/examples/hlapi/asyncore/sync/manager/cmdgen/set-multiple-scalar-values.py b/examples/hlapi/asyncore/sync/manager/cmdgen/set-multiple-scalar-values.py
index 1b3e1c38..b225b71f 100644
--- a/examples/hlapi/asyncore/sync/manager/cmdgen/set-multiple-scalar-values.py
+++ b/examples/hlapi/asyncore/sync/manager/cmdgen/set-multiple-scalar-values.py
@@ -5,7 +5,7 @@
 #
 # * with SNMPv1, community 'public'
 # * over IPv4/UDP
-# * to an Agent at localhost:161
+# * to an Agent at demo.snmplabs.com:161
 # * setting two OIDs to new values (types explicitly specified)
 #
 from pysnmp.entity.rfc3413.oneliner import cmdgen
@@ -15,10 +15,10 @@ cmdGen = cmdgen.CommandGenerator()
 
 errorIndication, errorStatus, errorIndex, varBinds = cmdGen.setCmd(
     cmdgen.CommunityData('public', mpModel=0),
-    cmdgen.UdpTransportTarget(('localhost', 161)),
-    ('1.3.6.1.2.1.1.2.0', rfc1902.ObjectName('1.3.6.1.4.1.20408.1.1')),
-    ('1.3.6.1.2.1.1.2.0', '1.3.6.1.4.1.20408.1.1'),
-    ('1.3.6.1.2.1.1.5.0', rfc1902.OctetString('new system name'))
+    cmdgen.UdpTransportTarget(('demo.snmplabs.com', 161)),
+    ('1.3.6.1.2.1.1.9.1.2.1', rfc1902.ObjectName('1.3.6.1.4.1.20408.1.1')),
+    ('1.3.6.1.2.1.1.9.1.2.1', '1.3.6.1.4.1.20408.1.1'),
+    ('1.3.6.1.2.1.1.9.1.3.1', rfc1902.OctetString('new system name'))
 )
 
 # Check for errors and print out results
diff --git a/examples/hlapi/asyncore/sync/manager/cmdgen/usm-md5-none.py b/examples/hlapi/asyncore/sync/manager/cmdgen/usm-md5-none.py
index 35a6d23c..5392c0c9 100644
--- a/examples/hlapi/asyncore/sync/manager/cmdgen/usm-md5-none.py
+++ b/examples/hlapi/asyncore/sync/manager/cmdgen/usm-md5-none.py
@@ -5,8 +5,8 @@
 #
 # * with SNMPv3, user 'usr-md5-none', MD5 authentication, no privacy
 # * over IPv4/UDP
-# * to an Agent at localhost:161
-# * for IP-MIB::ipAdEntAddr.127.0.0.1 MIB object
+# * to an Agent at demo.snmplabs.com:161
+# * for IF-MIB::ifInOctets.1 MIB object
 #
 from pysnmp.entity.rfc3413.oneliner import cmdgen
 
@@ -14,8 +14,8 @@ cmdGen = cmdgen.CommandGenerator()
 
 errorIndication, errorStatus, errorIndex, varBinds = cmdGen.getCmd(
     cmdgen.UsmUserData('usr-md5-none', 'authkey1'),
-    cmdgen.UdpTransportTarget(('localhost', 161)),
-    cmdgen.MibVariable('IP-MIB', 'ipAdEntAddr', '127.0.0.1')
+    cmdgen.UdpTransportTarget(('demo.snmplabs.com', 161)),
+    cmdgen.MibVariable('IF-MIB', 'ifInOctets', '1')
 )
 
 # Check for errors and print out results
diff --git a/examples/hlapi/asyncore/sync/manager/cmdgen/v1-get.py b/examples/hlapi/asyncore/sync/manager/cmdgen/v1-get.py
index 34ae8817..f05c5f80 100644
--- a/examples/hlapi/asyncore/sync/manager/cmdgen/v1-get.py
+++ b/examples/hlapi/asyncore/sync/manager/cmdgen/v1-get.py
@@ -5,7 +5,7 @@
 #
 # * with SNMPv1, community 'public'
 # * over IPv4/UDP
-# * to an Agent at localhost:161
+# * to an Agent at demo.snmplabs.com:161
 # * for two instances of SNMPv2-MIB::sysDescr.0 MIB object,
 # * one in label and another in MIB symbol form
 #
@@ -15,7 +15,7 @@ cmdGen = cmdgen.CommandGenerator()
 
 errorIndication, errorStatus, errorIndex, varBinds = cmdGen.getCmd(
     cmdgen.CommunityData('public', mpModel=0),
-    cmdgen.UdpTransportTarget(('localhost', 161)),
+    cmdgen.UdpTransportTarget(('demo.snmplabs.com', 161)),
     cmdgen.MibVariable('iso.org.dod.internet.mgmt.mib-2.system.sysDescr.0'),
     cmdgen.MibVariable('SNMPv2-MIB', 'sysDescr', 0)
 )
diff --git a/examples/hlapi/asyncore/sync/manager/cmdgen/v2c-get.py b/examples/hlapi/asyncore/sync/manager/cmdgen/v2c-get.py
index fa2a263c..de39b6ce 100644
--- a/examples/hlapi/asyncore/sync/manager/cmdgen/v2c-get.py
+++ b/examples/hlapi/asyncore/sync/manager/cmdgen/v2c-get.py
@@ -5,7 +5,7 @@
 #
 # * with SNMPv2c, community 'public'
 # * over IPv4/UDP
-# * to an Agent at localhost:161
+# * to an Agent at demo.snmplabs.com:161
 # * for two OIDs in string form 
 #
 from pysnmp.entity.rfc3413.oneliner import cmdgen
@@ -14,7 +14,7 @@ cmdGen = cmdgen.CommandGenerator()
 
 errorIndication, errorStatus, errorIndex, varBinds = cmdGen.getCmd(
     cmdgen.CommunityData('public'),
-    cmdgen.UdpTransportTarget(('localhost', 161)),
+    cmdgen.UdpTransportTarget(('demo.snmplabs.com', 161)),
     '1.3.6.1.2.1.1.1.0',
     '1.3.6.1.2.1.1.6.0'
 )
diff --git a/examples/hlapi/asyncore/sync/manager/cmdgen/v2c-getbulk.py b/examples/hlapi/asyncore/sync/manager/cmdgen/v2c-getbulk.py
index 6b8952ac..d6c974c2 100644
--- a/examples/hlapi/asyncore/sync/manager/cmdgen/v2c-getbulk.py
+++ b/examples/hlapi/asyncore/sync/manager/cmdgen/v2c-getbulk.py
@@ -5,7 +5,7 @@
 #
 # * with SNMPv2c, community 'public'
 # * over IPv4/UDP
-# * to an Agent at localhost:161
+# * to an Agent at demo.snmplabs.com:161
 # * with values non-repeaters = 0, max-repetitions = 25
 # * for two OIDs in string form
 # * stop when response OIDs leave the scopes of initial OIDs
@@ -16,7 +16,7 @@ cmdGen = cmdgen.CommandGenerator()
 
 errorIndication, errorStatus, errorIndex, varBindTable = cmdGen.bulkCmd(
     cmdgen.CommunityData('public'),
-    cmdgen.UdpTransportTarget(('localhost', 161)),
+    cmdgen.UdpTransportTarget(('demo.snmplabs.com', 161)),
     0, 25,
     '1.3.6.1.2.1.2.2.1.2',
     '1.3.6.1.2.1.2.2.1.3',