Podem deixar.. Parece q meus IPs acabaram.. ;o)
Parace q vou ter q começar a pensar em dividir a rede...
E nada como uma boa lida (destaque do "man dhcpd.conf" abaixo) para
constatar o motivo do problema...
The DHCP server checks IP addresses to see if they are in use before
allocating them to clients. It does this by sending an ICMP Echo
request message to the IP address being allocated. If no ICMP Echo
reply is received within a second, the address is assumed to be
free. This is only done for leases that have been specified in range
statements, and only when the lease is thought by the DHCP server to be
free - i.e., the DHCP server or its failover peer has not
listed the lease as in use.
If a response is received to an ICMP Echo request, the DHCP server
assumes that there is a configuration error - the IP address is in use
by some host on the network that is not a DHCP client. It marks the
address as abanâdoned, and will not assign it to clients.
If a DHCP client tries to get an IP address, but none are available,
but there are abandoned IP addresses, then the DHCP server will attempt
to reclaim an abandoned IP address. It marks one IP address as free,
and then does
the same ICMP Echo request check described previously. If there
is no answer to the ICMP Echo request, the address is assigned to the
client.
The DHCP server does not cycle through abandoned IP addresses if the
first IP address it tries to reclaim is free. Rather, when the next
DCPDISCOVER comes in from the client, it will attempt a new allocation
using the same method described here, and will typically try a new IP
address.
Em Qua, 2006-02-22 às 12:23 -0300, Rejaine Monteiro escreveu:
> Ola lista,
>
> Meu servidor DHCP esta funcionando normalmente..
> Mas volta e meia uma maquina ou outra nao pega e/ou nao consegue renovar
> o endereço IP
>
> Quando isso acontece, noto que no dhcpd.leases aparece dezenas de
> entradas para a maquina que não consegue pegar o IP , tal como o exemplo
> abaixo:
>
> lease 172.22.10.208 {
> starts 3 2006/02/22 15:11:50;
> ends 3 2006/02/22 15:11:50;
> binding state abandoned;
> next binding state free;
> client-hostname "aceadm";
> }
> lease 172.22.10.135 {
> starts 3 2006/02/22 15:11:58;
> ends 3 2006/02/22 15:11:58;
> binding state abandoned;
> next binding state free;
> client-hostname "aceadm";
> }
>
> No /var/log/messages do servidor DHCP aparece o seguinte erro:
>
> dhcpd: DHCPDISCOVER from 00:e0:7d:a0:be:e8 via eth1
> dhcpd: ICMP Echo reply while lease 172.22.10.208 valid.
> dhcpd: Abandoning IP address 172.22.10.208: pinged before offer
>
> dhcpd: DHCPDISCOVER from 00:e0:7d:a0:be:e8 via eth1
> dhcpd: ICMP Echo reply while lease 172.22.10.135 valid.
> dhcpd: Abandoning IP address 172.22.10.135: pinged before offer
>
> e por ai vai..
>
> Não é problema de placa de rede/cabo, pois esse problema acontece
> aleatoriamente, para máquinas diferentes e em localizações diferentes...
> Acredito q seja mesmo problema do servidor DHCP
>
> Quando isso ocorre, normalmente acabo por limpar todo o dhcpd.leases e o
> named e acaba resolvendo temporariamente o problema.. Mas sempre ocorre
> novamente..
>
> Alguem tem alguma idea do que pode ser isso??
>
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