WRVS4400Nv2 DHCP Relay on 2nd VLAN

Similar Questions

• SG300 insert option82 in DHCP relay

  Hey guys, anyone having trouble getting a SG300 series pass to insert information from option82? I have Working DHCP relay between two VLANs successfully, however, I want to identify where the client is connected in order to define their preferences for optimal routing.

  switch-20-0#show ip dhcp relay
  DHCP relay is Enabled
  Option 82 is Enabled
  Maximum number of supported VLANs without IP Address is 256
  Number of DHCP Relays enabled on VLANs without IP Address is 1
  DHCP relay is not configured on any port.
  DHCP relay is enabled on Vlans: 20
  Active: 20
  Inactive:
  Servers: 192.168.0.2
  

  I have to you missing something simple. Any help, or even "Hey have you tried' type answers very much appreciated!

  Hi Jonathan,.

  To my knowledge, you have everything configured properly. I would try to set up packet capture on the switch to the position to interface to the DHCP server to see if the information is included in the DHCP Discover message.

  -Good Trent

  * Please note the useful messages! **

• 7048 routing/DHCP relay with 5548

  Hello

  I have a problem with the 5548 do not relay the query DHCP for PXE (SCCM), 5548 is connected to 7048 (trunk). We shop Cisco, this is the first time that I am using DELL. Any help is appreciated.

  --------7048--------
  
  !Current Configuration:!System Description "PowerConnect 7048, 4.2.2.3, VxWorks 6.6"!System Software Version 4.2.2.3!System Operational Mode "Normal"!configuregvrp enablevlan databasevlan 2,10-11,21,50-52,156vlan routing 1 1vlan routing 10 2vlan routing 21 3vlan routing 50 4vlan routing 51 5vlan routing 52 6vlan routing 156 7vlan routing 2 8vlan routing 11 9vlan association subnet 10.112.0.0 255.255.252.0 10vlan association subnet 10.112.4.0 255.255.255.0 11vlan association subnet 10.116.4.0 255.255.252.0 21slot 1/0 5    ! PowerConnect 7048slot 1/1 11   ! SFP+ Cardslot 1/2 9    ! CX4 Cardslot 2/0 6    ! PowerConnect 7048Pslot 2/1 11   ! SFP+ Cardslot 2/2 9    ! CX4 Cardstackmember 1 5    ! PCT7048member 2 6    ! PCT7048Pip routingip route 0.0.0.0 0.0.0.0 192.168.1.58ip route 10.0.0.0 255.0.0.0 192.168.1.58interface vlan 1exitinterface vlan 2ip address 192.168.1.57 255.255.255.252ip local-proxy-arpno ip redirectsexitinterface vlan 10ip address 10.112.0.1 255.255.252.0no ip redirectsexitinterface vlan 11ip address 10.112.4.1 255.255.255.0ip helper-address 10.112.1.50ip local-proxy-arpno ip redirectsexitinterface vlan 21ip address 10.116.4.1 255.255.252.0ip helper-address 10.112.1.50ip helper-address 10.112.1.51exitinterface Te1/1/2description 'F2_NTR_4'gvrp enablespanning-tree portfastswitchport mode trunkdot1x port-control force-authorizedexit
  
  ------5548------
  
  vlan databasevlan 10-11,21exit
  
  gvrp enable
  
  ip dhcp relay enable
  
  stack master unit 1!interface vlan 1 ip address dhcp!interface vlan 10 ip address 10.112.0.4 255.255.252.0 ip dhcp relay enable ip proxy-arp
  
  interface gigabitethernet1/0/18 spanning-tree portfast switchport access vlan 21
  
  ip route 0.0.0.0 0.0.0.0 10.112.0.1
  
  interface tengigabitethernet1/0/1 description F2_NTM gvrp enable spanning-tree portfast auto switchport mode trunkSW version 4.1.0.1 (date  05-Apr-2012 time  15:03:04)
  
  Gigabit Ethernet Ports=============================no shutdownspeed 1000duplex fullnegotiationflow-control onmdix autono back-pressurespanning-treespanning-tree mode RSTP
  
  qos basicqos trust coseee enable
  

  SCCM PXE server is fine, tested on Cisco gear.
  

  It's weird, PXE starts working when I hard code the fiber connecting switches to full-duplex, even if they show the full duplex in automatic. Thanks for your help.

• DHCP Snooping without configured DHCP relay

  Hello

  We use DHCP Snooping with DHCP relay successfully configured... but I was wondering if the DHCP-Snooping function is also working on a (composed by different switches) L2 network where the DHCP server is on the same VLAN as the client?

  I know that server must be in a VLAN dedicated but segmentation VLAN server DHCP - client is scheduled in a second step...

  Thanks for your suggestions!

  Hi Omar,.

  The DHCP server can be on the same VLAN as the customers, no problem with that.

  You must configure the port on the DHCP server as being approved with the following commands:

  conf t

  IP dhcp snooping

  IP dhcp snooping vlan x

  interface fastethernet x / y

  IP dhcp snooping trust

  FastEthernet x / is the port where the DHCP server must be located.

  Cheers:

  István

• Firmware 1.4.0.88 for SG300-52 seems to break DHCP relay

  My VLAN to end my switches, so I use a DHCP relay with Option82 to distribute addresses for the subnet of the VIRTUAL LAN. After the transition from 1.3.7.18 to 1.4.0.88, DHCP isn't being delivered on my VLAN. Does anyone else have this problem?

  I'm just creating DHCP relay for the first time with my SG 300-28, 1.4.0.88 firmware and noticed that the DHCPDISCOVER promulgated by the relay had the same source and destination (67) port, while the original DHCPDISCOVER used 67 & 68. In addition the 1.3.7.18 firmware is not exchange these autour:

  Excerpts from Wireshark:

  1.4.088-

  Original DHCPDISCOVER to the customer:

  User Datagram Protocol, Src Port: bootpc (68), Dst Port: bootps (67)

  Relayed SG300 DHCPDISCOVER:

  User Datagram Protocol, Src Port: bootps (67), Dst Port: bootps (67)

  This seems a bit suspect to me

  1.3.7.18

  Original DHCPDISCOVER to the customer:

  User Datagram Protocol, Src Port: bootpc (68), Dst Port: bootps (67)

  Relayed SG300 DHCPDISCOVER:

  User Datagram Protocol, Src Port: bootpc (68), Dst Port: bootps (67)

  I am not sure that this is your problem (it does not solve my problem), but I want to underline the thought

• RV180 DHCP Relay

  Hello

  Apologies if Im posting in the wrong place, but I am after some help.

  What Im trying to do is:

  Internet connection - router homepage (for normal home internet) - RV180

  RV180:

  2 VLAN (1-10) - which provide IP addresses for my lab at home (DC, server ESXi)

  The other addresses DHCP "Relay" between the House 2 router devices (NAS and a PC box)

  VLan 1 is set to DHCP relay

  VLan 10 is defined on the DHCP server, configured to give IP addresses in the range 192.168.10. *.

  The home router is running OpenWRT if that makes a difference

  Is it possible to get DHCP traffic on the WAN port to VLAN 1?

  Thank you

  DMO

  Hello

  "Is it possible to get DHCP traffic on the WAN port to VLAN 1.

  No - since vlan10 and vlan1 are connected directly - and the RfC TCP/IP does not allow this - the router forwards traffic via the directly connected interface.

• DHCP relay does not not in in-band mode

  Hi Faisal,.

  wireless client does not have dhcp via a CAS server server ip address,.

  Here's the scenario,

  1. inband case network configuration:

  Trust interface (for protected network)	Untrusted interface (network management)
  IP address Subnet mask Default gateway Set the management VLAN ID: Through VLAN ID managed network	IP address Subnet mask Default gateway Set the management VLAN ID: Through VLAN ID protected network

  2. wireless customers in vlan rogue who is 104 and I traced the vlan 104-400 (trust vlan)

  VLAN vlan untrusted trusted

  140                                                        400

  3 run subent

  ip subent                                                                               vlan

  10.161.136.5 / 255.255.248.0 140

  10.161.136.5 is the trusted ip subnet VLANs 400

  4. Enter ARP is not configured

  in switch, reliable and trusted ports are configured as port trunk and permit reliable and trusted VLAN respectively.

  When we move the client VLAN 400 wireless manually obtain ip address but when wireless client is in vlan 140 its not get ip address and in the configuration of the approved switch and ports not reliable are trunk port and using the vlan native is 1

  WLC pass port is port trunk and allowed for all the VLANS

  do I need to configure the ARP entries or what other configurations are required to work CASES like a DHCP relay.

  Thank you

  Laxman,

  Three things:

  -If it's in VGW, approved and non-approved interfaces must have the same IP address

  -Uncheck "the passage through the VLAN ' on both sides

  S ' away from VLAN 1 if possible!

  HTH,

  Faisal

• SRW248G4P - dhcp relay?

  Hello

  Does anyone know if SRW248G4P supports the dhcp relay?

  I don't see any option for this with 1.0.2 firmware version

  Thank you

  Hi Ukexport, as much as I know it doesn't have. In addition, it is only a layer 2 device, several vlan dhcp would be routed by a deflector, not locally by the switch.

  -Tom
  Please mark replied messages useful

• E4200 - DHCP relay

  I'm looking to get a new wireless router, so I am able to stream HD movies from my server to a media center PC.  I currently have a WRT54G running DD - WRT.  I have a firewall 5GT of Juniper as my gateway interface that manages all DHCP addresses.  I reserved IP addresses for each wireless device in my house and the WRT54G is configured for DHCP relay to these devices.

  Is there a way to activate the E4200 relay my 5GT to host DHCP traffic?  Thank you.

  I would set up the E4200 as simple access point. Then you don't need any DHCP relay because everything is in the same local network, anyway.

• DHCP relay for users (ASA) SSL VPN

  I have ASA 5520 vpn endpoint. Before asa, there are firewalls which translates the public ip address to the private sector and to pass SSL traffic to ASA. I have configured DHCP relay to get the IP address for the DHCP in Windows Server users:

  dhcprelay Server 10.100.2.101 on the inside

  dhcprelay activate vpn

  dhcprelay setroute vpn

  and it does not work. with the local pool, it works fine. Should I do something else? When I turn on debugging it has not any activity.

  You try to assign the IP address to the SSL vpn client using the DHCP server?

  If so, you don't need these commands contained in your message.

  Basically, you need to set dhcp server in tunnel-group and dhcp-network-scope in group policy.

  Here is an example of Ipsec client. Setup must be the same.

  http://www.Cisco.com/en/us/partner/products/ps6120/products_configuration_example09186a0080a66bc6.shtml

• 6.1.4 NSX upgrade to 6.2.0: DLR fails to upgrade with DHCP relay message

  Hey all, in the middle of an upgrade of non-prod to a greenfield 6.1.4 6.2. Did the Manager NSX, and follow-up of all controllers. Then after the VMware recommended upgrade sequence, I did the GSS. Then began the DLR. When you try to upgrade the DLR, I received an error message

  The "Upgrade Version" operation failed for the entity with the following error message.

  [DHCP] To enable DHCP Relay, DR instance must be created with a single connected LIF.

  

  Also, the router now displays status in the NSX edges pane: "failed to create/update edgeAssist interface for edge edge-3.» 404 not found. »

  

  So I tried erase the configuration of DHCP on the DLR with the button relay remove, no dice. Tried to redeploy, fail with the same message. Tried to force synchronization, changes in status to "impossible to force synchronization. NSX Edge edge-3 is in poor condition. Try the operation again. The DHCP configuration disappears, but the change seems never commit, because when I browse the bracing or routing section and browse to the DHCP relay page, the original configuration is still there. It is a simple DLR with no configured HA. I have attached the newspapers of DLR tech support in case there is any support curious people out there. Note, vCenter 6.0.0 2741530, ESXi 5.5 Patch 5 reissue 2718055.

  He was just going to remove the DLR and re-create it since it's a lab, but if it wasn't a lab I just want to know why it's a failure.

  After reading more carefully, I apparently missed a step in the upgrade (hosts). I suggest that whoever does the upgrade follows the upgrade guide in pubs located here: 6.2 NSX VMware vSphere Documentation Center

  • Manager of NSX upgrade to 6.2
  • Upgrade of the Cluster controller NSX to 6.2, check the status of cluster control
  • Upgrade the cluster hosts for NSX 6.2
  • 6.2 the NSX border upgrade
  • Guest Introspection to NSX 6.2 update
  • Remove the NSX data security and redeploy

  So I tried a lot of things to work myself back from that. I tried to upgrade the hosts but that didn't fly, esx-vxlan has been blocked to version 5.5.0 - 0.0.2691051. To return to a viable State in the end I had to nuke basically the GSS, logical switches, DLR, TZ, manually uninstall the NSX vibs and unsubscribe manager the NSX to vCenter in the cluster take-off of the State of "uninstall." From there, re - install the 5.5.0 - esx-vxlan 0.0.2983935 (6.2) vibs on the cluster worked OK, and I rebuilt the gateway routing and dashboard. So read before making anywhere near prod. : )

• Several VLANS and DHCP relay on two stacked switch SGE2000-G5

  We were put to the task of securing a small desktop system managed that is currently set up with a standard switch for each of the offices (with different companies) to see each other and in some cases, access to each of the other documents on the network.

  Obviously, this is far from adequate set up and our goal is to isolate each office using VIRTUAL networks, but share a common internet connection provided by managed offices.  We have two switches for layer 3 Cisco SGE2000-G5, but we are new on Cisco equipment and VLAN, so we are not quite sure on how to implement this.  DHCP must be provided by a router, there is no server.  We are open to suggestions on the router as we still buy a.

  I hope that someone may be useful.

  Thank you very much

  Jim

  Hi Jim,.

  SGE2000 switches you are using must be able to handle this without issue. What type of router you are using? As long as you have a router that will take in charge VLAN / several subnets, it should be a simple configuration.

  Here's a quick run down of the measures to be implemented. (using vlan1 and vlan2)

  On the router, create a vlan / subnet 2 and set the port to connect to your shared resources with the two VLAN 1 and 2 switch. (it will be untagged, two will be marked)

  On the switch, create vlan2 and do the same for the port connected to the router. (vlan1 marked and tagged vlan2)

  Now for each switch port that you want to assign the port access and vlan1 and vlan2. (this vlan will be without a label)

  If your router allows, disable routing inter - vlan. If this isn't the case, you must create rules to block traffic from one network to the other.

  All this happens under the assumption that your router can support VLAN and can also make DHCP for this VLAN.

  Hope this information helps

• Help with DHCP relay

  I inherited a network with a dhcp/DC with two network cards, 1 for the data network and the other for the vlan voice.

  I know this is an unsupported configuration, and I want to get rid of the adapter for the vlan voice. I have to make sure that dhcp is working on the vlan voice.

  Network is made up of a stack of PowerConnect 70xx switces.

  My question is what must be configured on the stack. There are so many options... IP helper, relay DHCP, ect...

  If the switch is in mode Layer 2, then use l2relay DHCP commands. If it is in Layer 3 mode, then you use the controls to support IP. If in layer 3 mode make sure VLANS routing is turned on.

  Console #config

  Console (config) #ip Routing

  Console (config) #interface vlan 2

  Console (config-if-vlan2) #routing

  Console (config-if-vlan2) #exit

  Console (config) #interface vlan 3

  Console (config-if-vlan3) #routing

  Console (config-if-vlan3) #exit

  Console (config) #interface vlan 4

  Console (config-if-vlan4) #routing

  Console (config-if-vlan4) #end

  Hope this helps,

  Thank you.

• (Strange) problem with X 3000 DHCP relay functionality

  Hello

  I have a home network consisting of a Linux box running dhcpd server, connected to the X 3000 wireless router, connected - in turn - to the Repeater RE1000 and - finally - a DHCP client computer.

  As I run my own DHCP server, I configured X 3000 to be a relay.

  I get a very strange behavior. Specifically, the DHCP client present a package DISCOVER, which happens on the server (via the relay or router), the server responds with a package OFFER for the relay, but then - bizarelly! -the relay or router sends the OFFER NO response to the client, but the server!

  Needless to say, in this case the client does not register with the network.

  I captured packets with wireshark running on the server, and you can find them here:

  http://DL.dropbox.com/u/13536552/Linksys-problem/captured-packets.txt

  Can someone shed some light on this?

  P.S. No Linksys has professional technical support online?

  I highly recommend to connect servers only ethernet cable. A wireless link is still an unreliable link and should not be used for essential services like dhcp servers.

  Some routers have issues with broadcast traffic after the first group key renewal. That could well be the X 3000 shows the same problem. The only thing you could do is to then call Linksys technical support...

• DHCP NAK on wrong VLAN on SG500

  I have a 52 SG500 L3 mode with IPV4 addresses configured on 2 VLANS (1 & 2).

  DHCP server is running on the switch, and that only one pool is configured (for the subnet on the LAN VIRTUAL 2).

  When executing a capture of packets to test something with DHCP, I noticed that when a customer of the VLAN 1 sent a DHCP INFORM, the switch has responded his address IPV4 1 VLAN with a DHCP NAK.

  Curiously, it seems to only respond to only a single client with DHCP NAK. All other DHCP INFORM requests (several in the screenshot) seem to be ignored by the switch.

  Is there a reason why the switch would meet a DHCP INFORM on a subnet for which no DHCP pool is configured? Is there a way to stop this behavior?

  DHCP snooping * is * turned on the switch on the two VLAN 1 & 2.

  Thank you

  -Matt

  Looks like the same problem discussed in this thread of message:

  https://supportforums.Cisco.com/discussion/12196801/DHCP-scopes-SG500