Re: DHCP- Advise / Suggestions Apprciated
It was a typo error, I hope u understand that Thanks Gayathri Jon Krabbenschmidt <[EMAIL PROTECTED]> wrote in message DDBCC652E597D311BB6A009027AE9F97041E0EF7@SMV-EXCHANGE">news:DDBCC652E597D311BB6A009027AE9F97041E0EF7@SMV-EXCHANGE... > This will be a suit worth watching! I wonder if it will get the same > coverage as the MS vs Justice department?? :>) > > sorry.. could not help it. > > -Original Message- > From: Gayathri [mailto:[EMAIL PROTECTED]] > Sent: Friday, February 23, 2001 7:31 PM > To: [EMAIL PROTECTED] > Subject: Re: DHCP- Advise / Suggestions Apprciated > > > We are suing NT Servers for DHCP. > > Thanks for the ideas. > > Gayathri > > > > Mel Chandler PMI <[EMAIL PROTECTED]> wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > Or turn debug on and watch the communication happen. > > > > Mel L. Chandler, A+, Network+, MCNE, MCP+I, MCSE, CCNA > > [EMAIL PROTECTED] > > Network Analyst > > Information Services > > PMI Delta Dental > > (562) 467-6627 > > > > > > > > -Original Message- > > From: McCallum, Robert [mailto:[EMAIL PROTECTED]] > > Sent: Friday, February 23, 2001 2:44 AM > > To: 'Larry Lamb'; [EMAIL PROTECTED] > > Subject: RE: DHCP- Advise / Suggestions Apprciated > > > > > > Quick and easy way to find out if the packet is reaching each segment is > > . > > > > On each interface i.e. interface where user is, interface where DHCP > server > > is do... > > > > ip accounting output-packets or just plain old ip accounting. > > > > you should then do show ip account. > > > > This should show you the ip address 255.255.255.255 being helpered to > > whatever your address is. At this point take a note of the mac address of > > the requester. > > > > See if it is coming through to your server. > > > > Now..If it is then the cisco devices are working properly, back to the > > drawing board. > > > > If it isn't getting to the server then come back. I have encountered a > few > > gotchas doing this before. > > > > Hope this helps. > > > > -Original Message- > > From: Larry Lamb [mailto:[EMAIL PROTECTED]] > > Sent: 23 February 2001 10:15 > > To: [EMAIL PROTECTED] > > Subject: Re: DHCP- Advise / Suggestions Apprciated > > > > > > Everything I've found on Cisco tells me that multiple helper addresses are > > supported and I would have to assume that it's forwarding the packet to > both > > helper address and is taking the response from the first machine to > respond. > > Any chance you can define part of the scope on each server? This would > > ultimately solve the problem. Without a sniffer on both segments it's > going > > to be difficult to tell exactly what's happening unless someone has > already > > worked with this and has more input. > > > > "Gayathri" wrote in message <975b6q$d4v$[EMAIL PROTECTED]>... > > >Firstly, sorry for the repeated submission, I dont see my psoting under > > the > > >main heading so I am forced to post it again.. > > > > > >here is my question... > > > > > > I have 2 DHCP servers and I have defined both the IP helper addressess > in > > >our routers > > > > > >Now, if a client quieries for an IP, which of the servers will respond > > >first? > > > > > >The problem I have is we have defined one subnet in DHCP Server and not > in > > >the other. > > > > > >When this user is querying for an IP , he is not getting a response. > > > > > >interface Ethernet0 > > > ip address 10.X.X.X 255.255.0.0 > > > ip helper-address 10.X.1.X > > > ip helper-address 10.X.1.Y > > > > > >The said subnet is defined in the DHCP server 10.102.1.Y but, still > there > > >is no response. when the client requests. > > > > > >The main reason we have 2 DHCP servers is for redundancy. > > > > > >Please note that they are independant of each other . > > > > > >Does this mean that , when the client is requesting, the router first > > >forwards to the first DHCP server and since it is not getting a response > , > > >is dropping it? > > > > > >Thanks > > > > > >Gayathri > > > > > > > > > > > > > > > > > >_ > > >FA
RE: DHCP- Advise / Suggestions Apprciated
This will be a suit worth watching! I wonder if it will get the same coverage as the MS vs Justice department?? :>) sorry.. could not help it. -Original Message- From: Gayathri [mailto:[EMAIL PROTECTED]] Sent: Friday, February 23, 2001 7:31 PM To: [EMAIL PROTECTED] Subject: Re: DHCP- Advise / Suggestions Apprciated We are suing NT Servers for DHCP. Thanks for the ideas. Gayathri Mel Chandler PMI <[EMAIL PROTECTED]> wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Or turn debug on and watch the communication happen. > > Mel L. Chandler, A+, Network+, MCNE, MCP+I, MCSE, CCNA > [EMAIL PROTECTED] > Network Analyst > Information Services > PMI Delta Dental > (562) 467-6627 > > > > -Original Message- > From: McCallum, Robert [mailto:[EMAIL PROTECTED]] > Sent: Friday, February 23, 2001 2:44 AM > To: 'Larry Lamb'; [EMAIL PROTECTED] > Subject: RE: DHCP- Advise / Suggestions Apprciated > > > Quick and easy way to find out if the packet is reaching each segment is > . > > On each interface i.e. interface where user is, interface where DHCP server > is do... > > ip accounting output-packets or just plain old ip accounting. > > you should then do show ip account. > > This should show you the ip address 255.255.255.255 being helpered to > whatever your address is. At this point take a note of the mac address of > the requester. > > See if it is coming through to your server. > > Now..If it is then the cisco devices are working properly, back to the > drawing board. > > If it isn't getting to the server then come back. I have encountered a few > gotchas doing this before. > > Hope this helps. > > -Original Message- > From: Larry Lamb [mailto:[EMAIL PROTECTED]] > Sent: 23 February 2001 10:15 > To: [EMAIL PROTECTED] > Subject: Re: DHCP- Advise / Suggestions Apprciated > > > Everything I've found on Cisco tells me that multiple helper addresses are > supported and I would have to assume that it's forwarding the packet to both > helper address and is taking the response from the first machine to respond. > Any chance you can define part of the scope on each server? This would > ultimately solve the problem. Without a sniffer on both segments it's going > to be difficult to tell exactly what's happening unless someone has already > worked with this and has more input. > > "Gayathri" wrote in message <975b6q$d4v$[EMAIL PROTECTED]>... > >Firstly, sorry for the repeated submission, I dont see my psoting under > the > >main heading so I am forced to post it again.. > > > >here is my question... > > > > I have 2 DHCP servers and I have defined both the IP helper addressess in > >our routers > > > >Now, if a client quieries for an IP, which of the servers will respond > >first? > > > >The problem I have is we have defined one subnet in DHCP Server and not in > >the other. > > > >When this user is querying for an IP , he is not getting a response. > > > >interface Ethernet0 > > ip address 10.X.X.X 255.255.0.0 > > ip helper-address 10.X.1.X > > ip helper-address 10.X.1.Y > > > >The said subnet is defined in the DHCP server 10.102.1.Y but, still there > >is no response. when the client requests. > > > >The main reason we have 2 DHCP servers is for redundancy. > > > >Please note that they are independant of each other . > > > >Does this mean that , when the client is requesting, the router first > >forwards to the first DHCP server and since it is not getting a response , > >is dropping it? > > > >Thanks > > > >Gayathri > > > > > > > > > > > >_ > >FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > > > > _ > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > _ > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > _ > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: DHCP- Advise / Suggestions Apprciated
We are suing NT Servers for DHCP. Thanks for the ideas. Gayathri Mel Chandler PMI <[EMAIL PROTECTED]> wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Or turn debug on and watch the communication happen. > > Mel L. Chandler, A+, Network+, MCNE, MCP+I, MCSE, CCNA > [EMAIL PROTECTED] > Network Analyst > Information Services > PMI Delta Dental > (562) 467-6627 > > > > -Original Message- > From: McCallum, Robert [mailto:[EMAIL PROTECTED]] > Sent: Friday, February 23, 2001 2:44 AM > To: 'Larry Lamb'; [EMAIL PROTECTED] > Subject: RE: DHCP- Advise / Suggestions Apprciated > > > Quick and easy way to find out if the packet is reaching each segment is > . > > On each interface i.e. interface where user is, interface where DHCP server > is do... > > ip accounting output-packets or just plain old ip accounting. > > you should then do show ip account. > > This should show you the ip address 255.255.255.255 being helpered to > whatever your address is. At this point take a note of the mac address of > the requester. > > See if it is coming through to your server. > > Now..If it is then the cisco devices are working properly, back to the > drawing board. > > If it isn't getting to the server then come back. I have encountered a few > gotchas doing this before. > > Hope this helps. > > -Original Message- > From: Larry Lamb [mailto:[EMAIL PROTECTED]] > Sent: 23 February 2001 10:15 > To: [EMAIL PROTECTED] > Subject: Re: DHCP- Advise / Suggestions Apprciated > > > Everything I've found on Cisco tells me that multiple helper addresses are > supported and I would have to assume that it's forwarding the packet to both > helper address and is taking the response from the first machine to respond. > Any chance you can define part of the scope on each server? This would > ultimately solve the problem. Without a sniffer on both segments it's going > to be difficult to tell exactly what's happening unless someone has already > worked with this and has more input. > > "Gayathri" wrote in message <975b6q$d4v$[EMAIL PROTECTED]>... > >Firstly, sorry for the repeated submission, I dont see my psoting under > the > >main heading so I am forced to post it again.. > > > >here is my question... > > > > I have 2 DHCP servers and I have defined both the IP helper addressess in > >our routers > > > >Now, if a client quieries for an IP, which of the servers will respond > >first? > > > >The problem I have is we have defined one subnet in DHCP Server and not in > >the other. > > > >When this user is querying for an IP , he is not getting a response. > > > >interface Ethernet0 > > ip address 10.X.X.X 255.255.0.0 > > ip helper-address 10.X.1.X > > ip helper-address 10.X.1.Y > > > >The said subnet is defined in the DHCP server 10.102.1.Y but, still there > >is no response. when the client requests. > > > >The main reason we have 2 DHCP servers is for redundancy. > > > >Please note that they are independant of each other . > > > >Does this mean that , when the client is requesting, the router first > >forwards to the first DHCP server and since it is not getting a response , > >is dropping it? > > > >Thanks > > > >Gayathri > > > > > > > > > > > >_ > >FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > > > > _ > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > _ > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > _ > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: DHCP- Advise / Suggestions Apprciated
Or turn debug on and watch the communication happen. Mel L. Chandler, A+, Network+, MCNE, MCP+I, MCSE, CCNA [EMAIL PROTECTED] Network Analyst Information Services PMI Delta Dental (562) 467-6627 -Original Message- From: McCallum, Robert [mailto:[EMAIL PROTECTED]] Sent: Friday, February 23, 2001 2:44 AM To: 'Larry Lamb'; [EMAIL PROTECTED] Subject: RE: DHCP- Advise / Suggestions Apprciated Quick and easy way to find out if the packet is reaching each segment is . On each interface i.e. interface where user is, interface where DHCP server is do... ip accounting output-packets or just plain old ip accounting. you should then do show ip account. This should show you the ip address 255.255.255.255 being helpered to whatever your address is. At this point take a note of the mac address of the requester. See if it is coming through to your server. Now..If it is then the cisco devices are working properly, back to the drawing board. If it isn't getting to the server then come back. I have encountered a few gotchas doing this before. Hope this helps. -Original Message- From: Larry Lamb [mailto:[EMAIL PROTECTED]] Sent: 23 February 2001 10:15 To: [EMAIL PROTECTED] Subject: Re: DHCP- Advise / Suggestions Apprciated Everything I've found on Cisco tells me that multiple helper addresses are supported and I would have to assume that it's forwarding the packet to both helper address and is taking the response from the first machine to respond. Any chance you can define part of the scope on each server? This would ultimately solve the problem. Without a sniffer on both segments it's going to be difficult to tell exactly what's happening unless someone has already worked with this and has more input. "Gayathri" wrote in message <975b6q$d4v$[EMAIL PROTECTED]>... >Firstly, sorry for the repeated submission, I dont see my psoting under the >main heading so I am forced to post it again.. > >here is my question... > > I have 2 DHCP servers and I have defined both the IP helper addressess in >our routers > >Now, if a client quieries for an IP, which of the servers will respond >first? > >The problem I have is we have defined one subnet in DHCP Server and not in >the other. > >When this user is querying for an IP , he is not getting a response. > >interface Ethernet0 > ip address 10.X.X.X 255.255.0.0 > ip helper-address 10.X.1.X > ip helper-address 10.X.1.Y > >The said subnet is defined in the DHCP server 10.102.1.Y but, still there >is no response. when the client requests. > >The main reason we have 2 DHCP servers is for redundancy. > >Please note that they are independant of each other . > >Does this mean that , when the client is requesting, the router first >forwards to the first DHCP server and since it is not getting a response , >is dropping it? > >Thanks > >Gayathri > > > > > >_ >FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: DHCP- Advise / Suggestions Apprciated
Just curious here, but what are you running as your DHCP server? Mel L. Chandler, A+, Network+, MCNE, MCP+I, MCSE, CCNA [EMAIL PROTECTED] Network Analyst Information Services PMI Delta Dental (562) 467-6627 -Original Message- From: Gayathri [mailto:[EMAIL PROTECTED]] Sent: Friday, February 23, 2001 12:32 AM To: [EMAIL PROTECTED] Subject: DHCP- Advise / Suggestions Apprciated Firstly, sorry for the repeated submission, I dont see my psoting under the main heading so I am forced to post it again.. here is my question... I have 2 DHCP servers and I have defined both the IP helper addressess in our routers Now, if a client quieries for an IP, which of the servers will respond first? The problem I have is we have defined one subnet in DHCP Server and not in the other. When this user is querying for an IP , he is not getting a response. interface Ethernet0 ip address 10.X.X.X 255.255.0.0 ip helper-address 10.X.1.X ip helper-address 10.X.1.Y The said subnet is defined in the DHCP server 10.102.1.Y but, still there is no response. when the client requests. The main reason we have 2 DHCP servers is for redundancy. Please note that they are independant of each other . Does this mean that , when the client is requesting, the router first forwards to the first DHCP server and since it is not getting a response , is dropping it? Thanks Gayathri _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: DHCP- Advise / Suggestions Apprciated
Gayathri wrote: > interface Ethernet0 > ip address 10.X.X.X 255.255.0.0 > ip helper-address 10.X.1.X > ip helper-address 10.X.1.Y > > The main reason we have 2 DHCP servers is for redundancy. > With both servers in the same physical LAN, you have redundant servers but not redundant network paths nor redundant layer 2. > Please note that they are independant of each other . > For a more robust redundant solution with true failover and incremental updates, you might want to check out Cisco Network Registrar (CNR). > Does this mean that , when the client is requesting, the router first > forwards to the first DHCP server and since it is not getting a response , > is dropping it? > No, as far as the router is concerned, this is a very simple operation. When a UDP-based broadcast is received on an interface with a helper statement, the destination port is compared to the list of ones to be forwarded. If it's one of those, then the destination IP in the packet (255.255.255.255 or subnet broadcast) is overwritten by that specified in the helper-address. The packet is then routed just like any other. If the port type is DHCP/BOOTP then the router fills in the giaddr field so the DHCP server knows the correct client subnet. If there are two, three, twenty helper-address statements, then the router just repeats all this for each in turn. The first DHCP server in the list will likely get the request first, but which repsponse actually comes back first is a horse race. DHCP client and server code deals very gracefully with multiple responses (see the RFC). Marty Adkins Email: [EMAIL PROTECTED] Mentor Technologies Phone: 240-568-6526 133 National Business Pkwy WWW: http://www.mentortech.com Annapolis Junction, MD 20701Cisco CCIE #1289 _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: DHCP- Advise / Suggestions Apprciated
The problem you are having is due do DHCP functionality, not cisco/helper address related. The DHCP server which does not have a scope created on it is issuing a NACK for the IP request to the client. This is probably happening first because the NACKing server can tell that it is not configured with a scope for the requesting net faster than the assigning server can do a lookup and find a valid IP to assign. The client gets the NACK first and gives up. You can solve this one of two ways: Remove the helper address pointing to the second server. If its not configured to serve that subnet, then you are not gaining anything by having the helper address there, and actually causing you a problem. Alternately, if you want redundancy, split the scope between the two servers (as someone else has already suggested). Each DHCP server must have scopes defined on it for the nets it is receiving requests from or else it will generate the NACK. I have this problem all the time when an enterprising user installs NT Server with "all the options" (including DHCP Server) on their workstation. The enterprising user doesn't know anything about DHCP, leaves the scope empty (default), and DHCP on his broadcast domain grinds to a hault as his box starts NACKing valid requests. -S. Gayathri wrote: > > Firstly, sorry for the repeated submission, I dont see my psoting under the > main heading so I am forced to post it again.. > > here is my question... > > I have 2 DHCP servers and I have defined both the IP helper addressess in > our routers > > Now, if a client quieries for an IP, which of the servers will respond > first? > > The problem I have is we have defined one subnet in DHCP Server and not in > the other. > > When this user is querying for an IP , he is not getting a response. > > interface Ethernet0 > ip address 10.X.X.X 255.255.0.0 > ip helper-address 10.X.1.X > ip helper-address 10.X.1.Y > > The said subnet is defined in the DHCP server 10.102.1.Y but, still there > is no response. when the client requests. > > The main reason we have 2 DHCP servers is for redundancy. > > Please note that they are independant of each other . > > Does this mean that , when the client is requesting, the router first > forwards to the first DHCP server and since it is not getting a response , > is dropping it? > > Thanks > > Gayathri > > _ > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: DHCP- Advise / Suggestions Apprciated
>Firstly, sorry for the repeated submission, I dont see my psoting under the >main heading so I am forced to post it again.. > >here is my question... > > I have 2 DHCP servers and I have defined both the IP helper addressess in >our routers > >Now, if a client quieries for an IP, which of the servers will respond >first? Assuming your helper addresses and topologies are correct, both servers have an equal chance of responding. Which server responds first will largely be a matter of chance, although, I suppose, there is a slightly greater chance that the first server in the list will get the message first. If the DHCP servers are truly independent, as would usually be the case, the client might very well receive more than one response. Can you verify, either from your servers yourself, with a sniffer, or even (worst case) a router debug, that the requests are reaching the servers? > >The problem I have is we have defined one subnet in DHCP Server and not in >the other. > >When this user is querying for an IP , he is not getting a response. > >interface Ethernet0 > ip address 10.X.X.X 255.255.0.0 > ip helper-address 10.X.1.X > ip helper-address 10.X.1.Y > >The said subnet is defined in the DHCP server 10.102.1.Y but, still there >is no response. when the client requests. > >The main reason we have 2 DHCP servers is for redundancy. > >Please note that they are independant of each other . > >Does this mean that , when the client is requesting, the router first >forwards to the first DHCP server and since it is not getting a response , >is dropping it? > >Thanks > >Gayathri > > > > > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: DHCP- Advise / Suggestions Apprciated
Quick and easy way to find out if the packet is reaching each segment is . On each interface i.e. interface where user is, interface where DHCP server is do... ip accounting output-packets or just plain old ip accounting. you should then do show ip account. This should show you the ip address 255.255.255.255 being helpered to whatever your address is. At this point take a note of the mac address of the requester. See if it is coming through to your server. Now..If it is then the cisco devices are working properly, back to the drawing board. If it isn't getting to the server then come back. I have encountered a few gotchas doing this before. Hope this helps. -Original Message- From: Larry Lamb [mailto:[EMAIL PROTECTED]] Sent: 23 February 2001 10:15 To: [EMAIL PROTECTED] Subject: Re: DHCP- Advise / Suggestions Apprciated Everything I've found on Cisco tells me that multiple helper addresses are supported and I would have to assume that it's forwarding the packet to both helper address and is taking the response from the first machine to respond. Any chance you can define part of the scope on each server? This would ultimately solve the problem. Without a sniffer on both segments it's going to be difficult to tell exactly what's happening unless someone has already worked with this and has more input. "Gayathri" wrote in message <975b6q$d4v$[EMAIL PROTECTED]>... >Firstly, sorry for the repeated submission, I dont see my psoting under the >main heading so I am forced to post it again.. > >here is my question... > > I have 2 DHCP servers and I have defined both the IP helper addressess in >our routers > >Now, if a client quieries for an IP, which of the servers will respond >first? > >The problem I have is we have defined one subnet in DHCP Server and not in >the other. > >When this user is querying for an IP , he is not getting a response. > >interface Ethernet0 > ip address 10.X.X.X 255.255.0.0 > ip helper-address 10.X.1.X > ip helper-address 10.X.1.Y > >The said subnet is defined in the DHCP server 10.102.1.Y but, still there >is no response. when the client requests. > >The main reason we have 2 DHCP servers is for redundancy. > >Please note that they are independant of each other . > >Does this mean that , when the client is requesting, the router first >forwards to the first DHCP server and since it is not getting a response , >is dropping it? > >Thanks > >Gayathri > > > > > >_ >FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: DHCP- Advise / Suggestions Apprciated
Everything I've found on Cisco tells me that multiple helper addresses are supported and I would have to assume that it's forwarding the packet to both helper address and is taking the response from the first machine to respond. Any chance you can define part of the scope on each server? This would ultimately solve the problem. Without a sniffer on both segments it's going to be difficult to tell exactly what's happening unless someone has already worked with this and has more input. "Gayathri" wrote in message <975b6q$d4v$[EMAIL PROTECTED]>... >Firstly, sorry for the repeated submission, I dont see my psoting under the >main heading so I am forced to post it again.. > >here is my question... > > I have 2 DHCP servers and I have defined both the IP helper addressess in >our routers > >Now, if a client quieries for an IP, which of the servers will respond >first? > >The problem I have is we have defined one subnet in DHCP Server and not in >the other. > >When this user is querying for an IP , he is not getting a response. > >interface Ethernet0 > ip address 10.X.X.X 255.255.0.0 > ip helper-address 10.X.1.X > ip helper-address 10.X.1.Y > >The said subnet is defined in the DHCP server 10.102.1.Y but, still there >is no response. when the client requests. > >The main reason we have 2 DHCP servers is for redundancy. > >Please note that they are independant of each other . > >Does this mean that , when the client is requesting, the router first >forwards to the first DHCP server and since it is not getting a response , >is dropping it? > >Thanks > >Gayathri > > > > > >_ >FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
