From: GAURAV MADAN (gauravmadan1177@gmail.com)
Date: Tue Nov 25 2008 - 07:15:15 ARST
Thanks a lot Narbik
The post was really really useful and cleared doubt .
Thnx again
Gaurav Madan.
On Tue, Nov 25, 2008 at 12:30 PM, Narbik Kocharians <narbikk@gmail.com>wrote:
> I guess the fonts went crazy on me, but the IP address of R2's S0/0.23
> should be ".2" and the IP address of R3's S0/0.32 should be ".3".
>
> On Mon, Nov 24, 2008 at 10:55 PM, Narbik Kocharians <narbikk@gmail.com
> >wrote:
>
> > *OK check this lab and i know it will help you understand this command
> > totally:*
> >
> >
> > R1 (S0/0.12)----------------------(S0/0.21) R2
> > (S0/0.23)----------------------(S0/0.32) R3
> > .1 *10.1.12.0/24* .2
> > .3
> *
> > 10.1.23.0 /24 * .4
> >
> > The connection between the routers are frame-relay all configured in a
> P2P
> > manner, but understand that it could be any kinda connection.
> > R1 has 3 loopback interfaces (2.0.0.0/8, 3.0.0.0/8 and 4.0.0.0/8).
> >
> > *Task 1*
> >
> > * *
> >
> > Configure Eigrp on all routers and advertise their directly connected
> > interfaces in AS 100. R1 should NOT advertise network 4.0.0.0 /8 in this
> > routing protocol.
> >
> >
> >
> > * *
> >
> > *On R1*
> >
> > * *
> >
> > R1(config)#Router eigrp 100
> >
> > R1(config-router)#no au
> >
> > R1(config-router)#netw 2.0.0.0
> >
> > R1(config-router)#netw 3.0.0.0
> >
> > R1(config-router)#netw 10.1.12.1 0.0.0.0
> >
> >
> >
> > *On R2*
> >
> > * *
> >
> > R2(config)#Router eigrp 100
> >
> > R2(config-router)#no au
> >
> > R2(config-router)#network 10.1.12.2 0.0.0.0
> >
> > R2(config-router)#network 10.1.23.2 0.0.0.0
> >
> >
> >
> > *On R3*
> >
> >
> >
> > R3(config)#Router eigrp 100
> >
> > R3(config-router)#no au
> >
> > R3(config-router)#network 10.1.23.3 0.0.0.0
> >
> >
> >
> > *To verify the configuration:*
> >
> > * *
> >
> > *On R1*
> >
> > * *
> >
> > *R1#Show ip route eigrp*
> >
> >
> >
> > 10.0.0.0/24 is subnetted, 2 subnets
> >
> > D 10.1.23.0 [90/2681856] via 10.1.12.2, 00:01:55, Serial0/0.12
> >
> >
> >
> > *On R2*
> >
> >
> >
> > *R2#Show ip route eigrp*
> >
> >
> >
> > D 2.0.0.0/8 [90/2297856] via 10.1.12.1, 00:02:21, Serial0/0.21
> >
> > D 3.0.0.0/8 [90/2297856] via 10.1.12.1, 00:02:21, Serial0/0.21
> >
> > * *
> >
> > *On R3*
> >
> >
> >
> > *R3#Show ip route eigrp*
> >
> >
> >
> > D 2.0.0.0/8 [90/2809856] via 10.1.23.2, 00:01:57, Serial0/0.32
> >
> > D 3.0.0.0/8 [90/2809856] via 10.1.23.2, 00:01:57, Serial0/0.32
> >
> > 10.0.0.0/24 is subnetted, 2 subnets
> >
> >
> >
> > D 10.1.12.0 [90/2681856] via 10.1.23.2, 00:01:57, Serial0/0.32**
> >
> >
> >
> > * *
> >
> > *Task 2*
> >
> >
> >
> > Configure R1 such that R2 and R3 use network 2.0.0.0 /8 as candidate
> > default.
> >
> >
> >
> >
> >
> > *On R1*
> >
> >
> >
> > R1(config)#*ip default-network 2.0.0.0*
> >
> >
> >
> > *To verify the configuration:*
> >
> > * *
> >
> > *On R2*
> >
> >
> >
> > *R2#Show ip route eigrp*
> >
> > * *
> >
> > *D* 2.0.0.0/8 [90/2297856] via 10.1.12.1, 00:00:41, Serial1/0.21*
> >
> > D 3.0.0.0/8 [90/2297856] via 10.1.12.1, 00:07:55, Serial1/0.21
> >
> >
> >
> > *Note the asterisk reveals that R2 is using that network as the candidate
> > default.*
> >
> >
> >
> > *To test the configuration:*
> >
> > * *
> >
> > *On R2*
> >
> >
> >
> > *R2#Ping 4.4.4.4*
> >
> >
> >
> > Type escape sequence to abort.
> >
> > Sending 5, 100-byte ICMP Echos to 4.4.4.4, timeout is 2 seconds:
> >
> > !!!!!
> >
> > Success rate is 100 percent (5/5), round-trip min/avg/max = 8/26/60 ms
> >
> >
> >
> > *To verify the configuration on R3:*
> >
> >
> >
> > *R3#Show ip route eigrp*
> >
> >
> >
> > *D* 2.0.0.0/8 [90/2809856] via 10.1.23.2, 00:04:24, Serial1/0.32*
> >
> > D 3.0.0.0/8 [90/2809856] via 10.1.23.2, 00:10:39, Serial1/0.32
> >
> > 10.0.0.0/24 is subnetted, 2 subnets
> >
> > D 10.1.12.0 [90/2681856] via 10.1.23.2, 00:10:39, Serial1/0.32
> >
> > * *
> >
> > *R3#Ping 4.4.4.4*
> >
> >
> >
> > Type escape sequence to abort.
> >
> > Sending 5, 100-byte ICMP Echos to 4.4.4.4, timeout is 2 seconds:
> >
> > !!!!!
> >
> > Success rate is 100 percent (5/5), round-trip min/avg/max = 4/32/92 ms
> >
> >
> >
> >
> >
> > *Task 3*
> >
> >
> >
> > Configure R2 such that *R3* does NOT use network 2.0.0.0 /8 as a
> candidate
> > default.
> >
> >
> >
> >
> >
> > *On R2*
> >
> >
> >
> > R2(config)#router eigrp 100
> >
> > R2(config-router)#*no default-information allowed out*
> >
> >
> >
> > R2#Clear ip eigrp neighbor
> >
> >
> >
> > *Note the "no default-information allowed out" disables the
> redistribution
> > of default route, meaning R3 will no longer use network 2.0.0.0 /8 as
> its
> > candidate default, but it will still have that network in its routing
> table.
> > *
> >
> >
> >
> > *To verify the configuration:*
> >
> > * *
> >
> > *On R2*
> >
> >
> >
> > *R2#Show ip route eigrp *
> >
> >
> >
> > *D* 2.0.0.0/8* [90/2297856] via 10.1.12.1, 00:00:25, Serial1/0.21
> >
> > D 3.0.0.0/8 [90/2297856] via 10.1.12.1, 00:00:25, Serial1/0.21
> >
> >
> >
> > *On R3*
> >
> >
> >
> > *R3#Show ip route eigrp*
> >
> >
> >
> > *D 2.0.0.0/8* [90/2809856] via 10.1.23.2, 00:01:04, Serial1/0.32
> >
> > D 3.0.0.0/8 [90/2809856] via 10.1.23.2, 00:01:04, Serial1/0.32
> >
> > 10.0.0.0/24 is subnetted, 2 subnets
> >
> > D 10.1.12.0 [90/2681856] via 10.1.23.2, 00:01:06, Serial1/0.32
> >
> >
> >
> > *To test the configuration:*
> >
> > * *
> >
> > *On R3*
> >
> > * *
> >
> > * *
> >
> > *R3#Ping 4.4.4.4*
> >
> >
> >
> > Type escape sequence to abort.
> >
> > Sending 5, 100-byte ICMP Echos to 4.4.4.4, timeout is 2 seconds:
> >
> > .....
> >
> > Success rate is 0 percent (0/5)
> >
> >
> >
> >
> >
> > *Task 4*
> >
> >
> >
> > Remove the command that was entered in the previous task from R2, and
> > configure R3 to accomplish the same task, if this configuration is
> performed
> > correctly, R3 should NOT use network 2.0.0.0 /8 as the candidate
> default.
> >
> >
> >
> >
> >
> > *To remove the command from R2:*
> >
> >
> >
> > *On R2*
> >
> >
> >
> > R2(config)#router eigrp 100
> >
> > R2(config-router)#*default-information allowed out*
> >
> >
> >
> > R2#cle ip eigrp neighbor
> >
> >
> >
> > *To verify R2's configuration:*
> >
> > * *
> >
> > *On R2*
> >
> >
> >
> > *R2#sh run | s router eigrp *
> >
> >
> >
> > router eigrp 100
> >
> > network 10.1.12.2 0.0.0.0
> >
> > network 10.1.23.2 0.0.0.0
> >
> > no auto-summary
> >
> >
> >
> > *To verify the configuration on R3*
> >
> > * *
> >
> > *On R3*
> >
> >
> >
> > *R3#Show ip route eigrp*
> >
> > * *
> >
> > *D* 2.0.0.0/8* [90/2809856] via 10.1.23.2, 00:00:58, Serial1/0.32
> >
> > D 3.0.0.0/8 [90/2809856] via 10.1.23.2, 00:00:58, Serial1/0.32
> >
> > 10.0.0.0/24 is subnetted, 2 subnets
> >
> > D 10.1.12.0 [90/2681856] via 10.1.23.2, 00:01:00, Serial1/0.32
> >
> >
> >
> > *Note R3 uses network 2.0.0.0 /8 as candidate default. To configure R3
> to
> > accomplish the same task:*
> >
> >
> >
> > *On R3*
> >
> >
> >
> > R3(config)#router eigrp 100
> >
> > R3(config-router)#*no default-information allowed in*
> >
> >
> >
> > R3#cle ip eigrp nei
> >
> >
> >
> > *Note from R3's perspective it should disable the redistribution of the
> > default route inbound, therefore, the direction of the command is
> configured
> > inbound. *
> >
> > * *
> >
> > *Note if R2 enters the "no default-information allowed in", then,
> > neither R2 nor R3 will receive the default route.*
> >
> >
> >
> > *To test and verify the configuration:*
> >
> > * *
> >
> > *On R3*
> >
> >
> >
> > *R3#Show ip route eigrp*
> >
> >
> >
> > *D 2.0.0.0/8* [90/2809856] via 10.1.23.2, 00:02:38, Serial1/0.32
> >
> > D 3.0.0.0/8 [90/2809856] via 10.1.23.2, 00:02:38, Serial1/0.32
> >
> > 10.0.0.0/24 is subnetted, 2 subnets
> >
> > D 10.1.12.0 [90/2681856] via 10.1.23.2, 00:02:38, Serial1/0.32
> >
> >
> >
> > *Task 5*
> > **
> > **NOW LET'S CONNECT THE THREE ROUTERS TO THE SAME ETHERNET SEGMENT WITH A
> > NETWORK ADDRESS OF 10.1.1.0 /24, WHERE R1'S IP ADDRESS IS 10.1.1.1/24,
> > R2'S IP ADDRESS IS 10.1.1.2/24 AND R3'S IP ADDRESS IS 10.1.1.3/24.
> > R1 IS STILL CONFIGURED WITH THE THREE LOOPBACK INTERFACES 2.0.0.0/8,
> > 3.0.0.0/8 AND 4.0.0.0/8.
> >
> > *Task 6*
> > Configure Eigrp on all routers and advertise their directly connected
> > interfaces in AS 100. R1 should NOT advertise network 4.0.0.0 /8 in this
> > routing protocol.
> > *
> >
> >
> >
> >
> >
> > On R1
> >
> >
> >
> > R1(config-if)#router eigrp 100
> >
> > R1(config-router)#no au
> >
> > R1(config-router)#network 2.0.0.0
> >
> > R1(config-router)#Network 3.0.0.0
> >
> > R1(config-router)#Network 10.1.1.1 0.0.0.0
> >
> >
> >
> > On R2
> >
> >
> >
> > R2(config)#Router eigrp 100
> >
> > R2(config-router)#no au
> >
> > R2(config-router)#network 10.1.1.2 0.0.0.0
> >
> >
> >
> > On R3
> >
> >
> >
> > R3(config)#Router eigrp 100
> >
> > R3(config-router)#no au
> >
> > R3(config-router)#network 10.1.1.3 0.0.0.0
> >
> >
> >
> > To verify the configuration
> >
> >
> >
> > On R2
> >
> >
> >
> > R2#Show ip route eigrp
> >
> >
> >
> > D 2.0.0.0/8 [90/409600] via 10.1.1.1, 00:15:21, Ethernet0/0
> >
> > D 3.0.0.0/8 [90/409600] via 10.1.1.1, 00:15:21, Ethernet0/0
> >
> >
> >
> > On R3
> >
> >
> >
> > R3#Show ip route eigrp
> >
> >
> >
> > D 2.0.0.0/8 [90/409600] via 10.1.1.1, 00:15:06, Ethernet0/0
> >
> > D 3.0.0.0/8 [90/409600] via 10.1.1.1, 00:15:06, Ethernet0/0
> >
> >
> >
> > Note R1 should not have any Eigrp routes in its routing table.
> >
> >
> >
> > Task 7
> >
> >
> >
> > Configure R1 to advertise Network 2.0.0.0 /8 and Network 3.0.0.0 /8 as
> > candidate default in this routing domain.
> >
> >
> >
> >
> >
> > On R1
> >
> >
> >
> > R1(config)#ip default-network 2.0.0.0
> >
> > R1(config)#ip default-network 3.0.0.0
> >
> >
> >
> > To verify the configuration:
> >
> >
> >
> > On R2
> >
> >
> >
> > R2#Show ip route eigrp
> >
> >
> >
> > D* 2.0.0.0/8 [90/409600] via 10.1.1.1, 00:02:55, Ethernet0/0
> >
> > D* 3.0.0.0/8 [90/409600] via 10.1.1.1, 00:02:52, Ethernet0/0
> >
> >
> >
> > On R3
> >
> >
> >
> > R3#Show ip route eigrp
> >
> >
> >
> > D* 2.0.0.0/8 [90/409600] via 10.1.1.1, 00:03:56, Ethernet0/0
> >
> > D* 3.0.0.0/8 [90/409600] via 10.1.1.1, 00:03:52, Ethernet0/0
> >
> >
> >
> > Note both R2 and R3 use networks 2.0.0.0 /8 and 3.0.0.0 /8 as their
> > candidate default.
> >
> >
> >
> > Task 8
> >
> >
> >
> > Configure R2 and R3 such that R2 uses network 2.0.0.0 /8 and R3 uses
> > network 3.0.0.0 /8 as their candidate default.
> >
> >
> >
> >
> >
> > On R2
> >
> >
> >
> > To configure this task, an access-list is written to identify the network
> > (Network 2.0.0.0 /8 in this case), then, the access-list is referenced
> in
> > the "Default-information allowed in" command, which tells the router that
> > ONLY the network that is permitted in the access-list should be used as
> > candidate default.
> >
> >
> >
> > R2(config)#access-list 2 permit 2.0.0.0
> >
> >
> >
> > R2(config)#router eigrp 100
> >
> > R2(config-router)#default-information allowed in 2
> >
> >
> >
> > R2#cle ip eigrp neigh
> >
> >
> >
> > R2#Show ip route eigrp
> >
> >
> >
> > D* 2.0.0.0/8 [90/409600] via 10.1.1.1, 00:01:41, FastEthernet0/0
> >
> > D 3.0.0.0/8 [90/409600] via 10.1.1.1, 00:01:41, FastEthernet0/0
> >
> >
> >
> > The following shows the configuration of R3:
> >
> >
> >
> > On R3
> >
> >
> >
> > R3(config)#access-list 3 permit 3.0.0.0
> >
> >
> >
> > R3(config)#Router eigrp 100
> >
> > R3(config-router)#default-information allowed in 3
> >
> >
> >
> > R3#cle ip eigrp neighbor
> >
> >
> >
> >
> >
> > To verify the configuration:
> >
> >
> >
> > On R3
> >
> >
> >
> > R3#Show ip route eigrp
> >
> >
> >
> > D 2.0.0.0/8 [90/409600] via 10.1.1.1, 00:01:01, Ethernet0/0
> >
> > D* 3.0.0.0/8 [90/409600] via 10.1.1.1, 00:01:01, Ethernet0/0
> >
> >
> >
> > To test the configuration:
> >
> >
> >
> > On R2
> >
> >
> >
> > R2#Ping 4.4.4.4
> >
> >
> >
> > Type escape sequence to abort.
> >
> > Sending 5, 100-byte ICMP Echos to 4.4.4.4, timeout is 2 seconds:
> >
> > !!!!!
> >
> > Success rate is 100 percent (5/5), round-trip min/avg/max = 4/11/24 ms
> >
> >
> >
> > On R3
> >
> >
> >
> > R3#Ping 4.4.4.4
> >
> >
> >
> > Type escape sequence to abort.
> >
> > Sending 5, 100-byte ICMP Echos to 4.4.4.4, timeout is 2 seconds:
> >
> > !!!!!
> >
> > Success rate is 100 percent (5/5), round-trip min/avg/max = 4/13/24 ms
> > * Once again i am sorry for the long post, but i hope this helped.
> >
> > On Mon, Nov 24, 2008 at 4:26 PM, Hobbs <deadheadblues@gmail.com> wrote:
> >
> >> Yep, I had the router generated via RIP, then redistributed into EIGRP
> >>
> >> R6-----[EIGRP]-----R7------[RIP]-------R8 <---- generates default
> >>
> >> R7#show ip route | inc 0.0.0.0
> >> Gateway of last resort is 150.100.78.8 to network 0.0.0.0
> >> 20.0.0.0/24 is subnetted, 1 subnets
> >> R* 0.0.0.0/0 [120/1] via 150.100.78.8, 00:00:09, Serial1/0
> >> R7#
> >>
> >>
> >>
> >> On 11/24/08, Jason Madsen <madsen.jason@gmail.com> wrote:
> >> >
> >> > were you testing with a default route originating in the same EIGRP AS
> >> or
> >> > was it from another AS or another routing protocol? try your test
> again
> >> > with the default route originated in say...rip, and then redistribute
> >> into
> >> > your EIGRP AS and see if what you get.
> >> >
> >> > Jason
> >> >
> >> > On Mon, Nov 24, 2008 at 4:11 PM, Hobbs <deadheadblues@gmail.com>
> wrote:
> >> >
> >> >> I know what it does for OSPF and the rest, but it appears it does
> >> >> something
> >> >> different (or nothing) for EIGRP
> >> >>
> >> >> R7(config)#router eigrp 1
> >> >>
> >> >> R7(config-router)#default-information ?
> >> >> allowed Allow default information
> >> >> in Accept default routing information
> >> >> out Output default routing information
> >> >>
> >> >> I tried using "no default-information out" but the default route was
> >> still
> >> >> sent out.
> >> >> I tried using "no default-information in" on another router but it
> >> still
> >> >> accepted the route.
> >> >>
> >> >> R6#show run | sec eigrp
> >> >> router eigrp 1
> >> >> network 150.100.0.0
> >> >> no default-information in
> >> >> no auto-summary
> >> >>
> >> >> R6#show ip route | inc Gate
> >> >> Gateway of last resort is 150.100.56.7 to network 0.0.0.0
> >> >>
> >> >> thanks,
> >> >>
> >> >>
> >> >> Blogs and organic groups at http://www.ccie.net
> >> >>
> >> >>
> _______________________________________________________________________
> >> >> Subscription information may be found at:
> >> >> http://www.groupstudy.com/list/CCIELab.html
> >>
> >>
> >> Blogs and organic groups at http://www.ccie.net
> >>
> >> _______________________________________________________________________
> >> Subscription information may be found at:
> >> http://www.groupstudy.com/list/CCIELab.html
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >
> >
> > --
> > Narbik Kocharians
> > CCSI#30832, CCIE# 12410 (R&S, SP, Security)
> > www.MicronicsTraining
> > www.Net-Workbooks.com <http://www.net-workbooks.com/> <
> http://www.net-workbooks.com/>
> > Sr. Technical Instructor
> >
>
>
>
> --
> Narbik Kocharians
> CCSI#30832, CCIE# 12410 (R&S, SP, Security)
> www.MicronicsTraining
> www.Net-Workbooks.com <http://www.net-workbooks.com/>
> Sr. Technical Instructor
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
Blogs and organic groups at http://www.ccie.net
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