From: Kenneth Wygand (KWygand@customonline.com)
Date: Fri Jul 02 2004 - 14:05:52 GMT-3
Geert,
Yes, you should -definitely- exclude the default gateway address as well as any other reserved addresses in that range, including DNS servers, HSRP addresses, etc.
Think of it this way - what if your default gateway is not pingable for some reason (not a real interface [lab environment], interface down temporarily, ICMP requests/responses blocked, etc.) Would you want your default-gateway IP address(es) assigned to any of your dynamic clients at -any- time? Of course not, so just exclude it.
HTH,
Ken
________________________________
From: nobody@groupstudy.com on behalf of Geert Nijs
Sent: Fri 7/2/2004 12:15 PM
To: ccielab@groupstudy.com
Subject: DHCP excluded addresses
Hi group,
If the -real thing- lab asks to configure a simple DHCP server to provide ip addresses to clients,
would you - by default - exclude the routers addresses ??
Suppose you have two routers R3 and R4 on a subnet, together with a IOS DHCP server.....
If i am not mistaken, i read somewere that the IOS DHCP server will ping an ip address 2 times,
before assigning the address to a client. If this is true (?), you really don't need to exclude
the router's ip address. The IOS DHCP server will notice that the two ip addresses are in use.....
So if i don't exclude them, will Cisco deduct points for that ?
Regards,
Geert
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