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Very Strange problem

loyalty
Level 1
Level 1

Host 10.10.6.11on my Network can get to the eth interface on my Router 10.10.101.11 but not the Serial interface 192.23.101.18 hence they can't connect to services on a remote Network, a trace end at 10.10.101.11 .I can ping 10.10.6.11 sourcing the packets from the eth int but not the serial and there are no restrictions on my Router. I have a default route configred that allows connectivity between the 10.10 subnets. I would appreciate any help.

5 Replies 5

lwantland
Level 1
Level 1

Can you please post the router config? More info is needed to start diagnosing the issue.

Regards,

Lance Wantland

loyalty
Level 1
Level 1

ip subnet-zero

ip nat inside source static 10.10.6.11 159.175.5.25

clock timezone est -5

!

interface Ethernet0

ip address 10.10.101.11 255.255.255.0

ip nat inside

no ip mroute-cache

!

interface Serial0

no ip address

encapsulation frame-relay

no ip mroute-cache

frame-relay lmi-type ansi

!

interface Serial0.41 point-to-point

ip address 192.23.101.18 255.255.255.252

ip nat outside

no ip mroute-cache

no arp frame-relay

frame-relay interface-dlci 41 IETF

!

interface Serial1

no ip address

no ip mroute-cache

shutdown

!

interface TokenRing0

no ip address

no ip mroute-cache

shutdown

!

router bgp 65312

network 159.175.5.0 mask 255.255.255.0

neighbor 192.23.101.17 remote-as 15282

no auto-summary

!

ip classless

ip route 0.0.0.0 0.0.0.0 10.10.101.2

ip route 159.175.5.0 255.255.255.0 Null0

HI,

Do you have a default route configured on the router from which you are pinging ( I assume it tobe 10.10.101.2, in your case) or atleast any route to get to the 192.23.101.16 network.

Sankar Nair
UC Solutions Architect
Pacific Northwest | CDW
CCIE Collaboration #17135 Emeritus

lwantland
Level 1
Level 1

Your Ethernet IP address is on the 10.10.101 network, and the node your working with is on the 10.10.6 network. I don’t see a route anywhere in the router that tells it how to get back to 10.10.6 subnet. Add a static route pointing the 10.10.6 network out interface E0 and see what that does for ya.

Regards,

Lance Wantland

After taking a second look, I also noticed that the inside global NAT address is being null routed. Any packet being send back to this host will be dropped in the bit bucket.

Regards,

Lance Wantland