From: CCIE3000 (ccie3000@googlemail.com)
Date: Wed Aug 13 2008 - 04:04:35 ART
Hi Huan,
I suppose it depends on how the lab is marked, if this was autoverify then
something silly like this could loose you the points.
Something to be aware of.
Regards,
Si
On 8/13/08, Huan Pham <Huan.Pham@peopletelecom.com.au> wrote:
>
>
> Hi Si,
>
> I do not see anything wrong with the first option
>
> ip dhcp excluded-address 10.1.64.*0* 10.1.64.99
> ip dhcp excluded-address 10.1.64.101 10.1.64.*255*
>
> Technically, you do not even need to exclude the IP address of the
> router interface, so if your router is 10.1.64.1, you only need
>
> ip dhcp excluded-address 10.1.64.*2* 10.1.64.99
> ip dhcp excluded-address 10.1.64.101 10.1.64.254
>
> But I see nothing wrong with being over-conservative in the first case
> when we exclude the addresses that the router already knows as not
> useable.
>
>
>
> http://www.cisco.com/en/US/docs/ios/ipaddr/configuration/guide/iad_dhcp_
> svr_cfg_ps6350_TSD_Products_Configuration_Guide_Chapter.html#wp1046221
>
>
> Excluding IP Addresses
>
> Perform this task to specify IP addresses (excluded addresses) that the
> DHCP server should not assign to clients.
>
> The IP address configured on the router interface is automatically
> excluded from the DHCP address pool. The DHCP server assumes that all
> other IP addresses in a DHCP address pool subnet are available for
> assigning to DHCP clients.
>
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> CCIE3000
> Sent: Tuesday, 12 August 2008 7:21 PM
> To: Cisco certification
> Subject: Is it wrong?? DHCP excluded addresses
>
> Hi Guys,
>
> What's your opinion on the following.
> From the IE workbooks I've got in the habit of configuring something
> along the following when doing DHCP stuff.
> If you have a /24 bit pool and you want to only assign 10.1.64.100 via
> dhcp
>
> ip dhcp excluded-address 10.1.64.*0* 10.1.64.99 ip dhcp excluded-address
> 10.1.64.101 10.1.64.*255*
>
> Now technically you only need to do the following:
>
> ip dhcp excluded-address 10.1.64.*1*10.1.64.99 ip dhcp excluded-address
> 10.1.64.101 10.1.64.*254*
> **
> But is the first wrong if there are aren't any statements saying you
> can't do it in such a manner.
>
> I think the first is okay, can you think of a reason that if using such
> a method you are doing something wrong?
>
> Thanks,
> Si.
>
>
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