Re: OT- IP Helper-Address

Thanks for input.
I had a look at the link, but no cisco document referring it.

I was looking for a cisco document explaining it l but no luck.

Regards
Asif

On 11/9/2010 11:53 AM, karim jamali wrote:
> Hello Asif,
>
> The answer is that that the Router/Switch will send it to all at the
> same time. The configurations pasted below are taken from the
> following link. The debug messages tell the whole story.
>
> https://supportforums.cisco.com/thread/160572
>
> R3 (F0/1) <--LAN--> (F0/1) R1
>
> R3:
>
> interface FastEthernet0/1
>
> description R1
>
> ip address 192.168.13.3 255.255.255.0
>
> ip helper-address 192.168.34.4
>
> ip helper-address 192.168.34.5
>
> R1:
>
> interface FastEthernet0/1
>
> description R3
>
> ip address dhcp
>
> shutdown
>
> duplex auto
>
> speed auto
>
> no clns route-cache
>
> R1(config-if)#int f0/1
>
> R1(config-if)#no shut
>
> R3#
>
> 00:05:22: DHCPD: setting giaddr to 192.168.13.3.
>
> 00:05:22: DHCPD: BOOTREQUEST from
> 0063.6973.636f.2d63.6130.302e.3166.6338.2e30.3030.362d.4661.302f.31
> forwarded to 192.168.34.4.
>
> 00:05:22: DHCPD: BOOTREQUEST from
> 0063.6973.636f.2d63.6130.302e.3166.6338.2e30.3030.362d.4661.302f.31
> forwarded to 192.168.34.5.
>
> 00:05:23: IP-EIGRP(Default-IP-Routing-Table:1): Neighbor 0.0.0.0 not
> on common subnet for FastEthernet0/1
>
> 00:05:25: DHCPD: setting giaddr to 192.168.13.3.
>
> 00:05:25: DHCPD: BOOTREQUEST from
> 0063.6973.636f.2d63.6130.302e.3166.6338.2e30.3030.362d.4661.302f.31
> forwarded to 192.168.34.4.
>
> 00:05:25: DHCPD: BOOTREQUEST from
> 0063.6973.636f.2d63.6130.302e.3166.6338.2e30.3030.362d.4661.302f.31
> forwarded to 192.168.34.5.
>
> 00:05:27: DHCPD: setting giaddr to 192.168.13.3.
>
> 00:05:27: DHCPD: BOOTREQUEST from
> 0063.6973.636f.2d63.6130.302e.3166.6338.2e30.3030.362d.4661.302f.31
> forwarded to 192.168.34.4.
>
> 00:05:27: DHCPD: BOOTREQUEST from
> 0063.6973.636f.2d63.6130.302e.3166.6338.2e30.3030.362d.4661.302f.31
> forwarded to 192.168.34.5.
>
> HTH,
>
>
>
> On Tue, Nov 9, 2010 at 11:45 AM, Asif Vanoo <asif_at_vanoo.net
> <mailto:asif_at_vanoo.net>> wrote:
>
> Hello,
>
> My question is _*"Which IP Helper-address statement will take
> priority"*_ as per mentioned config.
> I didnt find any document related to _*IP Helper-Address Priority*_,
>
> interface FastEthernet1
> description Bldg 1 Network A
> ip address 172.69.93.1 255.255.255.192
> ip helper-address 172.69.2.74
> ip helper-address 172.69.2.123
> ip helper-address 172.69.30.31
> ip helper-address 172.69.2.121
> ip helper-address 172.71.84.140
> ip helper-address 172.69.67.35
>
> Any input with supporting cisco document will be helpful
>
> Thanks
> Asif
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
>
>
>
>
>
>
>
>
>
>
> --
> KJ

Blogs and organic groups at http://www.ccie.net
Received on Tue Nov 09 2010 - 12:08:44 ART