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2561
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4
Helpful
9
Replies

DHCP on Cisco 3650 Switch Acting Strange

Dean Romanelli
Level 4
Level 4

‎06-28-2017 02:52 PM - edited ‎03-08-2019 11:08 AM

Hi All,

Every morning I come in and find that users cannot get IP addresses from the DHCP function running on my Cisco 3650 switch.  I have to do clear ip dhcp binding * 102 times a day.  My lease duration is 1 day. 

One strange thing I see is multiple leases with the same IP address:

SW142Core-TOX3650A#   show ip dhcp binding
Bindings from all pools not associated with VRF:
IP address      Client-ID/              Lease expiration        Type       State      Interface
                Hardware address/
                User name

192.168.143.10  0168.a3c4.ee09.45       Jun 29 2017 05:25 PM    Automatic  Active     Vlan21
192.168.143.10  0198.ded0.1fc8.ab       Jun 29 2017 03:55 PM    Automatic  Active     Vlan21
192.168.143.10  980c.a5fd.ab43          Jun 29 2017 05:26 PM    Automatic  Active     Vlan21
192.168.143.10  0110.02b5.e693.c6       Jun 29 2017 05:13 PM    Automatic  Active     Vlan21
192.168.143.10  01ac.e010.2212.0d       Jun 29 2017 03:01 PM    Automatic  Active     Vlan21
192.168.143.10  0164.bc0c.85d4.04       Jun 29 2017 03:52 PM    Automatic  Active     Vlan21
192.168.143.10  a471.7489.91b8          Jun 29 2017 02:25 PM    Automatic  Active     Vlan21
192.168.143.10  0110.02b5.e56a.5a       Jun 29 2017 05:20 PM    Automatic  Active     Vlan21
192.168.143.10  01e0.9861.d786.b7       Jun 29 2017 02:58 PM    Automatic  Active     Vlan21
192.168.143.10  0144.d884.07c1.4a       Jun 29 2017 02:28 PM    Automatic  Active     Vlan21
192.168.143.11  7404.2bad.24ef          Jun 29 2017 05:30 PM    Automatic  Active     Vlan21
192.168.143.11  01dc.5360.2ee2.35       Jun 29 2017 04:50 PM    Automatic  Active     Vlan21
192.168.143.11  0128.5aeb.b6de.ba       Jun 29 2017 01:27 PM    Automatic  Active     Vlan21
192.168.143.11  01ac.7ba1.82a6.1d       Jun 29 2017 05:05 PM    Automatic  Active     Vlan21
192.168.143.11  01a2.901e.267f.93       Jun 29 2017 01:30 PM    Automatic  Active     Vlan21
192.168.143.11  0184.100d.1d5d.a4       Jun 29 2017 03:13 PM    Automatic  Active     Vlan21
192.168.143.11  015c.e0c5.9b6d.f1       Jun 29 2017 05:27 PM    Automatic  Active     Vlan21
192.168.143.11  01dc.5360.2ee1.c2       Jun 29 2017 02:10 PM    Automatic  Active     Vlan21
192.168.143.11  0110.02b5.b562.d3       Jun 29 2017 05:29 PM    Automatic  Active     Vlan21
192.168.143.11  0168.1401.3e44.93       Jun 29 2017 05:13 PM    Automatic  Active     Vlan21
192.168.143.12  01a8.bbcf.aa45.56       Jun 29 2017 04:49 PM    Automatic  Active     Vlan21
192.168.143.12  4040.a752.b794          Jun 29 2017 05:29 PM    Automatic  Active     Vlan21
192.168.143.12  01e8.3a12.a048.2a       Jun 29 2017 05:17 PM    Automatic  Active     Vlan21
192.168.143.12  01dc.5360.2ee1.e5       Jun 29 2017 05:28 PM    Automatic  Active     Vlan21
192.168.143.12  0110.02b5.e587.f1       Jun 29 2017 05:22 PM    Automatic  Active     Vlan21
192.168.143.12  017c.5cf8.77df.e4       Jun 29 2017 02:36 PM    Automatic  Active     Vlan21
192.168.143.12  0134.145f.1595.d3       Jun 29 2017 05:30 PM    Automatic  Active     Vlan21
192.168.143.14  a8c8.3a23.98ba          Jun 29 2017 05:30 PM    Automatic  Active     Vlan22
192.168.143.14  2400.ba29.f7e7          Jun 29 2017 04:42 PM    Automatic  Active     Vlan22
192.168.143.14  ac0d.1ba5.b83c          Jun 29 2017 04:55 PM    Automatic  Active     Vlan22
192.168.143.14  01b4.ef39.0d80.79       Jun 29 2017 05:14 PM    Automatic  Active     Vlan22
192.168.143.14  24df.6aa2.b359          Jun 29 2017 05:29 PM    Automatic  Active     Vlan22
192.168.143.14  94d8.5984.9b70          Jun 29 2017 05:24 PM    Automatic  Active     Vlan22
192.168.143.14  e808.8b8d.a5f4          Jun 29 2017 02:07 PM    Automatic  Active     Vlan22
192.168.143.14  017c.5cf8.9e3e.0f       Jun 29 2017 04:24 PM    Automatic  Active     Vlan22
192.168.143.14  0100.0af5.70ef.38       Jun 29 2017 03:21 PM    Automatic  Active     Vlan22
192.168.143.15  0184.b541.b44a.e2       Jun 29 2017 05:28 PM    Automatic  Active     Vlan22
192.168.143.15  0134.0286.5431.9d       Jun 29 2017 03:52 PM    Automatic  Active     Vlan22
192.168.143.15  01d0.fccc.bcc2.bb       Jun 29 2017 05:23 PM    Automatic  Active     Vlan22
192.168.143.15  b8bc.1b0f.4502          Jun 29 2017 05:16 PM    Automatic  Active     Vlan22
192.168.143.15  0188.797e.e893.7d       Jun 29 2017 05:31 PM    Automatic  Active     Vlan22
192.168.143.15  017c.4685.572c.d1       Jun 29 2017 05:30 PM    Automatic  Active     Vlan22
192.168.143.15  0110.02b5.b10c.1a       Jun 29 2017 04:41 PM    Automatic  Active     Vlan22
192.168.143.15  1c8e.5cca.6017          Jun 29 2017 03:23 PM    Automatic  Active     Vlan22
192.168.143.15  0118.cf5e.90d1.ef       Jun 29 2017 03:42 PM    Automatic  Active     Vlan22
192.168.143.15  01f0.2765.7176.ab       Jun 29 2017 05:00 PM     Automatic  Active     Vlan22
192.168.143.16  44c3.460d.b297          Jun 29 2017 02:21 PM    Automatic  Active     Vlan22
192.168.143.16  0184.16f9.0e10.35       Jun 29 2017 02:29 PM    Automatic  Active     Vlan22
192.168.143.16  012c.4d54.9045.3d       Jun 29 2017 02:50 PM    Automatic  Active     Vlan22
192.168.143.16  0164.db43.ef6b.c0       Jun 29 2017 03:09 PM    Automatic  Active     Vlan22
192.168.143.16  0114.5f94.62d0.eb       Jun 29 2017 04:54 PM    Automatic  Active     Vlan22
192.168.143.16  0180.7abf.36ee.28       Jun 29 2017 04:28 PM    Automatic  Active     Vlan22
192.168.143.16  01d4.ae05.466e.bb       Jun 29 2017 05:28 PM    Automatic  Active     Vlan22
192.168.143.16  01dc.5360.2ee2.35       Jun 29 2017 01:41 PM    Automatic  Active     Vlan22
192.168.143.16  74ba.db52.62af          Jun 29 2017 05:18 PM    Automatic  Active     Vlan22
192.168.143.16  01e0.db10.dd02.2d       Jun 29 2017 02:50 PM    Automatic  Active     Vlan22
192.168.143.17  01c0.d3c0.d249.4d       Jun 29 2017 05:30 PM    Automatic  Active     Vlan22
192.168.143.17  01de.5360.2ee1.bd       Jun 28 2017 05:34 PM    Automatic  Selecting  Vlan22
192.168.143.17  01dc.5360.2ee1.bd       Jun 29 2017 05:08 PM    Automatic  Active     Vlan22
192.168.143.17  010c.b319.fad2.b1       Jun 29 2017 05:24 PM    Automatic  Active     Vlan22
192.168.143.17  01b8.57d8.469c.7c       Jun 29 2017 05:14 PM    Automatic  Active     Vlan22
192.168.143.17  4cfb.454a.3f31          Jun 29 2017 05:15 PM    Automatic  Active     Vlan22
192.168.143.17  01dc.5360.2ee1.04       Jun 29 2017 05:22 PM    Automatic  Active     Vlan22
192.168.143.17  019c.d917.83d0.46       Jun 29 2017 03:45 PM    Automatic  Active     Vlan22
192.168.143.17  806a.b017.8196          Jun 29 2017 05:26 PM    Automatic  Active     Vlan22
192.168.143.17  0178.f882.b016.20       Jun 29 2017 04:52 PM    Automatic  Active     Vlan22
192.168.143.18  01de.5360.2ee1.be       Jun 28 2017 05:36 PM    Automatic  Selecting  Vlan22
192.168.143.18  b0e0.3c0e.a8cc          Jun 29 2017 03:14 PM    Automatic  Active     Vlan22
192.168.143.18  0184.55a5.adce.55       Jun 29 2017 05:27 PM    Automatic  Active     Vlan22
192.168.143.18  f49f.f319.2008          Jun 29 2017 05:30 PM    Automatic  Active     Vlan22
192.168.143.18  0184.3a4b.5b67.e0       Jun 29 2017 12:12 PM    Automatic  Active     Vlan22
192.168.143.18  01a4.7174.d048.5a       Jun 29 2017 02:48 PM    Automatic  Active     Vlan22
192.168.143.18  74ba.db4e.c99b          Jun 29 2017 05:16 PM    Automatic  Active     Vlan22
192.168.143.18  01f4.f1e1.6ef8.d9       Jun 29 2017 05:31 PM    Automatic  Active     Vlan22
192.168.143.18  14a5.1aa5.8cf2          Jun 29 2017 03:32 PM    Automatic  Active     Vlan22
192.168.143.18  019c.d917.33ec.08       Jun 29 2017 05:09 PM    Automatic  Active     Vlan22
192.168.143.19  015c.e0c5.e28d.17       Jun 29 2017 03:07 PM    Automatic  Active     Vlan22
192.168.143.20  01c0.bdd1.7ee7.90       Jun 29 2017 04:39 PM    Automatic  Active     Vlan23
192.168.143.20  01c0.d3c0.d249.4d       Jun 29 2017 02:53 PM    Automatic  Active     Vlan23
192.168.143.21  0128.5aeb.b673.56       Jun 29 2017 03:08 PM    Automatic  Active     Vlan23
192.168.143.21  016c.8dc1.ba4a.ee       Jun 29 2017 03:17 PM    Automatic  Active     Vlan23
192.168.143.21  0148.bf6b.8985.30       Jun 29 2017 03:57 PM    Automatic  Active     Vlan23
192.168.143.21  0118.2195.2867.96       Jun 29 2017 05:23 PM    Automatic  Active     Vlan23
192.168.143.21  01a0.39f7.4e22.0f       Jun 29 2017 05:31 PM    Automatic  Active     Vlan23
192.168.143.21  015c.e0c5.9b6d.f1       Jun 29 2017 04:53 PM    Automatic  Active     Vlan23
192.168.143.21  01ac.7ba1.82a6.1d       Jun 29 2017 05:04 PM    Automatic  Active     Vlan23
192.168.143.21  01b8.098a.be47.19       Jun 29 2017 05:08 PM    Automatic  Active     Vlan23
192.168.143.22  01f4.b7e2.bc3f.ec       Jun 29 2017 05:20 PM    Automatic  Active     Vlan23
192.168.143.22  0136.0286.5420.91       Jun 28 2017 05:33 PM    Automatic  Selecting  Vlan23
192.168.143.22  0136.0286.5420.90       Jun 28 2017 05:33 PM    Automatic  Selecting  Vlan23
192.168.143.24  01e8.b4c8.8e30.58       Jun 29 2017 05:30 PM    Automatic  Active     Vlan23
192.168.143.24  015c.70a3.649c.e4       Jun 29 2017 05:23 PM    Automatic  Active     Vlan23
192.168.143.24  0190.b686.d0f1.9e       Jun 29 2017 05:14 PM    Automatic  Active     Vlan23
192.168.143.24  01c0.bdd1.7eea.15       Jun 29 2017 01:39 PM    Automatic  Active     Vlan23
192.168.143.24  0134.145f.1595.d3       Jun 29 2017 05:26 PM    Automatic  Active     Vlan23
192.168.143.24  01a4.70d6.8362.96       Jun 29 2017 05:30 PM    Automatic  Active     Vlan23
192.168.143.25  18e3.bcb8.d9db          Jun 29 2017 02:41 PM    Automatic  Active     Vlan23

Here is my DHCP config:

no ip dhcp conflict logging
ip dhcp excluded-address 192.168.142.1 192.168.142.59
ip dhcp excluded-address 192.168.142.240 192.168.142.254
ip dhcp excluded-address 192.168.143.1 192.168.143.19
ip dhcp excluded-address 192.168.143.129 192.168.143.139
ip dhcp excluded-address 192.168.143.193 192.168.143.203
ip dhcp excluded-address 172.16.142.1 172.16.142.11
no ip dhcp ping packets   <----- tried to add this as a potential remedy, but it did not work.
!
ip dhcp pool VOIP
 network 172.16.142.0 255.255.255.0
 default-router 172.16.142.5
 domain-name scrubbed.local
 dns-server 8.8.8.8 4.2.2.2
 option 42 ip 192.168.142.1
!
ip dhcp pool Wired-Staff
 network 192.168.142.0 255.255.255.0
 default-router 192.168.142.1
 domain-name scrubbed.local
 option 42 ip 192.168.142.1
 dns-server 10.10.10.8 10.10.10.5
!
ip dhcp pool Wifi-Staff
 network 192.168.143.0 255.255.255.128
 default-router 192.168.143.1
 domain-name scrubbed.local
 option 42 ip 192.168.142.1
 dns-server 10.10.10.8 10.10.10.5
!
ip dhcp pool Wifi-Guest
 network 192.168.143.128 255.255.255.192
 default-router 192.168.143.129
 domain-name scrubbed.local
 dns-server 8.8.8.8 4.2.2.2
 option 42 ip 192.168.142.1
!
ip dhcp pool Wifi-Suppliers
 network 192.168.143.192 255.255.255.192
 default-router 192.168.143.193
 domain-name scrubbed.local
 dns-server 8.8.8.8 4.2.2.2
 option 42 ip 192.168.142.1

Show ver:

Switch Ports Model              SW Version        SW Image              Mode
------ ----- -----              ----------        ----------            ----
*    1 28    WS-C3650-24TS      03.03.05SE        cat3k_caa-universalk9 INSTALL

Has anyone run into this issue?

Labels:
0 Helpful
9 Replies 9

johnd2310
Level 8
Level 8

‎06-28-2017 04:14 PM

Hi,

 Does you pool have enough address for the number of clients? You need the "ip dhcp ping packets" command to force the DHCP server to ping the address before assignment. Have tried adding the "ip dhcp conflict resolution interval" command? 

Thanks

John

**Please rate posts you find helpful**
0 Helpful

Dean Romanelli
Level 4
Level 4
In response to johnd2310

‎06-28-2017 04:28 PM

Hi John,

I have condlict logging disabled because it caused an issue on my 3750 switches in the past.  I suppose I can try enabling it.

0 Helpful

Dean Romanelli
Level 4
Level 4
In response to Dean Romanelli

‎06-29-2017 08:11 AM

Here is what I tried last night, but issue still persists.  Now it is even giving out the wrong DNS to a few people:

ip dhcp binding cleanup interval 300
ip dhcp conflict resolution interval 5
ip dhcp ping packets 4
ip dhcp conflict logging

Changed all scope lease times to 8 hours as well.

Perhaps I have a rouge DHCP server on the network? Can I use snooping in a meaningful way on a switch that is the DHCP server itself?

What's interesting is that the duplicate entries in bold below are mostly excluded addresses:

ip dhcp excluded-address 192.168.143.1 192.168.143.19

SW142TocancipaCore-TOX3650A#show ip dhcp binding
Bindings from all pools not associated with VRF:
IP address      Client-ID/              Lease expiration        Type       State      Interface
                Hardware address/
                User name
172.16.142.12   01bc.c342.1d6e.03       Jun 29 2017 05:43 PM    Automatic  Active     Vlan3
172.16.142.13   01bc.c342.1d78.02       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.15   01bc.c342.1d76.22       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.16   01bc.c342.1d6e.26       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.17   01bc.c342.055a.34       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.18   01bc.c342.1d70.3c       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.19   01bc.c342.1d6f.35       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.20   01bc.c342.1d6e.0c       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.21   01bc.c342.1d7a.4e       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.22   01bc.c342.1d6f.36       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.23   01bc.c342.1d78.29       Jun 29 2017 05:50 PM    Automatic  Active     Vlan3
172.16.142.24   01bc.c342.1d6e.13       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.25   01bc.c342.1d6f.37       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.26   01bc.c342.1d6e.0d       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.27   01bc.c342.1d7a.4d       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.28   01bc.c342.1d6e.1e       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.29   01bc.c342.1d76.17       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.30   01bc.c342.1d77.c7       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.31   01bc.c342.1d6e.07       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.32   01bc.c342.1d79.c3       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.33   01bc.c342.1d6e.12       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.34   01bc.c342.1d6e.02       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.35   01bc.c342.1d77.b8       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.36   01bc.c342.1d6e.21       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.37   01bc.c342.1d7a.4f       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.38   01bc.c342.1d6e.11       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.39   0108.0023.63b5.22       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.40   01bc.c342.1d76.31       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.41   01bc.c342.1d6e.2b       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.42   01bc.c342.1d77.b0       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.43   01bc.c342.1d77.b9       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.44   01bc.c342.1d6e.16       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.45   01bc.c342.1d6d.f0       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.46   0108.0023.a4dc.fc       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.47   01bc.c342.1d79.c5       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.48   01bc.c342.1d6e.14       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.49   01bc.c342.1d77.d4       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.50   01bc.c342.0576.d2       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.51   01bc.c342.1d6e.15       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.52   01bc.c342.1d79.ca       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.53   01bc.c342.1d7a.50       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.54   01bc.c342.1d7a.e1       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.55   01bc.c342.1d6e.27       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.56   0108.0023.a4dd.47       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.57   01bc.c342.1d77.bc       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.58   01bc.c342.1d6e.3a       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.59   01bc.c342.1d6d.ee       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.60   01bc.c342.0576.d0       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.61   01bc.c342.1d6e.17       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.62   01bc.c342.1d77.b5       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.63   01bc.c342.1d79.c8       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.64   01bc.c342.1d7a.e2       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.65   01bc.c342.1d7a.57       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.66   01bc.c342.1d6e.30       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.67   01bc.c342.1d79.c2       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.68   01bc.c342.1d77.f5       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.69   01bc.c342.1d79.c1       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.70   01bc.c342.1d76.69       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.71   01bc.c342.1d76.68       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.72   01bc.c342.1d6d.f7       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.73   01bc.c342.0576.d5       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.74   01bc.c342.1d77.eb       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.75   0108.0023.a4f8.b6       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.76   01bc.c342.1d7a.5c       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.77   01bc.c342.1d75.fd       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.78   01bc.c342.1d77.d9       Jun 29 2017 05:50 PM    Automatic  Active     Vlan3
172.16.142.79   01bc.c342.1d79.c0       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.80   01bc.c342.1d6e.36       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.81   01bc.c342.1d77.d8       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.82   01bc.c342.1d77.d7       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.83   01bc.c342.1d70.3e       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.84   01bc.c342.1d79.c4       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.85   01bc.c342.1d7a.e3       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.86   01bc.c342.1d6d.df       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.87   01bc.c342.1d77.f4       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.88   01bc.c342.1d79.c9       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.89   01bc.c342.1d6d.ef       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.90   01bc.c342.1d77.e1       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.91   0100.80f0.9a83.68       Jun 29 2017 05:49 PM    Automatic  Active     Vlan3
172.16.142.92   01bc.c342.1d77.da       Jun 29 2017 04:19 PM    Automatic  Active     Vlan3
192.168.142.60  01bc.c342.1d6d.e0       Jun 29 2017 05:49 PM    Automatic  Active     Vlan1
192.168.142.61  01bc.c342.1d6d.f6       Jun 29 2017 05:49 PM    Automatic  Active     Vlan1
192.168.142.62  0144.8a5b.575d.11       Jun 29 2017 03:50 PM    Automatic  Active     Vlan1
192.168.142.64  0198.eecb.356e.6f       Jun 29 2017 06:27 PM    Automatic  Active     Vlan1
192.168.142.66  0164.5106.a825.74       Jun 29 2017 03:48 PM    Automatic  Active     Vlan1
192.168.142.67  0144.39c4.5043.90       Jun 29 2017 03:50 PM    Automatic  Active     Vlan1
192.168.142.68  01f8.0f41.be44.d7       Jun 29 2017 05:10 PM    Automatic  Active     Vlan1
192.168.142.71  0046.444f.3230.3137.    Jun 29 2017 03:54 PM    Automatic  Active     Vlan1
                5430.324b
192.168.142.72  01f4.5433.51a1.c4       Jun 29 2017 06:47 PM    Automatic  Active     Vlan1
192.168.142.73  0144.37e6.d890.08       Jun 29 2017 04:03 PM    Automatic  Active     Vlan1
192.168.142.76  0174.27ea.3409.db       Jun 29 2017 05:52 PM    Automatic  Active     Vlan1
192.168.142.85  0144.8a5b.0470.02       Jun 29 2017 04:44 PM    Automatic  Active     Vlan1
192.168.142.88  0100.2522.b45c.b5       Jun 29 2017 03:48 PM    Automatic  Active     Vlan1
192.168.142.89  0198.eecb.356d.83       Jun 29 2017 06:27 PM    Automatic  Active     Vlan1
192.168.142.90  0174.27ea.3437.41       Jun 29 2017 04:04 PM    Automatic  Active     Vlan1
192.168.142.91  0063.6973.636f.2d66.    Jun 29 2017 06:43 PM    Automatic  Active     Vlan1
                3435.342e.3333.6364.
                2e61.3663.302d.566c.
                31
192.168.142.92  010c.4de9.d398.e9       Jun 29 2017 05:06 PM    Automatic  Active     Vlan1
192.168.142.95  01d0.2788.7414.74       Jun 29 2017 06:47 PM    Automatic  Active     Vlan1
192.168.142.97  0100.2324.a45f.b3       Jun 29 2017 05:31 PM    Automatic  Active     Vlan1
192.168.142.10  0150.7b9d.af09.c8       Jun 29 2017 06:31 PM    Automatic  Active     Vlan1
192.168.142.10  01de.5360.2ee1.05       Jun 29 2017 11:05 AM    Automatic  Selecting  Vlan1
192.168.142.11  01de.5360.2ee1.04       Jun 29 2017 11:02 AM    Automatic  Selecting  Vlan1
192.168.142.14  0100.2522.b457.55       Jun 29 2017 05:14 PM    Automatic  Active     Vlan1
192.168.142.14  0144.8a5b.56b9.df       Jun 29 2017 04:24 PM    Automatic  Active     Vlan1
192.168.142.14  0174.27ea.a8db.06       Jun 29 2017 05:52 PM    Automatic  Active     Vlan1
192.168.142.18  0110.78d2.e445.f0       Jun 29 2017 04:00 PM    Automatic  Active     Vlan1
192.168.142.20  01f8.0f41.8421.ec       Jun 29 2017 04:36 PM    Automatic  Active     Vlan1
192.168.143.20  0164.bc0c.85d4.04       Jun 29 2017 05:30 PM    Automatic  Active     Vlan21
192.168.143.21  0134.0286.5430.f8       Jun 29 2017 06:59 PM    Automatic  Active     Vlan21
192.168.143.22  015e.e0c5.e287.3b       Jun 29 2017 11:03 AM    Automatic  Selecting  Vlan21
192.168.143.23  0112.02b5.e56a.60       Jun 29 2017 11:04 AM    Automatic  Selecting  Vlan21
192.168.143.24  01e0.db10.dd02.2d       Jun 29 2017 06:22 PM    Automatic  Active     Vlan21
192.168.143.25  017c.5cf8.9e4a.62       Jun 29 2017 06:28 PM    Automatic  Active     Vlan21
192.168.143.27  a471.7489.91b8          Jun 29 2017 04:32 PM    Automatic  Active     Vlan21
192.168.143.28  019c.d21e.4123.1b       Jun 29 2017 04:33 PM    Automatic  Active     Vlan21
192.168.143.29  019c.ad97.c8f2.fb       Jun 29 2017 07:00 PM    Automatic  Active     Vlan21
192.168.143.31  01dc.5360.2ee1.e5       Jun 29 2017 05:32 PM    Automatic  Active     Vlan21
192.168.143.32  0100.26c7.63f0.8d       Jun 29 2017 11:07 AM    Automatic  Selecting  Vlan21
192.168.143.33  018c.a982.02d4.43       Jun 29 2017 11:02 AM    Automatic  Selecting  Vlan21
192.168.143.35  0112.02b5.e693.c6       Jun 29 2017 11:07 AM    Automatic  Selecting  Vlan21
192.168.143.36  0180.56f2.f538.89       Jun 29 2017 04:04 PM    Automatic  Active     Vlan21
192.168.143.37  7c7d.3dab.b1b4          Jun 29 2017 06:23 PM    Automatic  Active     Vlan21
192.168.143.38  019c.d917.360e.30       Jun 29 2017 04:00 PM    Automatic  Active     Vlan21
192.168.143.39  0168.c44d.3c24.41       Jun 29 2017 03:35 PM    Automatic  Active     Vlan21
192.168.143.40  0194.b10a.972d.cf       Jun 29 2017 06:54 PM    Automatic  Active     Vlan21
192.168.143.41  0160.a4d0.dcc8.0a       Jun 29 2017 03:38 PM    Automatic  Active     Vlan21
192.168.143.42  4040.a752.b794          Jun 29 2017 05:46 PM    Automatic  Active     Vlan21
192.168.143.43  0138.9496.682d.5e       Jun 29 2017 03:38 PM    Automatic  Active     Vlan21
192.168.143.44  015c.e0c5.e287.3b       Jun 29 2017 03:39 PM    Automatic  Active     Vlan21
192.168.143.45  0110.9266.6a3c.b6       Jun 29 2017 03:39 PM    Automatic  Active     Vlan21
192.168.143.46  4888.ca19.80c0          Jun 29 2017 03:39 PM    Automatic  Active     Vlan21
192.168.143.47  3cfa.433d.c648          Jun 29 2017 05:20 PM    Automatic  Active     Vlan21
192.168.143.48  980c.a5fd.ab43          Jun 29 2017 03:41 PM    Automatic  Active     Vlan21
192.168.143.49  ac0d.1bd9.1eb9          Jun 29 2017 06:13 PM    Automatic  Active     Vlan21
192.168.143.50  9c5c.f969.8a60          Jun 29 2017 04:56 PM    Automatic  Active     Vlan21
192.168.143.51  01e8.b4c8.7912.e5       Jun 29 2017 04:44 PM    Automatic  Active     Vlan21
192.168.143.52  0154.f201.7dc4.ff       Jun 29 2017 05:38 PM    Automatic  Active     Vlan21
192.168.143.53  01c4.0bcb.35ef.3d       Jun 29 2017 06:29 PM    Automatic  Active     Vlan21
192.168.143.54  01e8.9309.bec3.d8       Jun 29 2017 03:45 PM    Automatic  Active     Vlan21
192.168.143.55  0194.b10a.9723.63       Jun 29 2017 07:01 PM    Automatic  Active     Vlan21
192.168.143.56  01b0.0594.faa4.9c       Jun 29 2017 03:42 PM    Automatic  Active     Vlan21
192.168.143.57  01f0.ee10.f499.ca       Jun 29 2017 03:42 PM    Automatic  Active     Vlan21
192.168.143.58  30a8.dbca.c585          Jun 29 2017 06:56 PM    Automatic  Active     Vlan21
192.168.143.59  0180.58f8.51c3.bc       Jun 29 2017 06:28 PM    Automatic  Active     Vlan21
192.168.143.60  0174.e50b.f038.d2       Jun 29 2017 06:51 PM    Automatic  Active     Vlan21
192.168.143.61  0180.86f2.81e4.53       Jun 29 2017 05:13 PM    Automatic  Active     Vlan21
192.168.143.62  0100.19d2.2240.91       Jun 29 2017 03:46 PM    Automatic  Active     Vlan21
192.168.143.63  0164.a3cb.4492.cb       Jun 29 2017 03:49 PM    Automatic  Active     Vlan21
192.168.143.64  01c0.bdd1.cf5f.5e       Jun 29 2017 05:05 PM    Automatic  Active     Vlan21
192.168.143.65  a4ba.764e.f948          Jun 29 2017 04:44 PM    Automatic  Active     Vlan21
192.168.143.66  016c.8814.55b0.2c       Jun 29 2017 06:32 PM    Automatic  Active     Vlan21
192.168.143.67  8cc5.e1c0.280d          Jun 29 2017 06:17 PM    Automatic  Active     Vlan21
192.168.143.68  0134.8a7b.8b77.bc       Jun 29 2017 06:49 PM    Automatic  Active     Vlan21
192.168.143.69  0112.02b5.e56a.5f       Jun 29 2017 11:03 AM    Automatic  Selecting  Vlan21
192.168.143.70  019c.d917.33ec.08       Jun 29 2017 06:53 PM    Automatic  Active     Vlan21
192.168.143.71  015e.e0c5.9a4e.80       Jun 29 2017 11:02 AM    Automatic  Selecting  Vlan21
192.168.143.72  0144.0010.13c8.32       Jun 29 2017 05:41 PM    Automatic  Active     Vlan21
192.168.143.73  01d8.5de2.28ca.0f       Jun 29 2017 06:20 PM    Automatic  Active     Vlan21
192.168.143.74  7404.2bad.24ef          Jun 29 2017 03:49 PM    Automatic  Active     Vlan21
192.168.143.75  0124.240e.23f4.40       Jun 29 2017 05:48 PM    Automatic  Active     Vlan21
192.168.143.76  01ac.61ea.e6b7.0c       Jun 29 2017 04:59 PM    Automatic  Active     Vlan21
192.168.143.77  01e0.accb.56d2.bb       Jun 29 2017 03:51 PM    Automatic  Active     Vlan21
192.168.143.78  01c0.f8da.213e.c8       Jun 29 2017 06:15 PM    Automatic  Active     Vlan21
192.168.143.79  4cfb.4515.b24d          Jun 29 2017 06:36 PM    Automatic  Active     Vlan21
192.168.143.80  c851.9570.2c77          Jun 29 2017 06:33 PM    Automatic  Active     Vlan21
192.168.143.81  0180.9b20.e301.35       Jun 29 2017 11:07 AM    Automatic  Selecting  Vlan21
192.168.143.82  14a5.1ade.7da7          Jun 29 2017 06:20 PM    Automatic  Active     Vlan21
192.168.143.84  0164.2737.53c2.e5       Jun 29 2017 06:03 PM    Automatic  Active     Vlan21
192.168.143.85  016c.8dc1.ba4a.ee       Jun 29 2017 03:57 PM    Automatic  Active     Vlan21
192.168.143.86  015c.5188.4e6b.3f       Jun 29 2017 06:41 PM    Automatic  Active     Vlan21
192.168.143.87  0134.0286.7600.b6       Jun 29 2017 06:20 PM    Automatic  Active     Vlan21
192.168.143.88  0160.f81d.6c02.bc       Jun 29 2017 03:57 PM    Automatic  Active     Vlan21
192.168.143.89  0180.9b20.e301.34       Jun 29 2017 05:46 PM    Automatic  Active     Vlan21
192.168.143.90  0130.1966.7741.df       Jun 29 2017 04:07 PM    Automatic  Active     Vlan21
192.168.143.91  015e.e0c5.e287.3c       Jun 29 2017 11:07 AM    Automatic  Selecting  Vlan21
192.168.143.92  0134.0286.5430.fc       Jun 29 2017 11:06 AM    Automatic  Selecting  Vlan21
192.168.143.93  0136.0286.5430.f9       Jun 29 2017 11:07 AM    Automatic  Selecting  Vlan21
192.168.143.94  01d8.5de2.a472.ef       Jun 29 2017 05:10 PM    Automatic  Active     Vlan21
192.168.143.95  01e0.9861.d786.b7       Jun 29 2017 06:59 PM    Automatic  Active     Vlan21
192.168.143.96  015c.e0c5.9a2b.8a       Jun 29 2017 04:09 PM    Automatic  Active     Vlan21
192.168.143.97  01dc.5360.2ee1.04       Jun 29 2017 06:26 PM    Automatic  Active     Vlan21
192.168.143.98  016c.8dc1.bd2d.60       Jun 29 2017 06:31 PM    Automatic  Active     Vlan21
192.168.143.99  0134.145f.1595.d3       Jun 29 2017 06:33 PM    Automatic  Active     Vlan21
192.168.143.10  0184.3a4b.5b67.e0       Jun 29 2017 04:12 PM    Automatic  Active     Vlan21
192.168.143.10  018c.a982.02d4.42       Jun 29 2017 06:22 PM    Automatic  Active     Vlan21
192.168.143.10  0118.2195.0b3d.ce       Jun 29 2017 06:24 PM    Automatic  Active     Vlan21
192.168.143.10  0128.565a.4c7c.b5       Jun 29 2017 05:19 PM    Automatic  Active     Vlan21
192.168.143.10  01ac.e010.2212.0d       Jun 29 2017 07:01 PM    Automatic  Active     Vlan21
192.168.143.10  01e8.3a12.a048.2a       Jun 29 2017 06:58 PM    Automatic  Active     Vlan21
192.168.143.10  015c.e0c5.9a4e.80       Jun 29 2017 05:19 PM    Automatic  Active     Vlan21
192.168.143.10  0198.ded0.1fc8.ab       Jun 29 2017 06:44 PM    Automatic  Active     Vlan21
192.168.143.10  0140.45da.6fe8.fa       Jun 29 2017 06:50 PM    Automatic  Active     Vlan21
192.168.143.11  01c0.bdd1.d040.80       Jun 29 2017 06:46 PM    Automatic  Active     Vlan21
192.168.143.11  0112.02b5.e56a.5a       Jun 29 2017 11:03 AM    Automatic  Selecting  Vlan21
192.168.143.11  014c.3488.9ffd.1c       Jun 29 2017 06:57 PM    Automatic  Active     Vlan21
192.168.143.11  0128.5aeb.b673.56       Jun 29 2017 04:18 PM    Automatic  Active     Vlan21
192.168.143.11  f4cb.5239.d40a          Jun 29 2017 06:21 PM    Automatic  Active     Vlan21
192.168.143.11  015c.e0c5.9b6d.f1       Jun 29 2017 06:37 PM    Automatic  Active     Vlan21
192.168.143.11  0110.02b5.e56a.5a       Jun 29 2017 06:51 PM    Automatic  Active     Vlan21
192.168.143.12  015c.e0c5.9a4f.66       Jun 29 2017 04:56 PM    Automatic  Active     Vlan21
192.168.143.12  64a6.5156.d4d4          Jun 29 2017 07:02 PM    Automatic  Active     Vlan21
192.168.143.12  015c.2e59.1477.34       Jun 29 2017 06:01 PM    Automatic  Active     Vlan21
192.168.143.12  01c0.d3c0.d249.4d       Jun 29 2017 06:26 PM    Automatic  Active     Vlan21
192.168.143.12  0184.9866.cfd9.4f       Jun 29 2017 06:49 PM    Automatic  Active     Vlan21
192.168.143.12  015e.e0c5.9b6d.f1       Jun 29 2017 11:05 AM    Automatic  Selecting  Vlan21
192.168.143.14  0198.0c82.9c00.97       Jun 29 2017 03:58 PM    Automatic  Active     Vlan22
192.168.143.14  0160.a4d0.7d77.ee       Jun 29 2017 06:59 PM    Automatic  Active     Vlan22
192.168.143.14  ac0d.1ba5.b83c          Jun 29 2017 05:50 PM    Automatic  Active     Vlan22
192.168.143.14  f49f.f319.2008          Jun 29 2017 04:28 PM    Automatic  Active     Vlan22
192.168.143.14  01d0.fccc.bcc2.bb       Jun 29 2017 06:29 PM    Automatic  Active     Vlan22
192.168.143.14  01c0.d3c0.d249.4d       Jun 29 2017 06:46 PM    Automatic  Active     Vlan22
192.168.143.14  019c.d917.33ec.08       Jun 29 2017 06:48 PM    Automatic  Active     Vlan22
192.168.143.14  01f4.f1e1.6ef8.d9       Jun 29 2017 06:56 PM    Automatic  Active     Vlan22
192.168.143.14  01d4.ae05.466e.bb       Jun 29 2017 03:49 PM    Automatic  Active     Vlan22
192.168.143.14  0114.5f94.62d0.eb       Jun 29 2017 03:37 PM    Automatic  Active     Vlan22
192.168.143.15  dc0b.34c8.5560          Jun 29 2017 04:16 PM    Automatic  Active     Vlan22
192.168.143.15  4040.a752.1bc2          Jun 29 2017 06:50 PM    Automatic  Active     Vlan22
192.168.143.15  0100.0af5.70ef.38       Jun 29 2017 03:41 PM    Automatic  Active     Vlan22
192.168.143.15  010c.b319.fad2.b1       Jun 29 2017 07:02 PM    Automatic  Active     Vlan22
192.168.143.15  806a.b017.8196          Jun 29 2017 06:28 PM    Automatic  Active     Vlan22
192.168.143.15  14a5.1a6f.8907          Jun 29 2017 05:10 PM    Automatic  Active     Vlan22
192.168.143.15  0110.02b5.b10c.1a       Jun 29 2017 06:29 PM    Automatic  Active     Vlan22
192.168.143.15  14a5.1aa5.8cf2          Jun 29 2017 03:43 PM    Automatic  Active     Vlan22
192.168.143.15  b0e0.3c0e.a8cc          Jun 29 2017 06:42 PM    Automatic  Active     Vlan22
192.168.143.15  24df.6aa2.b359          Jun 29 2017 05:02 PM    Automatic  Active     Vlan22
192.168.143.16  0118.cf5e.90d1.ef       Jun 29 2017 04:55 PM    Automatic  Active     Vlan22
192.168.143.16  8cc5.e1d3.f4b2          Jun 29 2017 04:26 PM    Automatic  Active     Vlan22
192.168.143.16  012c.4d54.9045.3d       Jun 29 2017 06:50 PM    Automatic  Active     Vlan22
192.168.143.16  0178.f882.b016.20       Jun 29 2017 06:43 PM    Automatic  Active     Vlan22
192.168.143.16  0164.db43.ef6b.c0       Jun 29 2017 06:57 PM    Automatic  Active     Vlan22
192.168.143.16  0184.b541.b44a.e2       Jun 29 2017 03:55 PM    Automatic  Active     Vlan22
192.168.143.16  017c.5cf8.9e3e.0f       Jun 29 2017 06:52 PM    Automatic  Active     Vlan22
192.168.143.16  94d8.5984.9b70          Jun 29 2017 06:16 PM    Automatic  Active     Vlan22
192.168.143.17  019c.d917.83d0.46       Jun 29 2017 04:32 PM    Automatic  Active     Vlan22
192.168.143.17  4cfb.4515.b24d          Jun 29 2017 04:36 PM    Automatic  Active     Vlan22
192.168.143.17  0184.55a5.adce.55       Jun 29 2017 05:20 PM    Automatic  Active     Vlan22
192.168.143.17  0104.c23e.86ca.ca       Jun 29 2017 06:58 PM    Automatic  Active     Vlan22
192.168.143.17  01dc.5360.2ee2.35       Jun 29 2017 06:17 PM    Automatic  Active     Vlan22
192.168.143.18  60e7.0180.83e9          Jun 29 2017 06:04 PM    Automatic  Active     Vlan22
192.168.143.18  a8c8.3a23.98ba          Jun 29 2017 05:17 PM    Automatic  Active     Vlan22
192.168.143.18  01dc.5360.2ee1.04       Jun 29 2017 07:02 PM    Automatic  Active     Vlan22
192.168.143.18  012c.d05a.3e7a.5a       Jun 29 2017 05:27 PM    Automatic  Active     Vlan22
192.168.143.18  1c8e.5cca.6017          Jun 29 2017 06:56 PM    Automatic  Active     Vlan22
192.168.143.18  014c.3488.9ffd.1c       Jun 29 2017 05:55 PM    Automatic  Active     Vlan22
192.168.143.18  0134.6987.3ff6.c5       Jun 29 2017 06:09 PM    Automatic  Active     Vlan22
192.168.143.18  74ba.db52.62af          Jun 29 2017 06:20 PM    Automatic  Active     Vlan22
192.168.143.20  7c7d.3dab.aeb1          Jun 29 2017 06:31 PM    Automatic  Active     Vlan23
192.168.143.20  01b4.ef39.b3f3.da       Jun 29 2017 03:42 PM    Automatic  Active     Vlan23
192.168.143.20  18e3.bcb8.d9db          Jun 29 2017 04:01 PM    Automatic  Active     Vlan23
192.168.143.20  015c.70a3.649c.e4       Jun 29 2017 06:47 PM    Automatic  Active     Vlan23
192.168.143.21  01e8.b4c8.8e30.58       Jun 29 2017 05:45 PM    Automatic  Active     Vlan23
192.168.143.21  0110.3b59.7060.0f       Jun 29 2017 06:06 PM    Automatic  Active     Vlan23
192.168.143.21  0128.5aeb.b673.56       Jun 29 2017 04:13 PM    Automatic  Active     Vlan23
192.168.143.21  0118.2195.2867.96       Jun 29 2017 06:24 PM    Automatic  Active     Vlan23
192.168.143.21  01e8.b4c8.7912.e5       Jun 29 2017 05:18 PM    Automatic  Active     Vlan23
192.168.143.21  0134.145f.1595.d3       Jun 29 2017 05:09 PM    Automatic  Active     Vlan23
192.168.143.21  0168.a3c4.f49d.6d       Jun 29 2017 05:02 PM    Automatic  Active     Vlan23
192.168.143.22  01b8.098a.be47.19       Jun 29 2017 05:05 PM    Automatic  Active     Vlan23
192.168.143.22  01a0.39f7.4e22.0f       Jun 29 2017 06:06 PM    Automatic  Active     Vlan23
192.168.143.22  0174.8d08.58a0.a3       Jun 29 2017 06:23 PM    Automatic  Active     Vlan23
192.168.143.23  01fe.f8ae.c88f.ac       Jun 29 2017 11:02 AM    Automatic  Selecting  Vlan23
192.168.143.23  01fe.f8ae.c88f.ad       Jun 29 2017 11:03 AM    Automatic  Selecting  Vlan23
192.168.143.23  017a.a3c4.f49d.6d       Jun 29 2017 11:06 AM    Automatic  Selecting  Vlan23
192.168.143.23  01fc.f8ae.c88f.ac       Jun 29 2017 06:05 PM    Automatic  Active     Vlan23

0 Helpful

Mark Malone
VIP Alumni
VIP Alumni
In response to Dean Romanelli

‎06-29-2017 08:52 AM

Hi

do the duplicates only occur on the wireless vlan range ?

if you trace the macs say from one ip as an example does it take you to 2 layer 2 ports ? or do they trace back to the same port

that's an early enough image too you may better on something newer like 3.6.6

0 Helpful

Dean Romanelli
Level 4
Level 4
In response to Mark Malone

‎06-29-2017 12:52 PM

Hi Mark,

Any 143 duplicates are in fact wireless.  142 is wired LAN, 143 is wireless LAN.  As for the firmware, unfortunately I do not have a smartnet so I can't upgrade firmware.

That said, I did find a rouge DHCP server out there earlier today, shut it down and enabled snooping everywhere. It was giving out 192.168.1 and 192.168.0 on vlan 1, and vlan 1 is 192.168.142.  Since 192.168.1 & 192.168.0 don't exist out there, I am thinking that explains the user reports of 169.254's and incorrect DNS: Because they were getting 192.168.1 or 192.168.0 intermittently.

We will see if they are stable now.  If so, I am thinking the duplicates are cosmetic, especially since most of them are excluded already.

Thanks All.

0 Helpful

Mark Malone
VIP Alumni
VIP Alumni
In response to Dean Romanelli

‎06-30-2017 10:04 AM

ok so that would definitely cause it another dhcp server giving out same address pool and would explain why you were seeing duplicates that were already excluded , ye hopefully that's it and stays stable

0 Helpful

STEPAN JANKOVIC
Level 1
Level 1

‎06-29-2017 02:57 AM

Hello,

I think that you should change your design and try to use external DHCP server. DHCP server on Cisco switches and other devices is meant for only marginal and emergency use. It is not a good practice to rely on it. It is better to invest time into configuration of some standard, computer based DHCP service.

Regards

Stepan

Dean Romanelli
Level 4
Level 4
In response to STEPAN JANKOVIC

‎06-29-2017 07:59 AM

Stepan,

I agree with you wholeheartedly. However, it was a management decision above my head, so I don't have a choice.

What if I split the load by putting wired staff and wifi staff on one switch, while putting wifi guest and voip on another switch?

Thanks.

0 Helpful

Dennis Mink
VIP Alumni
VIP Alumni
In response to Dean Romanelli

‎06-30-2017 06:30 PM

Most times you find managements technical expectations are not in sync with technical capabilities of the acquired hardware. 

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