07-13-2020 09:49 AM - last edited on 01-08-2024 02:58 AM by Translator
Hi Teck People
i am facing on strang issue in my Distribution 9600 if some body face this issue guide me please
IP phone is not getting IP Address from Cisco 96000 DHCP Server but Serve is showing the binding:
DHCP SERVER Binding:
Switch-1A#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
Bindings from VRF pool Telephone:
IP address Client-ID/ Lease expiration Type State Interface
Hardware address/
User name
172.17.30.14 01a4.b239.4805.6f Infinite Automatic Active Vlan67
Switch-1A#
DHCP Server Confguration
ip dhcp use vrf connected
ip dhcp excluded-address vrf Telephone 172.17.30.1 172.17.30.2
ip dhcp pool TPH-67
vrf Telephone
network 172.17.30.0 255.255.255.0
default-router 172.17.30.1
option 150 instance 1 ip 172.17.50.5
option 150 instance 2 ip 172.17.50.6
lease infinite
ip dhcp snooping information option allow-untrusted
can somebody suggest
Solved! Go to Solution.
07-13-2020 12:48 PM
Hi George,
Thanks for reply
the actula vlan is 67
As per my understanding the issue is that may be i am wrong.
ARP entry is not coming into the VRF Table for specifice vlan from Access Switch to distribution.
Access and distribution are vtp transparent. so we need to allow same vlan on trunk from access to distribution and vice versa. may be i am wrong
07-13-2020 01:25 PM
Hello,
just to be sure (since the switches are in transparent mode): does Vlan 67 actually exist on both switches (sh vlan) ?
07-13-2020 01:39 PM - last edited on 01-08-2024 03:09 AM by Translator
vlan exist on access and distirbution
distribution switch
vlan 67
name Telephone
!
vlan 911
name MGMT
access switch
vlan 67
name Telephone
!
vlan 911
name MGMT
07-13-2020 11:01 PM
Hello,
do you have DHCP snooping enabled on the access switch ? Better post the full running configs of both the access and distribution switches, otherwise we will keep asking questions...
07-13-2020 11:11 PM - last edited on 01-08-2024 03:13 AM by Translator
07-13-2020 11:15 PM - last edited on 01-08-2024 03:13 AM by Translator
i didnt give u latest config just miss the following config in access switch
Access port configuration on the Access switch
int g1/0/1
switchport mode access
switchport access voice vlan 67
spanning-tree portfast default
07-13-2020 11:50 PM
Hello,
for the sake of testing, try and make the port channel part of the VRF:
ip vrf forwarding Telephone
07-13-2020 11:54 PM - last edited on 01-08-2024 03:14 AM by Translator
thanks George for your reply
Portchannel in Distribution is layer 2 portchannel and same is also in Access Switch.
So L2 Port channel will accep this
ip vrf forwarding Telephone
thanks
07-13-2020 11:52 PM
on the access switch, i do not see VLAN created, create VLAN 67 and 911 and test
07-13-2020 11:58 PM
thanks balaji.
let me check this also, but in that case IP Phone mac should not bind with the VLAN Telephone DHCP.
thanks for your answer
07-14-2020 05:08 AM - last edited on 01-08-2024 03:59 AM by Translator
Hi balaji
configuration is correct. you can see the below output
Bindings from VRF pool Telephone:
IP address Client-ID/ Lease expiration Type State Interface
Hardware address/
User name
172.16.30.11 01a4.b239.4805.6f Jul 14 2020 12:06 PM Automatic Selecting Vlan67
the issue is very strange. DHCP server is showing the correct entry but the client is without IP address
---------------------------------------------------------------------------------
-------------------------------------------
Vlan Mac Address Type Ports
---- ----------- -------- -----
67 a4b2.3948.056f DYNAMIC Po22
911 bc5a.5607.414c DYNAMIC Po22
Total Mac Addresses for this criterion: 2
============
DHCPD: table id 3 = vrf Telephone
*Jul 14 12:10:26.167: DHCPD: interface = Vlan67
*Jul 14 12:10:26.167: DHCPD: class id 436973636f2053797374656d732c20496e632e2049502050686f6e652043502d3738323100
*Jul 14 12:10:26.167: DHCPD: FSM state change INVALID
*Jul 14 12:10:26.167: DHCPD: Workspace state changed from INIT to INVALID
*Jul 14 12:10:26.168: DHCPD: Found previous server binding
*Jul 14 12:10:26.168: DHCPD: Sending DHCPOFFER to client 01a4.b239.4805.6f (172.16.130.12).
*Jul 14 12:10:30.172: DHCPD: Reload workspace interface Vlan67 tableid 3.
*Jul 14 12:10:30.172: DHCPD: Sending notification of DISCOVER:
*Jul 14 12:10:30.172: DHCPD: htype 1 chaddr a4b2.3948.056f
*Jul 14 12:10:30.172: DHCPD: circuit id 000400432316
*Jul 14 12:10:30.172: DHCPD: table id 3 = vrf Telephone
*Jul 14 12:10:30.172: DHCPD: interface = Vlan67
*Jul 14 12:10:30.172: DHCPD: class id 436973636f2053797374656d732c20496e632e2049502050686f6e652043502d3738323100
*Jul 14 12:10:30.172: DHCPD: Sending notification of DISCOVER:
*Jul 14 12:10:30.172: DHCPD: htype 1 chaddr a4b2.3948.056f
*Jul 14 12:10:30.172: DHCPD: circuit id 000400432316
*Jul 14 12:10:30.172: DHCPD: table id 3 = vrf Telephone
*Jul 14 12:10:30.172: DHCPD: interface = Vlan67
*Jul 14 12:10:30.172: DHCPD: class id 436973636f2053797374656d732c20496e632e2049502050686f6e652043502d3738323100
*Jul 14 12:10:30.172: DHCPD: FSM state change INVALID
*Jul 14 12:10:30.172: DHCPD: Workspace state changed from INIT to INVALID
*Jul 14 12:10:30.172: DHCPD: Found previous server binding
*Jul 14 12:10:30.172: DHCPD: Sending DHCPOFFER to client 01a4.b239.4805.6f (172.16.130.12).
07-14-2020 05:09 AM
i have two seprate cluster for distributions. so this the second cluster and
ip assigned to client is 172.16.130.12)
*Jul 14 12:10:30.172: DHCPD: Sending DHCPOFFER to client 01a4.b239.4805.6f (172.16.130.12).
07-14-2020 06:59 AM
Hello,
what do you mean by second cluster ? On which Vlan is that second cluster ? Simply post the full, unmodified running configurations of the devices involved.
07-14-2020 12:32 AM - last edited on 01-08-2024 03:14 AM by Translator
Hello,
where in the access switch configuration you have posted do we see the below:
int g1/0/1
switchport mode access
switchport access voice vlan 67
spanning-tree portfast default
Are the configurations you have posted the ones of the switches actually in use, did you modify the configurations before you posted them ?
07-14-2020 01:48 AM - last edited on 01-08-2024 03:16 AM by Translator
everything is same.
i have another Distribution cluster with same configuation.
dhcp event
infinite
Jul 14 08:49:32.159: DHCPD: Sending notification of DISCOVER:
*Jul 14 08:49:32.159: DHCPD: htype 1 chaddr a4b2.3948.056f
*Jul 14 08:49:32.159: DHCPD: circuit id 000400432316
*Jul 14 08:49:32.159: DHCPD: table id 3 = vrf Telephone
*Jul 14 08:49:32.159: DHCPD: interface = Vlan67
*Jul 14 08:49:32.159: DHCPD: class id 436973636f2053797374656d732c20496e632e2049502050686f6e652043502d3738323100
*Jul 14 08:49:32.159: DHCPD: Sending notification of DISCOVER:
*Jul 14 08:49:32.159: DHCPD: htype 1 chaddr a4b2.3948.056f
*Jul 14 08:49:32.159: DHCPD: circuit id 000400432316
*Jul 14 08:49:32.159: DHCPD: table id 3 = vrf Telephone
*Jul 14 08:49:32.159: DHCPD: interface = Vlan67
*Jul 14 08:49:32.159: DHCPD: class id 436973636f2053797374656d732c20496e632e2049502050686f6e652043502d3738323100
*Jul 14 08:49:32.159: DHCPD: FSM state change INVALID
*Jul 14 08:49:32.159: DHCPD: Workspace state changed from INIT to INVALID
*Jul 14 08:49:32.159: DHCPD: Found previous server binding
*Jul 14 08:49:32.159: DHCPD: Sending DHCPOFFER to client 01a4.b239.4805.6f (172.16.130.11).
*Jul 14 08:49:36.163: DHCPD: Reload workspace interface Vlan67 tableid 3.
*Jul 14 08:49:36.163: DHCPD: Sending notification of DISCOVER:
*Jul 14 08:49:36.163: DHCPD: htype 1 chaddr a4b2.3948.056f
*Jul 14 08:49:36.164: DHCPD: circuit id 000400432316
*Jul 14 08:49:36.164: DHCPD: table id 3 = vrf Telephone
*Jul 14 08:49:36.164: DHCPD: interface = Vlan67
*Jul 14
No arp entry and
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