04-09-2015 08:23 AM - edited 03-05-2019 01:12 AM
Hello,
I have two sites connected by point to point microwave wireless link. both sites have cisco 3900 router. Both site have separate internet and data switches. there is no VLANs. Simple network where internet and data connects on different switch. Site A have internet which Site B will also use. Below my configurations of both router.
SITE A
interface GigabitEthernet0/0
description link to LAN
ip address 192.168.254.150 255.255.255.0
duplex auto
speed auto
!
interface GigabitEthernet0/1
description link to SITE B
ip address 172.16.201.221 255.255.255.0
duplex auto
speed auto
!
interface GigabitEthernet0/2
description link to WAN
ip address 192.168.250.150 255.255.255.0
duplex auto
speed auto
!
ip forward-protocol nd
!
no ip http server
no ip http secure-server
!
ip route 0.0.0.0 0.0.0.0 192.168.250.1
ip route 192.168.244.0 255.255.255.0 172.16.201.220
ip route 192.168.251.0 255.255.255.0 172.16.201.220
SITE B
interface Embedded-Service-Engine0/0
no ip address
shutdown
!
interface GigabitEthernet0/0
description link to LAN
ip address 192.168.244.150 255.255.255.0
duplex auto
speed auto
!
interface GigabitEthernet0/1
description link to SITE A
ip address 172.16.201.220 255.255.255.0
duplex auto
speed auto
!
interface GigabitEthernet0/2
description link to Internet Switch
ip address 192.168.251.150 255.255.255.0
duplex auto
speed auto
!
ip forward-protocol nd
!
no ip http server
no ip http secure-server
!
ip route 0.0.0.0 0.0.0.0 172.16.201.221
Now here are my questions/ problems / reference..
1. Site A router gets internet properly and I can reach all web sites and ping shows reply, but from Site B I can reach all websites ( Resolves name to IP) but ping results show no reply.
2. Sitting on site A router I can ping all 3 ports of Site B router and inside devices (e.g Servers and Desktops).
3. Sitting on Site B router I can only reach Site A router port 0/0. No other port I can reach. And I cannot reach any devices inside as well. But here is the interesting part if I ping any computer of Site B sitting on Site A, then that computer of Site A I can reach from site B. Similarly if I need access of another computer of Site A from site B, I just have to ping from that Site A computer to any Site B computer and then I can reach the computer from site B.
4. All that still works if internet comes on site B, I can bear other problems. But I think root cause is that I cannot ping Site A router ports from site B, if that solves I guess all will resolve.
5. I tried RIP V2 also but same issue.
6. IP address of both side P2P radios are 172.16.201.22 and 26 ( just for reference)
I am totally tired and done router reset 2 times tried changing ip series several time but all in vain.. I will really appreciate if some one can help with some ideas.
Thanks & Regards,
Purnendu Mukherjee.
04-09-2015 12:49 PM
Can you add a diagram please? Can you post the "show IP route" output from both routers.
Which traffic are you routing across the WAN link? And which traffic over the internet link?
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