Ok, I'll do that tonight, these IP addresses also need to be excluded, cause they are wireless accesspoints.
Service dhcp is enabled on the C1841 (is enabled by default) I'll follow up, however, I doubt that excluding it's own IP will make this work..... Maarten -- Network Engineer | eBay / Marktplaats.nl Randweg 25 | 8304 AS Emmeloord E-mail: [EMAIL PROTECTED] | Mobile: +31 6 55 1 222 47 -----Original Message----- From: Aaron Riemer [mailto:[EMAIL PROTECTED] Sent: Thursday, August 23, 2007 3:20 PM To: Moerman, Maarten; 'Simon'; [email protected] Subject: RE: [c-nsp] DHCP problems trunked C2924 to C1841 Hi, You are excluding the wrong addresses with the ip dhcp excluded-address command. You need to exclude the router ip addresses for each subnet. Also make sure the dhcp service is running with the 'service dhcp' command. Aaron. -----Original Message----- From: Moerman, Maarten [mailto:[EMAIL PROTECTED] Sent: Thursday, 23 August 2007 8:56 PM To: Simon; Aaron Riemer; [email protected] Cc: Aaron Riemer Subject: RE: [c-nsp] DHCP problems trunked C2924 to C1841 Yes, I have IP helper addresses on the vlan interfaces on the switch. See this snippet: interface VLAN2 description vlan 2 ip helper-address 172.23.0.1 no ip directed-broadcast no ip route-cache shutdown ! Only... the vlan interface stays down, but that makes sense, cause it is not a L3 switch. Am wondering if that might be the problem... but such a simple thing as a DHCP request should pass.. And... All the vlan's are directly connected to the router, so a helper-address wouldn't even be needed, as the requests should arrive over the trunk to the subinterface on the C1841. And yes, there is connectivity with static IP's, everything is working on static IP's, but dhcp request don't arrive. maarten -- Network Engineer | eBay / Marktplaats.nl Randweg 25 | 8304 AS Emmeloord E-mail: [EMAIL PROTECTED] | Mobile: +31 6 55 1 222 47 -----Original Message----- From: Simon [mailto:[EMAIL PROTECTED] Sent: Thursday, August 23, 2007 2:49 PM To: 'Aaron Riemer'; Moerman, Maarten; [email protected] Subject: RE: [c-nsp] DHCP problems trunked C2924 to C1841 Something else you should check is the IP-helper address will need to be enabled if you are using one DHCP server Simon -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Aaron Riemer Sent: 23 August 2007 13:45 To: 'Moerman, Maarten'; [email protected] Subject: Re: [c-nsp] DHCP problems trunked C2924 to C1841 Hi there, You mention you have a problem with DHCP. Does this mean that you have connectivity when assigning static IP's to workstations on each respective vlan? If not I would check two things. 1. The native vlan of the switch is vlan 1 (should be by default) 2. Check that all vlan's are allowed over the trunk. Cheers, Aaron. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Moerman, Maarten Sent: Thursday, 23 August 2007 7:54 PM To: [email protected] Subject: [c-nsp] DHCP problems trunked C2924 to C1841 Hello, I've got a little problem on my home network regarding DHCP. I have a C1841, and a C2924XL, which have a trunk between them. I've setup 3 vlans, everything is working fine , however I can't get to get DHCP working on the C1841. I'd like to have the first vlan dhcp being served by a linux server (will be moved to the cisco in the future), and the 2nd and third vlan dhcp being served by the C1841. This is my config: FastEthernet0/22 of the C2924XL is connected to FastEthernet0/0 of the C1841. ip dhcp excluded-address 172.24.0.2 ip dhcp excluded-address 172.24.0.3 ! ip dhcp pool buren network 172.24.0.0 255.255.255.0 default-router 172.24.0.1 dns-server 212.142.28.66 ! ip dhcp pool maarten network 172.25.0.0 255.255.255.0 default-router 172.25.0.1 dns-server 212.142.28.66 ! interface FastEthernet0/0.1 encapsulation dot1Q 1 native ip address 172.23.0.1 255.255.255.0 ip nat inside ip virtual-reassembly no ip route-cache ! interface FastEthernet0/0.2 encapsulation dot1Q 2 ip address 172.24.0.1 255.255.255.0 ip access-group 124 in ip nat inside ip virtual-reassembly no ip route-cache ! interface FastEthernet0/0.3 encapsulation dot1Q 3 ip address 172.25.0.1 255.255.255.0 ip access-group 125 in ip helper-address 172.23.0.1 ip nat inside ip virtual-reassembly no ip route-cache ! access-list 124 deny ip 172.24.0.0 0.0.0.255 172.23.0.0 0.0.0.255 access-list 124 deny ip 172.24.0.0 0.0.0.255 172.25.0.0 0.0.0.255 access-list 124 permit ip 172.24.0.0 0.0.0.255 any access-list 125 deny ip 172.25.0.0 0.0.0.255 172.23.0.0 0.0.0.255 access-list 125 deny ip 172.25.0.0 0.0.0.255 172.24.0.0 0.0.0.255 access-list 125 permit ip 172.25.0.0 0.0.0.255 any And of course a lot of other things which aren't interesting for this audience. ACL's arent' the problem I think, because with debugging I don't see them hitting the ACL's. This is my C2924Xl config: interface VLAN1 ip address 172.23.0.3 255.255.255.0 no ip directed-broadcast no ip route-cache ! interface VLAN2 description vlan 2 ip helper-address 172.23.0.1 no ip directed-broadcast no ip route-cache shutdown ! interface VLAN3 description vlan 3 ip helper-address 172.25.0.1 no ip directed-broadcast no ip route-cache shutdown ! interface FastEthernet0/21 switchport access vlan 2 spanning-tree portfast ! interface FastEthernet0/22 switchport trunk encapsulation dot1q switchport mode trunk end If I set all the debugging info there is, I cannot see any request for vlan2 + 3 passing by. Anyone have a clue? -- Network Engineer | eBay / Marktplaats.nl Randweg 25 | 8304 AS Emmeloord E-mail: [EMAIL PROTECTED] | Mobile: +31 6 55 1 222 47 _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
