From: ALL From_NJ (all.from.nj@gmail.com)
Date: Tue Feb 03 2009 - 18:03:15 ARST
Hey Team,
Some info on summary addresses and route summarization ... (I need to
practice the summarization as it has been a while since I have worked with
RIP ...)
Han, your question below begs for a quick lab test. ;-)
More from the docs: ... Default route (watch the ugly word wrap):
http://www.cisco.com/en/US/docs/ios/iproute/configuration/guid/irp_cfg_info_p
rot_ps6350_TSD_Products_Configuration_Guide_Chapter.html#wp1054906
Cisco IOS software will source the default network with RIP if one of the
following conditions is met:
The ip default-network command is configured.
The default-information originate command is configured.
The default route is learned via another routing protocol or static route
and then redistributed into RIP.
Summary-address (watch the ugly word wrap):
http://www.cisco.com/en/US/docs/ios/iproute/command/reference/irp_rip.html#wp
1012075
--) ip summary-address rip
To configure a summary aggregate address under an interface for the Routing
Information Protocol (RIP), use the ip summary-address rip command in
interface configuration mode. To disable summarization of the specified
address or subnet, use the no form of this command.
ip summary-address rip ip-address ip-network-mask
--) Usage Guidelines
The ip summary-address rip command is used to summarize an address or subnet
under a specific interface. RIP automatically summarizes to classful network
boundaries. Only one summary address can be configured for each classful
subnet.
On Tue, Feb 3, 2009 at 1:25 PM, Han Solo <emaillists@me.com> wrote:
> Rip can generate a 0/0 route without having a 0/0 already in it's routing
> table , can it do this same thing for say summary routes assume the
> following:
>
> router rip
> version 2
> net 176.1.0.0
> no auto-summary
>
> interface f0/0
> ip summary-address rip 176.1.0.0 255.255.0.0
> ip summary-address rip 150.1.0.0 255.255.0.0
>
>
> So will rip advertise that summary , even though it is not under the rip
> process as an advertised network ?
>
>
> Han Solo
> May the force be with you
>
>
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