Go CCIE Go!! - A Cisco Certified Internetwork Expert

Hi Experts,
If we don’t have any limitation on R1-LAB as per the task, on which interface you can run eigrp,
I believe that we can include network 0.0.0.0 followed with redistribute static in router configuration, this way default route will be advertised as internal and you can set AD whatever you want with distance command.
Just another thought…

—–Original Message—– From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Sean Gavitt Sent: Monday, March 24, 2008 1:28 PM To: Victor Cappuccio; Ina&Laurean Cc: Ed Lui; Timothy Chin; Cisco certification Subject: Re: distance command EIGRP
Do offset list on upstream router (R1):
router eigrp 1 offset-list 1 out 2147483647
access-list 1 permit 0.0.0.0 0.0.0.0
This will make that route unreachable on R2

————————————————– From: “Victor Cappuccio” Sent: Monday, March 24, 2008 3:59 PM To: “Ina&Laurean” Cc: “Ed Lui” ; “Timothy Chin” ; “Cisco certification” Subject: Re: distance command EIGRP
> Because the route is external “D*EX 0.0.0.0/0 [170/2565120] via > 192.168.254.1, 00:00:45, Vlan1″ > http://www.groupstudy.com/archives/ccielab/200307/msg01356.html > > > > On Mon, Mar 24, 2008 at 8:35 PM, Ina&Laurean > wrote: > >> Hi Guys, >> >> >> the command distance eigrp 90 255 would actually filter all EIGRP >> external >> routes which will break the full connectivity. >> >> The task solution is using the “distance 255 192.168.254.1 0.0.0.0 1″ >> command but in my test lab doesn’t work so I though I am missing >> something. >> >> >> >> Thanks, >> >> Laurean >> >> >> >> >> >> >> On Mon, Mar 24, 2008 at 3:03 PM, Victor Cappuccio >> wrote: >> >> > That works for candidate routes in the routing table, subnets flagged >> > as a candidate default route on the hub router by virtue of the “ip >> > default-network” command. >> > >> > R1(config-router)#do show ip route >> > Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP >> > D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area >> > N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 >> > E1 - OSPF external type 1, E2 - OSPF external type 2 >> > i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS >> > level-2 >> > ia - IS-IS inter area, * - candidate default, U - per-user >> > static >> > route >> > o - ODR, P - periodic downloaded static route >> > >> > Gateway of last resort is not set >> > >> > 1.0.0.0/24 is subnetted, 1 subnets >> > C 1.1.13.0 is directly connected, Serial1/1 >> > S 172.16.0.0/16 is directly connected, Null0 >> > C* 192.168.1.0/24 is directly connected, Loopback0 >> > >> > R3(config-router)# >> > *Mar 24 20:01:34.091: RT: default path is now 192.168.1.0 via 1.1.13.1 >> > *Mar 24 20:01:34.091: RT: new default network 192.168.1.0 >> > *Mar 24 20:01:34.091: RT: NET-RED 192.168.1.0/24 >> > do show ip route # >> > Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP >> > D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area >> > N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 >> > E1 - OSPF external type 1, E2 - OSPF external type 2 >> > i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS >> > level-2 >> > ia - IS-IS inter area, * - candidate default, U - per-user >> > static >> > route >> > o - ODR, P - periodic downloaded static route >> > >> > Gateway of last resort is 1.1.13.1 to network 192.168.1.0 >> > >> > 1.0.0.0/24 is subnetted, 1 subnets >> > C 1.1.13.0 is directly connected, Serial1/2 >> > D* 192.168.1.0/24 [90/2297856] via 1.1.13.1, 00:00:13, Serial1/2 >> > R3(config-router)# >> > R3(config-router)#router eigrp 100 >> > R3(config-router)#no default-inf in >> > R3(config-router)#do clear ip eigrp neigh >> > R3(config-router)# >> > *Mar 24 20:02:05.595: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor >> > 1.1.13.1 (Ser >> > ial1/2) is down: manually cleared >> > R3(config-router)# >> > *Mar 24 20:02:05.599: RT: delete route to 192.168.1.0 via 1.1.13.1, >> > eigrp metric >> > [90/2297856] >> > *Mar 24 20:02:05.599: RT: SET_LAST_RDB for 192.168.1.0/24 >> > OLD rdb: via 1.1.13.1, Serial1/2 >> > >> > *Mar 24 20:02:05.603: RT: no routes to 192.168.1.0 >> > *Mar 24 20:02:05.603: RT: NET-RED 192.168.1.0/24 >> > *Mar 24 20:02:05.603: RT: NET-RED 192.168.1.0/24 >> > *Mar 24 20:02:05.607: RT: delete network route to 192.168.1.0 >> > *Mar 24 20:02:05.607: RT: NET-RED 192.168.1.0/24 >> > R3(config-router)# >> > *Mar 24 20:02:07.807: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor >> > 1.1.13.1 (Ser >> > ial1/2) is up: new adjacency >> > R3(config-router)#do >> > *Mar 24 20:02:08.047: RT: SET_LAST_RDB for 192.168.1.0/24 >> > NEW rdb: via 1.1.13.1 >> > >> > *Mar 24 20:02:08.047: RT: add 192.168.1.0/24 via 1.1.13.1, eigrp metric >> > [90/2297 >> > 856] >> > *Mar 24 20:02:08.051: RT: NET-RED 192.168.1.0/24 >> > R3(config-router)#do show ip route >> > Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP >> > D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area >> > N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 >> > E1 - OSPF external type 1, E2 - OSPF external type 2 >> > i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS >> > level-2 >> > ia - IS-IS inter area, * - candidate default, U - per-user >> > static >> > route >> > o - ODR, P - periodic downloaded static route >> > >> > Gateway of last resort is not set >> > >> > 1.0.0.0/24 is subnetted, 1 subnets >> > C 1.1.13.0 is directly connected, Serial1/2 >> > D 192.168.1.0/24 [90/2297856] via 1.1.13.1, 00:00:04, Serial1/2 >> > R3(config-router)# >> > >> > Try distance 90 255 >> > like TIm Said >> > >> > Thanks >> > Victor.- >> > >> > >> > On Mon, Mar 24, 2008 at 7:43 PM, Ed Lui wrote: >> > >> > > Try…….. >> > > >> > > Under router eigrp xxx >> > > no default-information in >> > > >> > > >> > > On Mon, Mar 24, 2008 at 11:27 AM, Timothy Chin >> > > wrote: >> > > > Try >> > > > >> > > > distance eigrp 90 255 >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > —–Original Message—– >> > > > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On >> > > Behalf Of >> > > > Ina&Laurean >> > > > Sent: Monday, March 24, 2008 2:20 PM >> > > > To: Victor Cappuccio >> > > > Cc: Cisco certification >> > > > Subject: Re: distance command EIGRP >> > > > >> > > > Hi Victor, >> > > > Yes a do have a default route on R1 this is the way that I >> > > > injected >> > > the >> > > > default route into the EIGRP domain. >> > > > This route is actualy injected there as by DHCP client running on >> > > one of >> > > > the >> > > > R1 interfaces. >> > > > But just to make things clear where I want to filter the route is >> > > on R2. >> > > > >> > > > On more note I am not allowed to use the distribute-list command. >> > > > >> > > > As an alternate solution I tried to use >> > > > default-information allowed in under the router eigrp, but I >> > > couldn’t >> > > > make >> > > > this one work either. >> > > > >> > > > As per description on the command references it should work but I >> > > wasn’t >> > > > able to filter the default route this way. >> > > > >> > > > >> > > > Thanks, >> > > > Laurean >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > On Mon, Mar 24, 2008 at 1:55 PM, Victor Cappuccio > > > vcappuccio@gmail.com> >> > > > wrote: >> > > > >> > > > > Ina&Laurean, >> > > > > >> > > > > can you show us the output of the show run | in ip route >> > > > > It seems to me that you have something like “ip route 0.0.0.0 >> > > 0.0.0.0 >> > > > > 10.1.9.254 254″ in your R1 configuration >> > > > > >> > > > > Can you please check this out >> > > > > >> > > > > Thanks, >> > > > > Victor Cappuccio >> > > > > www.vcappuccio.wordpress.com >> > > > > >> > > > > ——— >> > > > > >> > > > > R1(config-router)#do show ip route 0.0.0.0 >> > > > > Routing entry for 0.0.0.0/0, supernet >> > > > > Known via “eigrp 100″, distance 170, metric 2169856, candidate >> > > > default >> > > > > path, type external >> > > > > Redistributing via eigrp 100 >> > > > > Last update from 1.1.13.3 on Serial1/1, 00:00:04 ago >> > > > > Routing Descriptor Blocks: >> > > > > * 1.1.13.3, from 1.1.13.3, 00:00:04 ago, via Serial1/1 >> > > > > Route metric is 2169856, traffic share count is 1 >> > > > > Total delay is 20000 microseconds, minimum bandwidth is >> > > 1544 >> > > > Kbit >> > > > > Reliability 255/255, minimum MTU 1500 bytes >> > > > > Loading 1/255, Hops 1 >> > > > > >> > > > > R1(config-router)#do show ip route eigrp >> > > > > 3.0.0.0/32 is subnetted, 1 subnets >> > > > > D 3.3.3.3 [90/2297856] via 1.1.13.3, 00:00:04, Serial1/1 >> > > > > D*EX 0.0.0.0/0 [170/2169856] via 1.1.13.3, 00:01:28, Serial1/1 >> > > > > >> > > > > >> > > > > R1(config-router)#do show ip route eigrp >> > > > > 3.0.0.0/32 is subnetted, 1 subnets >> > > > > D 3.3.3.3 [90/2297856] via 1.1.13.3, 00:00:04, Serial1/1 >> > > > > D*EX 0.0.0.0/0 [170/2169856] via 1.1.13.3, 00:01:28, Serial1/1 >> > > > > R1(config-router)#exit >> > > > > R1(config)#ip prefix-list X deny 0.0.0.0/0 >> > > > > R1(config)#ip prefix-list X permit 0.0.0.0/0 le 32 >> > > > > R1(config)#router eigrp 100 >> > > > > R1(config-router)#distribute-list prefix X in S1/1 >> > > > > R1(config-router)#do clear ip eigrp neigh >> > > > > R1(config-router)# >> > > > > *Mar 24 18:52:59.555: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: >> > > Neighbor >> > > > > 1.1.13.3 (Ser >> > > > > ial1/1) is down: manually cleared >> > > > > R1(config-router)# >> > > > > *Mar 24 18:53:00.587: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: >> > > Neighbor >> > > > > 1.1.13.3 (Ser >> > > > > ial1/1) is up: new adjacency >> > > > > R1(config-router)#do show ip route >> > > > > *Mar 24 18:53:02.271: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: >> > > Neighbor >> > > > > 1.1.13.3 (Ser >> > > > > ial1/1) is resync: route configuration changed >> > > > > R1(config-router)#do show ip route eigrp >> > > > > 3.0.0.0/32 is subnetted, 1 subnets >> > > > > D 3.3.3.3 [90/2297856] via 1.1.13.3, 00:00:04, Serial1/1 >> > > > > R1(config-router)# >> > > > > >> > > > > >> > > > > >> > > > > On Mon, Mar 24, 2008 at 6:25 PM, Ina&Laurean > > > ina.laurean@gmail.com> >> > > > > wrote: >> > > > > >> > > > > > Hi Group, >> > > > > > >> > > > > > I am working on a lab and one of the requirements is to filter >> > > a >> > > > default >> > > > > > route coming from a specific EIGRP neighbor, I tried different >> > > > solutions >> > > > > > but >> > > > > > none of them work seem to work, the solution is using the >> > > distance >> > > > > > command >> > > > > > with neighbor EIGRP address and an access list. >> > > > > > >> > > > > > I’ve created a Lab with just two routers to test this and as >> > > you can >> > > > see >> > > > > > the >> > > > > > default route is still into the routing table even though >> > > > under >> > > the >> > > > ip >> > > > > > protocols shows that the distance is 255. >> > > > > > >> > > > > > >> > > > > > >> > > > > > Thanks, >> > > > > > >> > > > > > Laurean >> > > > > > >> > > > > > >> > > > > > >> > > > > > Bellow my configurations: >> > > > > > >> > > > > > >> > > > > > >> > > > > > R1-LAB#sh run | s eigrp >> > > > > > >> > > > > > router eigrp 236 >> > > > > > >> > > > > > redistribute static metric 1000 10 255 1 1500 >> > > > > > >> > > > > > network 192.168.253.0 >> > > > > > >> > > > > > network 192.168.254.0 >> > > > > > >> > > > > > no auto-summary >> > > > > > >> > > > > > deny eigrp any any >> > > > > > >> > > > > > R1-LAB# >> > > > > > >> > > > > > >> > > > > > >> > > > > > R1-LAB#sh ip route >> > > > > > >> > > > > > Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP >> > > > > > >> > > > > > D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF >> > > > inter >> > > area >> > > > > > >> > > > > > N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external >> > > type 2 >> > > > > > >> > > > > > E1 - OSPF external type 1, E2 - OSPF external type 2 >> > > > > > >> > > > > > i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - >> > > IS-IS >> > > > > > level-2 >> > > > > > >> > > > > > ia - IS-IS inter area, * - candidate default, U - >> > > per-user >> > > > static >> > > > > > route >> > > > > > >> > > > > > o - ODR, P - periodic downloaded static route >> > > > > > >> > > > > > >> > > > > > >> > > > > > Gateway of last resort is 10.1.9.254 to network 0.0.0.0 >> > > > > > >> > > > > > 10.0.0.0/8 is variably subnetted, 2 subnets, 2 masks >> > > > > > >> > > > > > C 10.1.9.0/24 is directly connected, GigabitEthernet0/0 >> > > > > > >> > > > > > S 10.1.6.5/32 [254/0] via 10.1.9.254, GigabitEthernet0/0 >> > > > > > >> > > > > > C 192.168.254.0/24 is directly connected, Vlan1 >> > > > > > >> > > > > > C 192.168.253.0/24 is directly connected, Loopback0 >> > > > > > >> > > > > > D 192.168.252.0/24 [90/156160] via 192.168.254.2, 00:11:18, >> > > Vlan1 >> > > > > > >> > > > > > S* 0.0.0.0/0 [254/0] via 10.1.9.254 >> > > > > > >> > > > > > R1-LAB# >> > > > > > >> > > > > > >> > > > > > >> > > > > > R2-LAB#sh run | s eigrp >> > > > > > >> > > > > > router eigrp 236 >> > > > > > >> > > > > > network 192.168.252.0 >> > > > > > >> > > > > > network 192.168.254.0 >> > > > > > >> > > > > > distance 255 192.168.254.1 0.0.0.0 1 >> > > > > > >> > > > > > no auto-summary >> > > > > > >> > > > > > >> > > > > > >> > > > > > R2-LAB#sh run | s access- >> > > > > > >> > > > > > access-list 1 permit 0.0.0.0 >> > > > > > >> > > > > > >> > > > > > >> > > > > > R2-LAB#sh ip route >> > > > > > >> > > > > > Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP >> > > > > > >> > > > > > D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF >> > > > inter >> > > area >> > > > > > >> > > > > > N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external >> > > type 2 >> > > > > > >> > > > > > E1 - OSPF external type 1, E2 - OSPF external type 2 >> > > > > > >> > > > > > i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - >> > > IS-IS >> > > > > > level-2 >> > > > > > >> > > > > > ia - IS-IS inter area, * - candidate default, U - >> > > per-user >> > > > static >> > > > > > route >> > > > > > >> > > > > > o - ODR, P - periodic downloaded static route >> > > > > > >> > > > > > >> > > > > > >> > > > > > Gateway of last resort is 192.168.254.1 to network 0.0.0.0 >> > > > > > >> > > > > > >> > > > > > >> > > > > > 10.0.0.0/32 is subnetted, 1 subnets >> > > > > > >> > > > > > D EX 10.1.6.5 [170/2565120] via 192.168.254.1, 00:00:45, >> > > Vlan1 >> > > > > > >> > > > > > C 192.168.254.0/24 is directly connected, Vlan1 >> > > > > > >> > > > > > D 192.168.253.0/24 [90/156160] via 192.168.254.1, 00:00:45, >> > > Vlan1 >> > > > > > >> > > > > > C 192.168.252.0/24 is directly connected, Loopback0 >> > > > > > >> > > > > > D*EX 0.0.0.0/0 [170/2565120] via 192.168.254.1, 00:00:45, >> > > > Vlan1 >> > > > > > >> > > > > > R2-LAB# >> > > > > > >> > > > > > >> > > > > > >> > > > > > R2-LAB#sh ip protocols >> > > > > > >> > > > > > Routing Protocol is “eigrp 236″ >> > > > > > >> > > > > > Outgoing update filter list for all interfaces is not set >> > > > > > >> > > > > > Incoming update filter list for all interfaces is not set >> > > > > > >> > > > > > Default networks flagged in outgoing updates >> > > > > > >> > > > > > Default networks accepted from incoming updates >> > > > > > >> > > > > > EIGRP metric weight K1=1, K2=0, K3=1, K4=0, K5=0 >> > > > > > >> > > > > > EIGRP maximum hopcount 100 >> > > > > > >> > > > > > EIGRP maximum metric variance 1 >> > > > > > >> > > > > > Redistributing: eigrp 236 >> > > > > > >> > > > > > EIGRP NSF-aware route hold timer is 240s >> > > > > > >> > > > > > Automatic network summarization is not in effect >> > > > > > >> > > > > > Maximum path: 4 >> > > > > > >> > > > > > Routing for Networks: >> > > > > > >> > > > > > 192.168.252.0 >> > > > > > >> > > > > > 192.168.254.0 >> > > > > > >> > > > > > Routing Information Sources: >> > > > > > >> > > > > > Gateway Distance Last Update >> > > > > > >> > > > > > 192.168.254.1 255 00:01:03 >> > > > > > >> > > > > > Distance: internal 90 external 170 >> > > > > > >> > > > > > Address Wild mask Distance List >> > > > > > >> > > > > > 192.168.254.1 0.0.0.0 255 1 >> > > > > > >> > > > > > >> > > > > > >> > > > > > R2-LAB# >> > > > > > >> > > > > > >> > > > >> > > >> > >