From: gladston@br.ibm.com
Date: Tue Nov 23 2004 - 17:19:57 GMT-3
Thanks, but does I need something more in the case of Windows clients or
they will receive both default gateways from the DHCP server (172.16.123.1
and 172.16.123.3) and use the first as default gateway by default?
Cordially,
------------------------------------------------------------------
Gladston
"Edwards, Andrew M" <andrew.m.edwards@boeing.com>
23/11/2004 18:11
To
Alaerte Gladston Vidali/Brazil/IBM@IBMBR, <ccielab@groupstudy.com>
cc
Subject
RE: DHCP
This is when you will use IRDP (ICMP router discovery protocol) for the
router (R2) such that it can act as a host.
Under the gateway routers interface for the network segment you will use
the interface commands:
Ip irdp
Ip irdp address 172.16.123.1 preference 5
Ip irdp address 172.16.123.3 preference 10
And, Windoz hosts can use multiple default gateways. Try the first in
the list, if its not resonsive try second, etc.
Also, don't forget the other static addresses within the DHCP range that
need to be excluded (e.g. dns servers, netbios name server, tftp server,
etc.)
Here is a link from the doc cd on DHCP:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/
fipr_c/ipcprt1/1cfdhcp.htm
HTH
andy
-----Original Message-----
From: gladston@br.ibm.com [mailto:gladston@br.ibm.com]
Sent: Tuesday, November 23, 2004 11:33 AM
To: ccielab@groupstudy.com
Subject: DHCP
I am working on the following configuration:
r1, r2 and r3 are connected to the same Vlan.
r1 is dhcp server; r2 is dhcp client.
ip dhcp excluded-address 172.16.123.1 172.16.123.3
!
ip dhcp pool Pooldhcp
network 172.16.123.0 255.255.255.0
dns-server 172.16.123.100
netbios-name-server 172.16.123.150
domain-name web.com
default-router 172.16.123.1 172.16.123.3
lease infinite
I was expecting r2 to receive both default-routers, but it just points
to the first, even when I shutdown router r1.
Is it the same behavior of Windows clients for dhcp client?
r2#sh ip rou
Default gateway is 172.16.123.1
Host Gateway Last Use Total Uses Interface
ICMP redirect cache is empty
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