From: san (san.study@gmail.com)
Date: Fri Apr 07 2006 - 02:38:33 GMT-3
Victor,
I am just trying fight agains FR with OSPF on all different scenarios.
This was the config when i noticed this problem. Later i found that it is
happening in most of the standard configs also. (ie. Traffic is redirected
for the first packet at hub for spoke to spoke traffic).
If possible can you try enable debug ip icmp on hub & reload spokes only &
then try ping spoke to spoke.
By saying standard config....i am referring to same topology...all physical
interfaces, ospf network type broadcast, Hub as DR. (IE lab 1 topology
example ).
On 4/6/06, Victor Cappuccio <cvictor@protokolgroup.com> wrote:
>
> Hello San
>
> *Mar 8 22:02:05.146: ICMP: redirect sent to 183.1.0.4 for dest 183.1.0.3,
> use gw 183.1.0.3
>
> This message indicates that R5 is in the same subnet than R3 / R4
> So hi is telling Router 4 to send traffic directly to R3
>
> Double check your serial 0/0 on R3, I think that you should make the
> priority also to 0, because if router3 gets elected as the DR you will
> have a problem there
>
> Why you are using a non-broadcast ospf network type on R5 interface to
> the hubs, and then have a broadcast parameter in the frame-relay L3-L2
> mapping?
>
> HTH
> Victor
>
> san escribis:
> > Hi ,
> >
> > I have a question on "why does spoke to spoke traffic is redirected by
> HUB
> > ?" or Why does spoke to spoke traffic is going to Hubs ip address ?
> >
> > Topology:
> > -------------
> > R3(spoke)---------R5(hub)-----------R4(spoke)
> >
> > problem:
> > ------------
> > When i ping from R4 183.1.0.4 to R3 183.1.0.3.....I see the below
> message
> > at R5. But sh ip route on R4 shows nexthop as 183.1.0.3...then why
> does
> > packet go to 183.1.0.5 ?
> >
> >
> > Rack1R5#
> > *Mar 8 22:02:05.146: ICMP: redirect sent to 183.1.0.4 for dest
> 183.1.0.3,
> > use gw 183.1.0.3
> >
> >
> > Configs:
> > -----------
> > Rack1R4#sir
> > 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
> >
> > 183.1.0.0/24 is subnetted, 3 subnets
> > C 183.1.46.0 is directly connected, FastEthernet0/1
> > C 183.1.45.0 is directly connected, FastEthernet0/0
> > C 183.1.0.0 is directly connected, Serial0/0
> > 150.1.0.0/16 is variably subnetted, 3 subnets, 2 masks
> > C 150.1.4.0/24 is directly connected, Loopback0
> > O 150.1.5.5/32 [110/65] via 183.1.0.5, 00:03:00, Serial0/0
> > O 150.1.3.3/32 [110/65] via 183.1.0.3, 00:03:00, Serial0/0
> > Rack1R4#
> > Rack1R4#
> > Rack1R4#si serial 0/0
> > Building configuration...
> >
> > Current configuration : 274 bytes
> > !
> > interface Serial0/0
> > ip address 183.1.0.4 255.255.255.0
> > encapsulation frame-relay
> > ip ospf network broadcast
> > ip ospf priority 0
> > no dce-terminal-timing-enable
> > frame-relay map ip 183.1.0.3 405
> > frame-relay map ip 183.1.0.5 405 broadcast
> > no frame-relay inverse-arp
> > end
> >
> > Rack1R4#br ospf
> > router ospf 1
> > router-id 150.1.4.4
> > log-adjacency-changes
> > network 150.1.4.4 0.0.0.0 area 0
> > network 183.1.0.4 0.0.0.0 area 0
> > !
> > !
> >
> > Rack1R5#
> > *Mar 8 22:02:05.146: ICMP: redirect sent to 183.1.0.4 for dest
> 183.1.0.3,
> > use gw 183.1.0.3
> >
> >
> >
> >
> >
> >
> > Rack1R5#sir
> > 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
> >
> > 183.1.0.0/24 is subnetted, 3 subnets
> > C 183.1.58.0 is directly connected, FastEthernet0/0
> > C 183.1.45.0 is directly connected, FastEthernet0/1
> > C 183.1.0.0 is directly connected, Serial0/0
> > 150.1.0.0/16 is variably subnetted, 3 subnets, 2 masks
> > C 150.1.5.0/24 is directly connected, Loopback0
> > O 150.1.4.4/32 [110/65] via 183.1.0.4, 00:04:22, Serial0/0
> > O 150.1.3.3/32 [110/65] via 183.1.0.3, 00:04:22, Serial0/0
> > Rack1R5#
> > Rack1R5#si serial 0/0
> > Building configuration...
> >
> > Current configuration : 295 bytes
> > !
> > interface Serial0/0
> > ip address 183.1.0.5 255.255.255.0
> > encapsulation frame-relay
> > ip ospf network non-broadcast
> > ip ospf hello-interval 10
> > no dce-terminal-timing-enable
> > frame-relay map ip 183.1.0.3 513 broadcast
> > frame-relay map ip 183.1.0.4 504 broadcast
> > no frame-relay inverse-arp
> > end
> >
> > Rack1R5#br ospf
> > router ospf 1
> > router-id 150.1.5.5
> > log-adjacency-changes
> > network 150.1.5.5 0.0.0.0 area 0
> > network 183.1.0.5 0.0.0.0 area 0
> > neighbor 183.1.0.3
> > neighbor 183.1.0.4
> > !
> >
> >
> >
> > R3:
> > ===
> > Rack1R3#sir
> > 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
> >
> > C 204.12.1.0/24 is directly connected, FastEthernet0/0
> > 183.1.0.0/24 is subnetted, 2 subnets
> > C 183.1.0.0 is directly connected, Serial1/1.100
> > C 183.1.123.0 is directly connected, Serial1/0
> > 150.1.0.0/16 is variably subnetted, 3 subnets, 2 masks
> > C 150.1.3.0/24 is directly connected, Loopback0
> > O 150.1.5.5/32 [110/782] via 183.1.0.5, 00:00:09, Serial1/1.100
> > O 150.1.4.4/32 [110/782] via 183.1.0.4, 00:00:09, Serial1/1.100
> > Rack1R3#
> > Rack1R3#
> > Rack1R3#
> > Rack1R3#
> > Rack1R3#
> > Rack1R3#
> > Rack1R3#
> > Rack1R3#
> > Rack1R3#
> > Rack1R3#
> > Rack1R3#si serial 1/1.100
> > Building configuration...
> >
> > Current configuration : 144 bytes
> > !
> > interface Serial1/1.100 point-to-point
> > ip address 183.1.0.3 255.255.255.0
> > ip ospf network broadcast
> > frame-relay interface-dlci 315
> > end
> >
> > Rack1R3#br ospf
> > router ospf 1
> > router-id 150.1.3.3
> > log-adjacency-changes
> > network 150.1.3.3 0.0.0.0 area 0
> > network 183.1.0.3 0.0.0.0 area 0
> > !
> > !
> >
> >
> > --
> > Thanks & Rgds
> > SAN
> >
> > _______________________________________________________________________
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
> >
> >
>
-- Thanks & Rgds SAN
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