10.4.9 and DHCP
DHCP is running on a new 10.4.9 Server.
It does not release old ips. It is set to 1 day release, the machines get the new ip, but the old ip is still associated with the machine, according to DHCP in server admin, restart of server doesn't fix it.
We are running 2 gig nics at x.x.0.245 and .246. This is what it was set up before the server, but we had 2 separate servers...
We set en0 to be ip scheme of x.x.1.1.->.5.255, and they all get used up in a couple of days.
Does this look right? Is it the setup or 10.4.9?
Is there a preference file that can be deleted to forcefully release all ips for DHCP?
Thank you.
/var/db/dhcpd_leases contains all leases handed out from the dynamic pool. You can safely (in my experience) delete the whole file or individual entries.
The IP addresses are stored there even after the lease has expired (hence increasing number of "Current DHCP Clients" in the Overview pane). However, this behaviour of bootpd is harmless and allows 'virtual' static IPs, even if the lease time is short, as bootpd will still try to re-assign the same IP at every opportunity, using the expired info in this file. From the bootpd man page...
"The server tries to give the same address back to a client by remembering
the binding even after it has expired. The server removes an expired
lease entry only when it runs out of addresses, and needs to reclaim an
address in order to fulfill a new request.
http://developer.apple.com/documentation/Darwin/Reference/ManPages/man8/bootpd.8 .html
-david
Similar Messages
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Not sure if I am doing this right. This is my first time in the support community.
I imagine what I put in my heading was supposed to go in here.
I want to use Back to my mac. When I try to turn it on, it says "Back to my mac may be slow because more than one device on your network is providing network services. Turn off NAT and DHCP on one of the devices and try again. See the documentation that came with your device for information about turning off network services"
Does anyone know how I do this? I contacted my ISP (Telus in Canada) and they did not know anything (not that they usually do).Why do ISPs insist upon making things so difficult for their customers?
If you cannot get them to understand that you would prefer to use your own router over their piece of cheap junk, perhaps the information in the following will be useful:
http://keithbalomben.wordpress.com/2012/03/29/telus-actiontec-v1000h-hacks-and-i nformation/
Scroll down to DHCP Settings
You will need to log in with proper "technician" credentials. They are provided in the above link as
Username: tech
Password: t3lu5tv
... but these may or may not work. Try it, and if you cannot get anywhere at least now you know what to ask Telus to do in return for your business. -
Solaris 10 zone configuration with sysidcfg and dhcp and hostname
Hi
Excuse me if I look like a n00b... it's probably because I'm a n00b.
I've been struggling in the dark for more than 2 days now and I'm wondering if I'm thinking about this all wrong...
I have stand-alone server where I need to run zones. I want to create zones and automagically configure them at boot (read: by running a script). So here's what I need...
A zone
starting from unconfigured state
whose hostname is not the same as the zone name
using corporate DHCP to get its IP address
with DNS config coming from the DHCP server
registering its address the DNS
with a preconfigured root password
(I don't own the corporate DHCP or DNS servers, I can't put my own DHCP or DNS servers on the network.)
I would lke to create the zone, throw some config at it, then boot the zone and walk away. I am using zones with exclusive-IP. I can construct the zones and manually configure them once they're started to have DHCP, my own name, registered IP address with DNS and everything else I have specified above. But I don't want to do it manually...
Sysidcfg seems to do some of what I want but not entirely.
In sysidcfg I can set the root_password, the primary interface using DHCP, DNS server. I can't set a hostname in sysidcfg AND use configure it for DHCP. So the hostname is not what I want it to be after the zone is started and ready to go. The DHCP server is providing the DNS configuration, Solaris does not seem to honour it, but i'll ignore that for the moment.
I have tried various combinations of using sysidcfg, /etc/nodename, /etc/hostname.+interface+ and /etc/dhcp.+interface+ but I can't find any combination that actually works.
I can write to the zonestorage/etc/nodename to set the nodename, that works. But it does not match the DHCP address, so I get prompted for a new name service because it can't find a DNS entry for the name.
I can write to the zonestorage/etc/hostname.+interface+ and /etc/dhcp.+interface+ (to get the system to register its name with the DNS server after getting its DHCP address) but then I get a system with no root password and no DNS configuration, even though they are set in the sysidcfg file.
I can write a script that gets part of the way using sysidcfg and /etc/... files, then boots the zone and then runs a bunch of voodoo via zlogin commands to fix all the stuff that couldn't be done 'properly', but that's not a 'boot and walk away' environment. I can write a script that uses sysidcfg and hacks around with other files in /etc (like nsswitch.conf, resolv.conf), but that just feels likes a dirty hack to fix something that wasn't done properly in the first place.
So where am I going wrong and how do I do it right (within the constraints defined)? Why can't I configure, boot and walk away?
ThanksThanks abrante
Thanks for your response!
I don't think the config is messed up after the installation. I think the installation is fine, it's just not what I want :-)
I'm trying to decouple the zonename from the system name and get DNS registrations working. After installation, a DHCP client can get its hostname from DNS but I'm trying to do it the other way around. I want the DHCP client specify its own hostname, get an address from the DHCP server and then register its hostname with DNS. If the system gets its name from DNS/DHCP then I have to configure those to provide the system name and I don't own the DHCP/DNS infrastructure. These zones are for a development/QA environment, so we create and reconfigure these frequently. Hence the need to specify the system name within the zone and register that name in the DNS.
I have tried fiddling with the PARAM_REQUEST_LIST but it does not seem to be working as I expect. :-$ Removing 12 did not help with setting the hostname from the system. DNS does not have a registered name for this system anyway, so even if it tried to get a name for this system, it would get nothing.
I also do want the DHCP to change the DNS server and domain name, but this does not happen even though my dhcpagent includes 6 and 15 in the PARAM_REQUEST_LIST. I still have to set them in the sysidcfg file because it is always ignored in Solaris (S10u8 with 10_Recommended 30-Jul-2010)
As stated, I know I can hack around with the system after it has booted. But I'm trying to configure the system before it starts and let it take care of itself and not have to touch it. Frankly I'm surprised that the sysidcfg does not allow you to set a hostname name when you are using DHCP, that the default DHCP configuration does not register the system name with the DNS server, and the DNS config from the DHCP response is ignored. Even a sys-unconfiged system requires DNS configuration during initial boot, when I know that the DHCP response contains DNS information.
FYI: Windows systems using DHCP work as expected in this respect by default, i.e. set system name, use DHCP --> system gets address from corporate DHCP, DNS settings are set from DHCP information, DNS registration is made for system name.
I'm working around this at the moment... I call my zone by the system name I want, I hardcode the DNS settings in the sysidcfg file and I create the hostname.+nic+ and dhcp.+nic+ files in the zone storage to get the system to register its name with DNS, them boot.
Edited by: cydonian on Aug 19, 2010 7:45 PM -
Hi
does Snow Leopard have DNS & DHCP services in it ? how to make those role run and configure them ?
and how to make a server a domain controller "silly Windows History in my mind"does Snow Leopard have DNS & DHCP services in it
You mean Snow Leopard Server, right? In which case, yes.
how to make those role run and configure them ?
Click a checkbox or two in Server Admin (and add your domain/network-specific data, of course).
and how to make a server a domain controller "silly Windows History in my mind
Do you intend to make a Windows domain controller? If so, you can't. Mac OS X Server includes a Samba server which can handle parts of a Windows directory system, but it can't emulate a full Windows Active Directory server which has way more elements.
On the other hand, if you just mean to create a directory server for your network then, just like the DNS and DHCP server response above, you click a couple of checkboxes in Server Admin and add your directory-specific data via Workgroup Manager (one of the bundled Server apps). -
What are the endpoints attributes collected by NAC Profiler through SNMP and DHCP?
Hi Everyone,
Please help on this.
I want to know what are the endpoints attributes collected by NAC Profiler to discover and profile the endpoints.through SNMP protocol and DHCP protocol.
Also if anybody can explain a simple used case on this.
Please guide me on this.
Thanks in advance.
Thanks,
Abuzar.Hi,
SNMP
=====
NetMap queries network devices via SNMP for:
System information
Interface information
Bridge information
802.1X information (PAE MIB)
Routing/IP information
CDP MIB Information
This information is used to Build and maintain a model of the network topology and endpoint discovery.
NetMap uses SNMP Get, GetNext and GetBulk (when available) requests to query the SNMP agents running on the network infrastructure devices to gather specific Management Information Base (MIB) objects about their status based on device type (Layer 2 or Layer 3).
In addition to polling each network device for all MIB data at a regular interval, NetMap may also be commanded to poll port-specific information when the NAC Profiler system is notified that an endpoint has joined or left the network via SNMP traps sent by devices at the network edge, switches typically.
Upon receipt and verification of a link state (link up, link down) or MAC notification trap, NetTrap will notify the NAC Profiler Server that a change has occurred on the network edge (endpoint joined or left a network port). If the trapping device is in the NAC Profiler configuration, the NetMap component module assigned to poll the device that sent the trap will be commanded by the Server module to initiate a poll of the device's port information to determine the change to the endpoint topology that resulted in the trap being sent by the network device.
The information gathered by NetMap is processed by the Server accordingly to update the network topology, noting the endpoint joining or leaving a port. Note that NetMap SNMP polling of network devices resulting from a trap is localized to the port specified in the trap. This is unlike the regular polling that occurs at the frequency specified for each device type (L2 and L3) which gathers all SNMP information from the device used by the NAC Profiler system.
DHCP:
=====
The NetWatch module listens for traffic including DHCP traffic.
The module will collect all the DHCP information on the traffic collected, like mac address, ip address, DHCP Vendor Class Identifier in DHCP request, host name in DHCP request, requested specified options in DHCP request (option 55) and full list of DHCP options supported by the DHCP client as specified in the DHCP request.
All the endpointe data can then be used to map endpoints with profiles.
HTH,
Tiago
If this helps you and/or answers your question please mark the question as "answered" and/or rate it, so other users can easily find it. -
How to synchronize between DHCP binding table and DHCP snooping table ?
I clear DHCP snooping table with command "clear ip dhcp snooping binding " , and PC can't communicate with other any more. So how to synchronize between DHCP binding table and DHCP snooping table ?
dhcp-test#sh ip dhcp bind
IP address Client-ID/ Lease expiration Type
Hardware address
99.1.65.32 0100.1125.353c.25 Mar 02 1993 01:05 AM Automatic
99.1.65.33 0100.1438.059f.85 Mar 02 1993 12:01 AM Automatic
dhcp-test#sh ip dhcp snooping binding
MacAddress IpAddress Lease(sec) Type VLAN Interface
Total number of bindings: 0
thanks!ip dhcp snooping binding mac-address vlan vlan-id ip-address interface interface-id expiry seconds
Add binding entries to the DHCP snooping binding database. The vlan-id range is from 1 to 4904. The seconds range is from 1 to 4294967295.
Enter the above command for each entry that you add
To delete the database agent or binding file, use the no ip dhcp snooping database interface configuration command. To reset the timeout or delay values, use the ip dhcp snooping database timeout seconds or the ip dhcp snooping database write-delay seconds global configuration command.To renew the database, use the renew ip dhcp snooping database privileged EXEC command. -
IPoE BNG and DHCP on the ASR9K
Hi,
can some one tell me if this is possible.
I have a bundle Interface -using ambiguous VLANS:
interface Bundle-Ether100.1
vrf customers_1
ipv4 unnumbered lo2
ipv4 point-to-point
arp learning disable
service-policy type control subscriber UFB_DHCP
ipsubscriber ipv4 l2-connected
initiator dhcp
encapsulation ambiguous dot1q any second-dot1q any
I have two loopback interfaces:
interface lo2
vrf customers_1
ipv4 address 100.64.0.1 255.255.128.0
interface lo3
vrf customers_1
ipv4 address 200.200.200.1 255.255.254.0
I am authenticating users using option82 remote-id, and DHCP for address allocation. I want to use RADIUS to send back attributes, to set the users template, and, somehow set the dhcp giaddr so that the user gets an address from the correct pool.
ie. put the user into this template:
dynamic-template
type ipsubscriber CUSTOMER
vrf customers_1
ipv4 unnumbered Loopback3
and have them then given an address in the lo3 (200.200.200.0) range. No matter what i do the dhcp giadd remains the address of the Bundle Interface.
I have tried all sorts of radius attributes:
Cisco-AVPair = 'subscriber:service-name=CUSTOMER'
Cisco-AVPair = 'subscriber:command=activate-service'
I have tried:
Cisco-AVPair= 'ipv4:ip-unnumbers=Loopback3'
Cisco-AVPair= 'subscriber:classname=lo192' - and creating a dhcp class to set giaddr
I get a "aaa_type invalid attribute, flags 0x21"
I am at a bit of loss, and am not sure if what I am wanting to do is even possible.
though if set the template statically via an onboard policy things seem to work, and my user gets an address from the correct loopback.
any help would be appreciated.
ta.Alexander,
thanks for your reply,
If I use
Cisco-AVPair = 'subscriber:sa=UFB_CUSTOMER' -> sets dynamic template
Cisco-AVPair += 'ipv4:ipv4-unnumbered=Loopback3' -> sets ipv4 loopback
I get the following form the RADIUS debug (showing template, and loopback understood by RADIUS)
RP/0/RSP0/CPU0:Nov 28 13:33:11.478 : radiusd[1120]: Radius packet decryption complete with rc = 0
RP/0/RSP0/CPU0:Nov 28 13:33:11.478 : radiusd[1120]: RADIUS: Received from id 195 202.74.33.109:1812, Access-Accept, len 121
RP/0/RSP0/CPU0:Nov 28 13:33:11.478 : radiusd[1120]: RADIUS: Vendor-Specific [26] 34
RP/0/RSP0/CPU0:Nov 28 13:33:11.478 : radiusd[1120]: RADIUS: authenticator F2 4D D3 E7 B1 E8 90 D3 - F8 77 F1 1C 28 36 E9 6C
RP/0/RSP0/CPU0:Nov 28 13:33:11.478 : radiusd[1120]: RADIUS: Vendor-Specific [26] 41
RP/0/RSP0/CPU0:Nov 28 13:33:11.478 : radiusd[1120]: RADIUS: Reply-Message [18] 26 User authenticated - UBA
RP/0/RSP0/CPU0:Nov 28 13:33:11.479 : radiusd[1120]: pack_length = 121 radius_len = 121
RP/0/RSP0/CPU0:Nov 28 13:33:11.479 : radiusd[1120]: rad_nas_reply_to_client: Received response from id : 195,packet type 2
RP/0/RSP0/CPU0:Nov 28 13:33:11.479 : radiusd[1120]: Total len = 121, Radius len = 121
RP/0/RSP0/CPU0:Nov 28 13:33:11.479 : radiusd[1120]: filter not found
RP/0/RSP0/CPU0:Nov 28 13:33:11.479 : radiusd[1120]: Decoding the attribute: Vendor-Specific, aaa_type invalid attribute, flags 0x21
RP/0/RSP0/CPU0:Nov 28 13:33:11.479 : radiusd[1120]: Decoding the attribute: Vendor-Specific, aaa_type invalid attribute, flags 0x21
RP/0/RSP0/CPU0:Nov 28 13:33:11.479 : radiusd[1120]: This is sub-string of the Loopback interface name
RP/0/RSP0/CPU0:Nov 28 13:33:11.479 : radiusd[1120]: Loopback attribute value: Loopback3
RP/0/RSP0/CPU0:Nov 28 13:33:11.479 : radiusd[1120]: Decoding the attribute: Reply-Message, aaa_type reply-message, flags 0x100
RP/0/RSP0/CPU0:Nov 28 13:33:11.479 : radiusd[1120]: Reply-Message fragments, 24
RP/0/RSP0/CPU0:Nov 28 13:33:11.479 : radiusd[1120]: , total 24 bytes
RP/0/RSP0/CPU0:Nov 28 13:33:11.479 : radiusd[1120]: RADIUS: parsing sevice 'UFB_CUSTOMER' (len 12)
RP/0/RSP0/CPU0:Nov 28 13:33:11.479 : radiusd[1120]: (rad_nas_reply_to_client) Successfully decoded the response No error: PASS
RP/0/RSP0/CPU0:Nov 28 13:33:11.479 : radiusd[1120]: (rad_nas_reply_to_client) Successfully stored the preferred server info
RP/0/RSP0/CPU0:Nov 28 13:33:11.478 : radiusd[1120]: Freeing server group transaction_id (B1000047)
output from show subscriber running:
Subscriber Label: 0xff
% No such configuration item(s)
dynamic-template
type ipsubscriber UFB_CUSTOMER
vrf customers_1
The subscriber shows up as a session:
RP/0/RSP0/CPU0:tpisp-cr02-h#show subscriber session all
Thu Nov 28 13:38:05.389 UTC
Codes: IN - Initialize, CN - Connecting, CD - Connected, AC - Activated,
ID - Idle, DN - Disconnecting, ED - End
Type Interface State Subscriber IP Addr / Prefix
LNS Address (Vrf)
IP:DHCP BE100.1.ip71 AC 100.64.0.98 (customers_1)
However..
the ip address range is from the loopback 2 address, (this is the loopback bound to the unbundled BNG interface)
My understanding is that the giaddr address should have been changed to the ip address of lo3, which is the loopback specified in the RADIUS attribute.
dhcp debug: (this is the dhcp debug that follows directly after the RADIUS debug)
RP/0/RSP0/CPU0:Nov 28 13:33:11.484 : dhcpd[1080]: DHCPD PACKET: TP1225: Process packet event, client mode: PROXY
RP/0/RSP0/CPU0:Nov 28 13:33:11.484 : dhcpd[1080]: DHCPD PROXY: TP1955: FSM called for chaddr 000c.4270.6e7c with event DPM_SUCCESS state INIT_DPM_WAIT
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD PROXY: TP1917: Process client request called for chaddr 000c.4270.6e7c
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD PACKET: TP1883: Giaddr not present, Set giaddr 100.64.0.1, chaddr 000c.4270.6e7c
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD PACKET: TP571: L3 packet TX unicast to dest 202.74.33.108, port 67, source 100.64.0.1, vrf 0x60000003 (1610612739), tbl 0xe0000012 (3758096402)
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: ---------- IPv4 DHCPD --- dhcpd_iox_l3_unicast_packet -------
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: VRF name (id): customers_1 (0x60000003)
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: L3 src: 100.64.0.1
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: L3 dst: 202.74.33.108
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: L3 dst port: 67
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: metadata: L3 input Intf: Bundle-Ether100.1
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: metadata: Output Intf: Null
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: metadata: FROM: L3
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: metadata: NETWORK_ORDER
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: metadata: Vlan Info
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: metadata: Vlan EtherType 1: 0x8100
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: metadata: Vlan Priority 1: 0 (0x0)
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: metadata: Vlan Format 1: 0 (0x0)
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: metadata: Vlan ID 1: 101 (0x65)
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: metadata: Vlan EtherType 2: 0x8100
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: metadata: Vlan Priority 2: 0 (0x0)
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: metadata: Vlan Format 2: 0 (0x0)
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: metadata: Vlan ID 2: 23 (0x17)
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666:
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: op: BOOTREQUEST
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: chaddr: 000c.4270.6e7c
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: xid: 0x303751ed
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: flags: 0x8000 (broadcast)
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: ciaddr: 0.0.0.0
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: yiaddr: 0.0.0.0
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: siaddr: 0.0.0.0
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: giaddr: 100.64.0.1
RP/0/RSP0/CPU0:Nov 28 13:33:11.485 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: cookie: 0x63825363
RP/0/RSP0/CPU0:Nov 28 13:33:11.486 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: option: MESSAGE_TYPE: DISCOVER
RP/0/RSP0/CPU0:Nov 28 13:33:11.486 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: option: PARAMETER_REQUEST data: "0x01-79-03-21-06-2a"
RP/0/RSP0/CPU0:Nov 28 13:33:11.486 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: option: CLIENT_IDENTIFIER data: "0x01-00-0c-42-70-6e-7c"
RP/0/RSP0/CPU0:Nov 28 13:33:11.486 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: option: HOST_NAME data: "MikroTik"
RP/0/RSP0/CPU0:Nov 28 13:33:11.486 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: option: RELAY_INFORMATION
RP/0/RSP0/CPU0:Nov 28 13:33:11.486 : dhcpd[1080]: DHCPD_PACKET: pktTx id 666: option: RELAY_INFORMATION: CIRCUIT_ID: 0x01-0f-43-48-4f-52-55-53-31-30-30-30-30-30-34-35-33
I tried changing the dynamic template to service rather than ipsubscriber, this did not make a difference. You make a reference to DHCP classname. I have defined a DHCP class, however do not know how to match or force the use of a particular class by using a RADIUS attribute.
Thanks,
Mike -
WLAN and DHCP with WLC controller
Hi,
I've a question about how works dhcp for wifi clients.
On the WLAN edit I've seen that my option are:
1) DHCP override-> i insert the dhcp server address here
2) without DHCP override -> the WLAN will use the DHCP server configured under the management interface
Based upon these informations: why I can configure DHCP server also in other interfaces and not only in the "management" interface ?
If I configure 2 DHCP servers on a "user interface" ( without the "override" option in WLAN ) my clients will use these DHCP or the DHCP on the "management" interface ?
Many thanks in advance
Luigifrom the on-line help it seems different ;-/
=====
DHCP Server (Override)
When selected, you can enter the IP address of your DHCP server. This is a required field for some WLAN configurations. There are three valid configurations:
DHCP Server Override ON, a valid DHCP Server IP address, and DHCP Address Assignment Required: Requires all WLAN clients to obtain an IP address from the DHCP Server.
DHCP Server Override ON, a valid DHCP Server IP address, and DHCP Address Assignment Not Required: Allows all WLAN clients to obtain an IP address from the DHCP Server or use a static IP address.
DHCP Server Override OFF: Forces all WLAN clients to use the DHCP setting in the Management Interface, not the static address.
===========
It seems that i can Use external DHCP server, putting the address :
- in the box that appair when i flag the "override" option
- or in the management interface
I think documentation is not so clean
many thanks
Luigi -
Hi there,
I noticed a few discussion about Cisco Wireless bridges not being able to pass DHCP requests from clients.
In my case I have a WET200 successfully associated with a Deliberant DLB2700 access point. When client computers are configured with static IP addresses they can browse the network, connect to e-mail etc. Problem starts when a computer will try to obtain the IP address via DHCP while connected to the wireless bridge. It simply doesn't work.
Is there a newer firmware or a secret settings which will allow me to make it working? I have a quite few of these WET200 units ...
Thanks in advance for any suggestions.Hi Mr 2,
Please check the following link;
1. http://support.deliberant.com/forums/p/1069/4889.aspx#4889 does this sound familiar ?
But my thoughts are at this stage, sure look like there is a question hanging over the deliberant model number you mentioned, at least that what the deliberant forum might be suggesting.
2. But does a WET200 in place of the deliberant result in DHCP requests being dropped?
(Since you have multiple WET200, it would be interesting to peruse this approach for diagnostic reasons and to confirm this in your mind.)
But, if you can't do step 2 above, and are adventurous, maybe you can capture the DHCP server interaction.
I'm guessing your network may look like the following, excuse the rough network diagram;
PC---WET200~~~~~~~~~deliberant-------managed switch------------router
| | |
HUB | |------DHCP Server
mirror port
Beg borrow or steal a 'HUB' and they are hard to find these days, NOT a switch.
Or as an alternative, if connected to a managed switch, mirror the Ethernet switch port that leads to the deliberant AP to a PC running ethereal.
Using ethereal or similar application, just checkout the state of ARP and DHCP packets that egress in and out of the switch port that is connected to the deliberant AP. (I'm guess ARP is working otherwise you would not be getting anywhere from behind the WET200.)
But if you wish to post a ethereal trace, it would be fun to quickly check it out.
If you do this please don't capture megabytes, try to capture just a bit before and after a DHCP request.
The other option is to just keep doing what you are doing and statically define IP addresses.
regards Dave -
I´m doing a design for presale, where I will need a router what support PAT for 500 or a little more of users, it not need any more features only static routing and dhcp pool for 500 users, can you help me for know what router recommend?
What is your WAN speed currently and projected WAN speed in the next 3 years?
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I have recently turned on the Radius server, and it seems to work fine, and has taken control of my Airport base station which is great. I only have one problem which is that the DHCP info provided by the server to the clients only seems to give one of the 2 DNS addresses that I have listed in the DHCP server info section. This is rather frustrating as it worked fine with WPA!
Any thoughts?I just upgraded from a 2008 domain to 2012. I followed all the best practices, set up new 2012 DC and transferred all roles to it then removed the 2008 server. I just have the one DC at the moment and it's running both DNS and DHCP. Ever since we've had some odd DNS issues which usually require a reboot of the server to fix. Now at this point I'm digging through DNS and DHCP and seeing that a lot of client IP addresses are not matching up. DNS does not have the correct IP's for several clients. How can I fix dns?
This topic first appeared in the Spiceworks Community -
Sles dns and dhcp; OR NOWS SBE dns and dhcp
Ok, I'm finally to the state of setting up dns and dhcp. From what I read the NOWS way is to set it up in the sbsadmin web interface. That seems to use different backend programs than the sles dns and dhcp programs. For instance I think I read that the NOWS uses dhcpd, whereas in yast it says it uses dhcp-server.
SHOULD I use the NOWS way, or the SLES way for dns and dhcp? Looks like the sles way is more easily configured and managed, but I don't know if it will not be functional for my NOWS users.Originally Posted by dwjrdto2000
After doing a lot more reading; specifically in the oes2 documentation, I am going to use the Novell dhcp and dns servers and administer them from the downloadable java console as explained in the documentation.
NOWS SBE doesn't provide a capability to manage DNS/DHCP other than by editing the config files. I would be much more comfortable doing what you are doing however you have to be careful. NOWS SBE sometimes installs modified OES components (or used to) so one never knows what to expect when deviating from a standard NOWS SBE install. -
My Barricade g died (SMC2804WBRP-G). I replaced it with an Airport Extreme (802.11g).
With the Barricade g, I had manually assigned IP address to all the computers on the LAN (range 192.168.x.1-192.168.x.99). The router distributed IP addresses to the wireless clients via DHCP range (192.162.x.100-192.168.x.200)
I've setup the AEBS to Distribute IP addresses and selected Share a single IP address (using DHCP and NAT).
BUT, the AEBS is assigning some of the manual addresses to wireless client IP requests. Then the computer that is supposed to have a manual IP address doesn't have one. Basically, the manual and DHCP addresses are coming from the same pool and causing conflicts.
How do I deal with manual IP addresses AND DHCP with this router?
ThanksDavid,
Thanks for the input. But, I may have misread my post.
From my original post.
'With the Barricade g, I had manually assigned IP address to all the computers on the LAN (range 192.168.x.1-192.168.x.99). The router distributed IP addresses to the wireless clients via DHCP range (192.162.x.100-192.168.x.200).'
In other words, on the network, LAN=static IPs, Wireless clients=DHCP.
You can have both static and DHCP on the same network. -
VRF and DHCP issue
We have a 6500 ( 12.2 (33) SXH5 ) that has a VRF running for our guest network. On this 6500 resides the DHCP pool with a range defined for our guest network. We have a stack of 3750's (12.2 (46) SE) connected to the 6500 with a L3 connection. The 3750's have a local guest VLAN with its gateway defined in a VLAN interface. This VLAN on the 3750 has an IP helper address pointing to an IP within the VRF on the 6500. When debugging DHCP on the 6500, a request is received and sent back out. The client never receives this request.
If a static IP is applied, the client is able to communicate anywhere within the VRF successfully (including pinging the IP within the helper-address. As many posts have pointed out - there is no VRF <name> under the ip dhcp pool <name> within the 6500. I am just wondering if anyone else has run into this and what their solution was.
Thanks.Hi,
I have tested the dhcp server and vrf on Cisco 3640 and it is working without VRF under the ip dhcp pool. Please ensure that you have configured routing for the dhcp-relay agent(VLAN facing dhcp client on 3750 in your case). -
Static IP address and DHCP range
Hi,
A month back I decided to move over from Win to OS X and got my MB Pro RD. Along with that decided to replace my DLink DIR-655 wireless router with TC.
My home network counts up to 15 devices that uses wireless AP. ISP ethernet cable comes out of wall and directly to TC, no other devices in between.
Back in time when I had DLink in use it was using static IP 89.201.x.x and DHCP was assiging 192.168.x.x addresses to devices.
Now when moved over to TC only DHCP range I can get is in range 89.201.x.x, it does not allow to change DHCP to something else than 89.201.x.x
Question - is there a way to configure TC so that I use same static IP (89.201.x.x) but DHCP gives out 192.168.x.x to devices?
Thanks in advance!
BR
UAUXOk you must set the TC into router mode.. at the moment you have it in some other mode..
You can use 192.168 if you want to but by default the TC is 10.0.1.x
So the Internet tab should be set either dhcp or if you have static IP then you can apply that.
Normally even a static IP from the ISP is still received by dhcp on the WAN interface.
On the Network tab you must select DHCP + NAT.
In the network options you change the IP and dhcp range..
The TC always takes address 1.. and you do not set the TC address directly.. rather you set the dhcp range and the TC will follow.
So in my example I have set 192.168.2.2-200 for dhcp and the TC will automatically become 192.168.2.1
Set it as you prefer. -
I want to understand the differences in the way you can reserve a static address for a device on the network. I had previously set the device itself to an address and then reserved it with DHCP Client ID, which I thought was just the devices static addresss. I'm not sure if this was in fact correct or just happend to work. I know what a MAC address is, but I'm not really sure what the DHCP Client ID is. So it would be great if someone could clarify it, and the difference between reserving address by MAC Address or DHCP Client ID.
A MAC address is a unique identification consisting of letters and numbers in a form that looks like this:
xx:xx:xx:xx:xx:xx
Every network device has a MAC address, which can be found on a label on the bottom or back of the device. Apple calls this the Ethernet ID.
A DHCP Client ID is an optional name that you can assign to a device. For example, on your Mac....
Open System Preferences (gear icon on the dock)
Open Network
Click on Ethernet
Click Advanced at the lower right
You may be able to edit the DHCP Client ID here....for example.....you could enter MJ500's MacBook in the space provided. That would be the Client ID of your Mac.
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