From: Hobbs (deadheadblues@gmail.com)
Date: Tue Nov 25 2008 - 14:20:17 ARST
Thank you Narbik
On Tue, Nov 25, 2008 at 2:15 AM, GAURAV MADAN <gauravmadan1177@gmail.com>wrote:
> 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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