Dynamic interface ip addtress setted to 0.0.0.0 what happens?
hi guys,
what happen if i set the IP address of a dynamic interface to 0.0.0.0?
can I associate a WLAN to this interface?
will WLAN+Dyn interface work as a layer 2 VLAN?
thx
hi Dan
thx for your reply.
this is what i would like happen. I explain better.
I need a wireless guest LAN completely separated from my network with dhcp on the same subnet but this subnet does'n have a private L3 address because is connected directly to internet (clients get public ip addresses) but i'm not sure it can work with controller.
Similar Messages
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Dynamic interface port assignment
Good Day,
I am setting up a 4402 (50 ap license ver 5.0) that will manage about 40 aps. Following the Cisco docs, I have created two ap manager intefaces for load balancing. Each physical port is attached to one of two Cat 6509s (no lag).
Our network ultimately connects to a router (over which I have no control) with six 100 mps ports each representing a subnet/vlan. So my intent is to create six dynamic interfaces each coresponding to a vlan for load balancing and bandwidth optimization.
My question regards assinging each dynamic interface to a physical port. Simple logic would have me assinging 3 interfaces to port #1 and three to port #2, then assigning a proportionate number of aps to each interface.
Is it that simple, or are there other considerations.
ThanksYou're correct. Creating a dynamic interface for each VLAN is exactly what you need to do. This will load-balance the traffic from the multiple VLANs across your links.
I would highly recommend that you consider LAGging the two uplinks. It provides better load-balancing and better redundancy. Since you're connecting to a 6509, you can LAG between two blades for redundancy purposes.
Whether you LAG or not is completely up to you, of course. But you seem to be good to go if you want to leave them unLAGged.
Jeff -
I wonder why we need Dynamic Interfaces. I have created two WLANs. One is WPA2-Enterprise obtaining vlan id's per user from Radius server and the other WEP wlan for guest users whose traffic should go to a specific guest vlan. I am using an external DHCP server and configured WLC not to proxy dhcp requests and to act as a bridge.
I had to create dynamic interfaces on WLC (we are using 5508 with software version 7) for all the VLANs which radius server returns. I could make it with only defining the dynamic interfaces and entering 0.0.0.0 for ip addresses.
For the other WLAN with WEP, I have to enter and IP for the dynamic interface to work. I am not sure if this is a requirement or my misconfiguration, but I do want a way not to set an IP address for the dynamic interface. I do not want to waste addresses and also do not want the clients to be able to access wlc through that IP address.
I appreciate any comment on why I need IP addresses for dynamic interfaces.Vadood... The WLC does use that IP address as it needs to have layer 2 connection to any subnet it will place users on. Even is your doing AAA override, the radius tell the WLC that that device needs to be on vlan x and the WLC will put that device on vlan x, but if the WLC has no IP address on that subnet, well then the communication stops there. The user will never get an IP address if using dhcp or if the device has a static, the WLC has no way to communicate to that subnet.
By the way, users can't access the dynamic interface by default. You have to enable that. But then again, they can try to access the management interface also, unless you disable globally management over wireless.
Sent from Cisco Technical Support iPhone App -
Dynamic interface: dynamic AP management + NAT enabled
Hello,
I would like to ask for I have not found any supporting documents with regard to my concern.
I would like to deploy our 2504 WLC connecting 600 Series OEAPs to it using a dynamic interface with dynamic AP management and NAT enabled disabling the management interface's dynamic AP management and NAT. Apparently, I was not able to connect the OEAPs to the WLC. But if I change the setting in using the management interface instead of my created dynamic interface, with dynamic AP management and NAT enabled, the OEAP successfully joins the controller.
Are there any solutions that I could use a dynamic interface as ap-manager with NAT or is it that the management interface can only be used?
Cheers!IIRC, you need the OEAP to join to the management address since that is where you will be entering the nat'd address. So using a dynamic interface will not work and really can only work when APs are local mode.
Sent from Cisco Technical Support iPhone App -
Dynamic interface with ip 0.0.0.0
Hi gusy,
what happens if i set yhe ip address of a dyn interface to 0.0.0.0 and associate this interface to a WLAN?
will WLAN+this dynamic interface work as a layer 2 VLAN?
thx....
Ale.No,in fact I dont think you put all 0.0.0.0 on a dynamic interface ,...
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Max # of dynamic interfaces on 4404 WLC
Can anyone tell me if there is a limit to how many dynamic interfaces I can create on a 4404 WLC?
I know that I can only have 16 SSIDs, so I have set up one SSID for my private network and am using AAA Override and configured my radius server to assign the different VLANs for each group. I have to create a dynamic interface for each individual VLAN and I just want to know if there is any kind of hard limit for the number of dynamic interfaces I can have so I don't run into a potential problem down the road.
TIA,
DeannaI was able to verify that you only can create up to 513 dymanic interfaces. This of course does not include your management, ap-manager or VIP.
Hope this answers your question... it did for me... now I know! -
Cannot contact Non-native dynamic interfaces on WLC 4402
Hi,
In my company we are recently planning to get a DMZ anchor for Guest WLAN. Our setup is as following
We have two 5508 WLCs in inside corporate network which serves for the corporate wlan. Recently we put one 4402 in DMZ in LAG mode. Two SSID has been created in 4402 namely guest and consultant. We have mobility configured perfect between these three. For the the two ssids the 4402 is the anchor. We have created sub interfaces in ASA for management and two WLANs. The port channel is also configured proper with the native vlan for management and allowing all three vlans through it. The concern is that we cannot ping the untagged dynamic interface of WLC. The WLAN clients are getting DHCP ip perfectly on each ssid, I mean in different networks. But the clients cannot reach the gateway which is the subinterface of ASA. If I am using the webauth I am not getting redirected to the authentication page. but if I set the security to none (both L2 and L3) I can reach up to the corresponding dynamic interface and not beyond that.
Below are my configuration details
At switch side
interface Port-channel1
switchport trunk encapsulation dot1q
switchport trunk native vlan 177
switchport trunk allowed vlan 177-180
switchport mode trunk
interface GigabitEthernet2/0/26
switchport trunk encapsulation dot1q
switchport trunk native vlan 177
switchport trunk allowed vlan 177-180
switchport mode trunk
channel-group 1 mode on
interface GigabitEthernet1/0/26
switchport trunk encapsulation dot1q
switchport trunk native vlan 177
switchport trunk allowed vlan 177-180
switchport mode trunk
channel-group 1 mode on
WLC configurations
(Cisco Controller) >show interface summary
Interface Name Port Vlan Id IP Address Type Ap Mgr Guest
ap-manager LAG untagged 192.168.7.3 Static Yes No
management LAG untagged 192.168.7.2 Static No No
qd-consultant LAG 179 192.168.9.254 Dynamic No No
qd-guest LAG 178 192.168.8.254 Dynamic No No
qd-test LAG 180 192.168.10.254 Dynamic No No
service-port N/A N/A 0.0.0.0 DHCP No No
virtual N/A N/A 192.0.2.1 Static No NoYour configuration looks good except you should assign an ip address to the service port. Never leave that at 0.0.0.0. Change that to an ip address that is non routable in your network.
Now for your issue. Have you tried plugging in a laptop to the dmz switch in those vlans to see if it works wired. Since these are new subnets, are you sure they are being NAT'd to your public address. Check that first and let us know. The WLC should be able to ping the gateway and out into the Internet if things are setup right in the dmz.
Sent from my iPhone -
Doubt with Dynamic Interfaces and VLANs
Hello.
I am trying to get wirelles clientes and APs to be on the same VLAN/subnet, now is working with management interface on my WLC 5508. My problem comes up when I change them to a new dynamic interface.
Before any change:
VLAN: 8
Management Interface IP: 192.168.9.2/23
Gateway: 192.168.8.1
DHCP Server: 192.168.8.2
WLAN SSID linked to Managment interface: Ray123
APs on VLAN 8 and subnet static IP range192.168.9.0/23
There is no dynamic interface.
After changes.
VLAN: 0
Management Interface: 192.168.6.2/23
Gateway: 192.168.6.1
DHCP Server: 192.168.6.2
Dynamic interface name: Wireless-1
VLAN: 8
Management Interface IP: 192.168.9.2/23
Gateway: 192.168.8.1
DHCP Server: 192.168.8.2
WLAN SSID linked to Dynamic interface: Ray123
APs still on VLAN 8 and subnet static IP range192.168.9.0/23
After all this done i can see by cdp neighbors all my APs i can ping them and management interface too, but APs are not registered, no clients too.
According to this guide:
http://www.cisco.com/en/US/tech/tk722/tk809/technologies_configuration_example09186a00805e7a24.shtml
Dynamic interfaces and APs should be on the same VLAN.
But this another guide states the opposite:
http://www.cisco.com/en/US/docs/wireless/controller/7.0/configuration/guide/c70mint.html
"Set the APs in a VLAN that is different from the dynamic interface configured on the Controller. If the APs are in the same VLAN as the dynamic interface, the APs are not registered on the Controller and the 'LWAPP discovery rejected' and 'Layer 3 discovery request not received on management VLAN' errors are logged on the Controller"
I cant understand why VLANs for APs and dynamic interfaces should be on different, it has no sense to configure a vlan intended for APs which shouldnt be on the same vlan.
Please tell me what is wrong.
Thanks in advance.You have to tell the APs where the WLC lives now, 192.168.6.2.
You can do this in the following ways:
Manual Prime the APs
option 43
dns
ip forward udp 5246
move the aps to the same vlan as the management interface let them join and then chnage the vlan
"Satisfaction does not come from knowing the solution, it comes from knowing why." - Rosalind Franklin
"I'm in a serious relationship with my Wi-Fi. You could say we have a connection." -
Cisco Prime Infrastructure is a damned nightmare of browser bugs (some features work in IE8, some in IE9, and some only in Firefox). And I am not sure if what I am experiencing is a browser bug - or a real bug - or something that I was able to do before and can't any more? I would love for someone to either explain why this is happening to me, or reproduce the bug!
I'm running Prime 2.1.1. I am doing this ...
Configure > Controller Template Launchpad
System > Dynamic Interface
Select a command > Add interface (GO)
Enter all the properties - roll to the bottom of the page, and click Apply to Controllers
I have four controllers. And normally I would add an interface for each controller. But I can only create two out of the four. It doesn't matter which two I choose. When I click Add under Manage Interfaces for the third controller, I cannot click the Done button to apply it (see screenshot, attached). I have found that if I change the VLAN to something else, it will let me save it. But ... why? I went back and reviewed all of my existing interface templates and I am not doing anything different. Although, they were all created a long while ago using WCS 7.x.
Any help, guidance, or confirmation of insanity would be appreciated.
-Steve BallantyneI doubt I will get any hits on this here but I always try. I opened a TAC case. I will come back and comment on whatever they find.
-
ISE and WLC dynamic interface group assignment ?
I have a somewhat large deployment coming up with several WLC dynamic interfaces assigned to an interface group, replicated across for multiple sites. I understand that ISE can return the VLAN ID to the WLC to place the client in, but if I'm using interface groups, this seems to negate the usefulness of the interface group to load clients across multiple VLANs. Not only that, but with the number of dynamic interfaces (VLAN ID's), multiplied by the number of sites, would seem to be overwhelming on the ISE side policy configuration.
Is it possible for ISE to return an Interface name/group to the WLC instead of just a VLAN ID ?
TIAI understand that WLC 7.2 code can now accept the interface group name as a AAA override, which is great, but it doesn't specify the AAA source (ISE vs. ACS).
This is the example I'm questioning: (they use the VLAN ID only, instead of an interface name)
http://www.cisco.com/en/US/products/ps10315/products_tech_note09186a0080bba10d.shtml#topic17
Edit:
Found the correct Attribute Under "Adv. Attribute Settings" in the Airspace Authorization Profiles (Airespace:Airespace-Interface-Name). -
Mgmt Via Dynamic Interface not working on 5505 version 7.2.111.3
Folks,
I have posted this question a couple of times on the forum but did not get a solution. I am trying to manage my 5508 controller from a dynamic interface which is assigned to port 7 of the controller. I have a switch connected to that port which has a PC on the same subnet as the dynamic interface. From the PC, I can ping the dynamic interface IP Address, but can not telnet,SSH,http or https to it. There is no clear doc that specifics how to effectly use the command "config network mgmt-via-dynamic-interface" command.
Mgmt Via Wireless Interface................. Enable
Mgmt Via Dynamic Interface.................. Enable
Interface Name Port Vlan Id IP Address Type Ap Mgr Guest
173 7 173 172.16.101.100 Dynamic Yes No
management 1 172 172.16.100.100 Static Yes No
service-port N/A N/A 0.0.0.0 DHCP No No
virtual N/A N/A 1.1.1.1 Static No No
7 Normal Forw Enable Auto 1000 Full Up Enable N/A 1000BaseTX
Any guidence would be highly appreciated.Im having a similar issue and have 2 TAC cases open.
TAC CASE#1: issue is that even when disbaled I can still access the dynmic interface via HTTPS/HTTPS/TELNET/SSH. But this is on a WISM1.
Thanks a lot for your quick and prompt response, I see that there is an internal Bug with an ID CSCty32586.
I see that the bug is fixed told be fixed in 7.0.230.0, but it’s not fixed. The bug is fixed in 7.2.x version.
I understand that you are using Wism on which 7.1.x version and above is not supported.
As 7.0.235.3 is released recently to overcome some of the changes and to fix some of the Bugs with older version on these devices.
Kindly try to upgrade the software version of the WLC to 7.0.235.3 and check the compatibility.
Please do let me know in case of any concerns and I will be glad to assist you.
TAC CASE#2: Just like you I can not access the dynamic interface. Still working that one .. The holiday dropped when I just opened that case.
"Satisfaction does not come from knowing the solution, it comes from knowing why." - Rosalind Franklin
"I'm in a serious relationship with my Wi-Fi. You could say we have a connection." -
WLC DHCP Settings - Under Dynamic Interface configuration
Hi Guys,
If I have a dynamic interface that is connected to a subnet where the router interfaces have DHCP servers configured under the helper address commands, do I need to configure the DHCP fields under the dynamic interface configuration?
I have helper address configured on the connected routers AND these fields configured with the same DHCP servers.
Just wondering if I can take the IPs out of the WLC configuration?
Many thx indeed,
KenKen, the DHCP address under the dynamic interface, is the address the WLC will unicast the DHCP request to when a client tries to use that interface. Under normal operation this address is needed. There is a way to get the WLC to bridge the packet to the wire so that it is a broadcast instead of a unicast packet. CLI command is config dhcp proxy disable.
But I do believe that even if you issue the CLI command, the software wants the DHCP address listed under the dynamic interface.
HTH,
Steve -
Adding (dynamic) interfaces to WLC 2504 causes loss of network
I'm trying to add a new dynamic interface, that I will tie a specific WLAN to so that clients on that WLAN is in the correct vlan. After adding it I loose connectivity both to the main management address (10.99.0.60) and to the ip address of the dynamic interface (10.99.12.4). In fact, the dynamic interface address responds and prompts me to login, but after doing so all I get is a blank page. Here's the two interfaces pulled from the CLI - what am I doing wrong?
And oh, not adding an IP to the dynamic interface makes it impossible to use within a WLAN.
Interface Name................................... management
MAC Address...................................... c0:8c:60:c7:99:00
IP Address....................................... 10.99.0.60
IP Netmask....................................... 255.255.255.0
IP Gateway....................................... 10.99.0.1
External NAT IP State............................ Disabled
External NAT IP Address.......................... 0.0.0.0
VLAN............................................. 31
Quarantine-vlan.................................. 0
Active Physical Port............................. 1
Primary Physical Port............................ 1
Backup Physical Port............................. Unconfigured
DHCP Proxy Mode.................................. Global
Primary DHCP Server.............................. 10.99.0.1
Secondary DHCP Server............................ Unconfigured
DHCP Option 82................................... Disabled
IPv4 ACL......................................... Unconfigured
mDNS Profile Name................................ Unconfigured
AP Manager....................................... Yes
Guest Interface.................................. No
L2 Multicast..................................... Enabled
Interface Name................................... lan
MAC Address...................................... c0:8c:60:c7:99:04
IP Address....................................... 10.99.12.4
IP Netmask....................................... 255.255.252.0
IP Gateway....................................... 10.99.12.1
External NAT IP State............................ Disabled
External NAT IP Address.......................... 0.0.0.0
VLAN............................................. 33
Quarantine-vlan.................................. 0
NAS-Identifier................................... mob-wlc
Active Physical Port............................. 1
Primary Physical Port............................ 1
Backup Physical Port............................. Unconfigured
DHCP Proxy Mode.................................. Global
Primary DHCP Server.............................. Unconfigured
Secondary DHCP Server............................ Unconfigured
DHCP Option 82................................... Disabled
IPv4 ACL......................................... Unconfigured
mDNS Profile Name................................ Unconfigured
AP Manager....................................... No
Guest Interface.................................. NoSo take a look at this. I have the dynamic interface used in wlan 2 (mytestssid as shown above). Now the management address, 10.99.0.60 cant be reached:
Nmap scan report for 10.99.0.60
Host is up.
PORT STATE SERVICE
22/tcp filtered ssh
443/tcp filtered https
After removing wlan 2 and the dynamic interface, mgmt access starts to work again:
config wlan disable 2
config wlan delete wlan 2
config interface delete lan
Nmap scan report for 10.99.0.60
Host is up (0.0037s latency).
PORT STATE SERVICE
22/tcp open ssh
443/tcp open https
So... here's me adding the dynamic interface in cli AGAIN:
WLAN ID WLAN Profile Name / SSID Status Interface Name
1 someotherssid / someotherssid Enabled management
(Cisco Controller) config> interface create lan 33
(Cisco Controller) config> interface address dynamic-interface lan 10.99.12.4 255.255.252.0 10.99.12.1
(Cisco Controller) >config wlan disable 1
(Cisco Controller) >config wlan interface 1 lan
(Cisco Controller) >config wlan enable 1
Voila, management access lost again:
Nmap scan report for 10.99.0.60
Host is up.
PORT STATE SERVICE
22/tcp filtered ssh
443/tcp filtered https
This time, there's no physical port assigned to the dynamic interface 'lan':
Interface Name Port Vlan Id IP Address Type Ap Mgr Guest
lan - 33 10.99.12.4 Dynamic No No
management 1 31 10.99.0.60 Static Yes No
virtual N/A N/A 1.1.1.1 Static No No
Adding that:
(Cisco Controller) config interface port lan 1
Interface Name Port Vlan Id IP Address Type Ap Mgr Guest
lan 1 33 10.99.12.4 Dynamic No No
Still no management access..:
Nmap scan report for 10.99.0.60
Host is up.
PORT STATE SERVICE
22/tcp filtered ssh
443/tcp filtered https
For reference, the detailed interface config (which clearly shows that 'management' should be ap mgmt.. and dynamic interface 'lan' shouldn't (and thus shouldn't affect it - RIGHT?)):
Interface Name................................... lan
MAC Address...................................... c0:8c:60:c7:99:04
IP Address....................................... 10.99.12.4
IP Netmask....................................... 255.255.252.0
IP Gateway....................................... 10.99.12.1
External NAT IP State............................ Disabled
External NAT IP Address.......................... 0.0.0.0
VLAN............................................. 33
Quarantine-vlan.................................. 0
NAS-Identifier................................... mob-wlc
Active Physical Port............................. 1
Primary Physical Port............................ 1
Backup Physical Port............................. Unconfigured
DHCP Proxy Mode.................................. Global
Primary DHCP Server.............................. Unconfigured
Secondary DHCP Server............................ Unconfigured
DHCP Option 82................................... Disabled
IPv4 ACL......................................... Unconfigured
mDNS Profile Name................................ Unconfigured
AP Manager....................................... No
Guest Interface.................................. No
Interface Name................................... management
MAC Address...................................... c0:8c:60:c7:99:00
IP Address....................................... 10.99.0.60
IP Netmask....................................... 255.255.255.0
IP Gateway....................................... 10.99.0.1
External NAT IP State............................ Disabled
External NAT IP Address.......................... 0.0.0.0
VLAN............................................. 31
Quarantine-vlan.................................. 0
Active Physical Port............................. 1
Primary Physical Port............................ 1
Backup Physical Port............................. Unconfigured
DHCP Proxy Mode.................................. Global
Primary DHCP Server.............................. 10.99.0.1
Secondary DHCP Server............................ Unconfigured
DHCP Option 82................................... Disabled
IPv4 ACL......................................... Unconfigured
mDNS Profile Name................................ Unconfigured
AP Manager....................................... Yes
Guest Interface.................................. No
L2 Multicast..................................... Enabled
By the way, the switchport of my (C3560G) doesnt specifically allow some VLANs - meaning they allow all vlans:
interface GigabitEthernet0/28
description cisco_wlc
switchport trunk encapsulation dot1q
switchport mode trunk
And the vlans in question are present:
31 enet 100031 1500 - - - - - 0 0
32 enet 100032 1500 - - - - - 0 0
33 enet 100033 1500 - - - - - 0 0
34 enet 100034 1500 - - - - - 0 0 -
Failed to unmarshal interface java.util.Set
I am trying to get all mbeans using getAllMBeans() method after
getting MBeanHome successfully. The method fails with the following
error.
Any clues ?
Thanks
karthik
>>>>
weblogic.rmi.extensions.RemoteRuntimeException: Unexpected Exception -
with nested exception:
[java.rmi.UnmarshalException: failed to unmarshal interface
java.util.Set; nested exception is:
java.io.InvalidClassException: javax.management.MBeanAttributeInfo;
local class incompatible: stream classdesc serialVersionUID =
7043855487133450673, local class serialVersionUID =
8644704819898565848]
at weblogic.management.internal.AdminMBeanHomeImpl_WLStub.getAllMBeans(Unknown
Source)I am trying to get all mbeans using getAllMBeans() method after
getting MBeanHome successfully. The method fails with the following
error.
Any clues ?
Thanks
karthik
>>>>
weblogic.rmi.extensions.RemoteRuntimeException: Unexpected Exception -
with nested exception:
[java.rmi.UnmarshalException: failed to unmarshal interface
java.util.Set; nested exception is:
java.io.InvalidClassException: javax.management.MBeanAttributeInfo;
local class incompatible: stream classdesc serialVersionUID =
7043855487133450673, local class serialVersionUID =
8644704819898565848]
at weblogic.management.internal.AdminMBeanHomeImpl_WLStub.getAllMBeans(Unknown
Source) -
Hello,
Is it possible to have a dynamic interface declaration like you can have a dynamic object declaration?
For an object:
data: lo_object type ref to object.
create object lo_object type (lv_object_name).
Is this in some way possible to do with an interface? I need to do this for an interface at runtime.
Gr,
JaronYou can create data of a dynamically given reference type (which may be an interface) and move the object reference to it.
Something like so:
DATA:
my_obj TYPE REF TO object,
lr_data TYPE REF TO data.
FIELD-SYMBOLS: <fs> TYPE ANY.
CREATE OBJECT my_obj TYPE my_object_type.
TRY.
CREATE DATA lr_data TYPE REF TO (some_interface_type_name).
ASSIGN lr_data->* TO <fs>.
<fs> ?= my_obj.
CATCH cx_sy_move_cast_error.
CATCH cx_sy_create_data_error.
ENDTRY.
Basically, the assignment tests if my_obj is an instance of the type named some_interface_type_name.
Hope this helps,
Sebastian
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