RIP-Problem with netid 192.168.0.x

[MicahNguyen]

Hi All,

My network:

Server1 192.168.168.5: HP Storage
Server2 192.168.168.6: HP Storage
Client 192.168.0.20: PC
Client 192.168.1.20: PC
Client 192.168.168.2: PC

Configurations on Alcatel_Core swith:
vlan 168 name 3PAR_SAN_STORAGE_MGMT_VLAN
vlan 170 name CORE_SW_TO_VPN_ROUTER_1941
vlan 170 port default 1/1
vlan 170 port default 1/2
vlan 168 port default 1/9
vlan 168 port default 1/10
vlan 168 port default 1/11
vlan 168 port default 1/12
ip interface vlan-168 address 192.168.168.1 mask 255.255.255.248 vlan 168
ip interface vlan-170 address 192.168.170.1/24 vlan 170
ip load rip
ip rip status enable
ip rip interface vlan-168
ip rip interface vlan-170
ip rip interface vlan-168 status enable
ip rip interface vlan-170 status enable
ip route-map local-to-rip sequence-number 10 action permit
ip redist local into rip route-map local-to-rip status enable

PROBLEM:
-Ping from 192.168.1.20/23 to 192.168.168.5/192.168.168.6 is ok. But can not ping from 192.168.0.20/23 to 192.168.168.5 with ping to 192.168.168.6 is ok
- From 192.168.168.2 alway ping to 192.168.0.20 and contra.
- If I replace Sever1 by PC/Laptop and set same ip (192.168.168.5), everything works well.
- If I replace Alcatel 6450 switch by Cisco switch, everything works well. Cisco switch also configures rip and advertise network 192.168.168.0 and 192.168.170.0.
- I tried replace Alcatel 6450 by Alcatel 6250, the problems still happened.

This problem only happen in case: Alatel switch, HP storage server, network 192.168.0.x/23.
So have any solution to resolve this problems?

English is not my native language, please feel compassion for my explaintion.

[silvio]

check your learned routes:
show ip routes
show ip rip routes
check also the mask.

Did you speak rip v1 or v2 to?
Rip v1 did not tramsmit the mask. So it can the reason for issue with mask /23.

regards
Silvio

[MicahNguyen]

Hi Silvio

I'm using rip v2 as by default of Alcatel.
Cause from host 192.168.0.20 can ping to 192.168.168.6, so I think the rip routing protocol is working well.
May have any relation with auto summary route?

[MicahNguyen]

Hi All,

I already checked the routing table in alcatel core switch as below:

Has routing to 192.168.0.0/23 also, but can not ping

using Cisco or Alcatel, I still got packets with same information as below:
Cisco SW



Alcatel SW




So do you have any idea about this issue?

[silvio]

very strange....
You should open a ticket at Alcatel to find the reason. routes seems to be ok.

I think you have also checked with traceroute, the routes at your servers (and default gateways, mask, other network interfaces) and of course firewall at server/laptop etc.

regards
Silvio

[MicahNguyen]

Yep, very strange!

I used Wireshark for capturing packet, all in the same with Alcatel SW or Cisco SW. This mean have no reply packet, but PC showed that ping was OK when I use Cisco SW.

I'm checking with Alcatel for solutions. Hope they can find out soon.