topic Re: CBS350 routing issue in Switching

CBS350 routing issue

informatiqueVDL — Tue, 17 Sep 2024 06:53:05 GMT

Hi everyone,

I'm trying to set up a little lab with 2 CBS350.

I want to link those 2 CBS by connecting te2 with L3 (no switch port. IP 172.31.254.253/30 and 172.31.254.254/30)

On CBS-A I have VLAN 92 IP 172.16.14.1/24 and PC IP 172.16.14.10/24 (with GW IP VLAN92).

On CBS-B I have VLAN 93 IP 172.16.15.1/24 and PC IP 172.16.15.10/24 (with GW IP VLAN93)

IP Routing is on. Routes on CBS are:

172.16.14.0/24 via 172.31.254.254

172.16.15.0/24 via 172.31.254.253

From every PC I can ping their own GW, the IP of each te2, but can't ping each other or opposite VLAN IP.

Is it due to something I forgot to set up, or is it due to CBS limitations ?

Best regards.

Re: CBS350 routing issue

amikat — Tue, 17 Sep 2024 13:21:59 GMT

Hi,

Can you please share the configuration of one CBS350 box.

Thanks & Regards,

Antonin

Re: CBS350 routing issue

informatiqueVDL — Tue, 17 Sep 2024 13:59:18 GMT

Sure.

sh run
config-file-header
CBS350-CLSH-BL
v3.4.0.17 / RCBS3.4_950_377_325
CLI v1.0
file SSD indicator encrypted
@
ssd-control-start
ssd config
ssd file passphrase control unrestricted
no ssd file integrity control
ssd-control-end cb0...
!
!
unit-type-control-start
unit-type unit 1 network gi&tw-2 uplink te
unit-type-control-end
!
spanning-tree mode rapid-pvst
spanning-tree loopback-guard
vlan database
vlan 93,131,151
exit
voice vlan oui-table add 0001e3 Siemens_AG_phone
voice vlan oui-table add 00036b Cisco_phone
voice vlan oui-table add 00096e Avaya
voice vlan oui-table add 000fe2 H3C_Aolynk
voice vlan oui-table add 0060b9 Philips_and_NEC_AG_phone
voice vlan oui-table add 00d01e Pingtel_phone
voice vlan oui-table add 00e075 Polycom/Veritel_phone
voice vlan oui-table add 00e0bb 3Com_phone
bonjour interface range vlan 1
hostname CBS350-CLSH-BL
username a... privilege 15
!
interface vlan 93
ip address 172.16.15.1 255.255.255.0
!
interface vlan 131
ip address 10.14.103.1 255.255.255.0
!
interface vlan 151
ip address 192.164.100.1 255.255.255.0
!
interface GigabitEthernet1
spanning-tree portfast
switchport access vlan 151
!
interface GigabitEthernet2
spanning-tree portfast
switchport access vlan 151
!
interface GigabitEthernet3
spanning-tree portfast
switchport access vlan 151
!
interface GigabitEthernet4
spanning-tree portfast
switchport access vlan 93
!
interface GigabitEthernet5
spanning-tree portfast
switchport access vlan 93
!
interface GigabitEthernet6
spanning-tree portfast
switchport access vlan 131
!
interface TenGigabitEthernet2
ip address 172.31.254.254 255.255.255.252
no switchport
!
exit
ip route 10.13.0.0 /16 172.31.254.253
ip route 172.16.14.0 /24 172.31.254.253
ip route 192.163.0.0 /16 172.31.254.253

On the other switch I have VLAN 92, 130 and 150, IP corresponding to the routes.

Re: CBS350 routing issue

Richard Burts — Tue, 17 Sep 2024 14:50:41 GMT

Is this what you really intended

ip route 192.163.0.0 /16 172.31.254.253

or did you perhaps intend

ip route 192.168.0.0 /16 172.31.254.253

Re: CBS350 routing issue

amikat — Tue, 17 Sep 2024 14:51:32 GMT

Hi,

Thanks for the information supplied. I understand that you are able to ping from PC this side to 172.31.254.253 and not to int Vlan92, 130, 150 IP addresses. If so can you ping from this CBS box to the Int Vlan opposite addresses?

Best regards,

Antonin

Re: CBS350 routing issue

amikat — Tue, 17 Sep 2024 15:09:02 GMT

Hi,

Further to my previous reply I would like to suggest that your static routes configuration should perhaps read as:

ip route 10.13.103.0 /24 172.31.254.253

ip route 192.163.100.0 /24 172.31.254.253

Best regards,

Antonin

Re: CBS350 routing issue

Deepak Kumar — Tue, 17 Sep 2024 15:24:02 GMT

Hello,

Everything seems ok but I can't see you had enabled "IP routing" command on the switch. By default, it is in Layer 2 mode.

Regards,

Deepak Kumar

Re: CBS350 routing issue

informatiqueVDL — Fri, 20 Sep 2024 08:59:34 GMT

Hi Richard.

No it's 192.163.0.0 because my vlan150 ip is 192.163.150.1

Re: CBS350 routing issue

informatiqueVDL — Fri, 20 Sep 2024 09:17:44 GMT

Hi Deepak Kumar,

Yes it's active. It only shows in the sh run when it's not.

Re: CBS350 routing issue

informatiqueVDL — Fri, 20 Sep 2024 09:19:46 GMT

Thanks for your answers.

I just realized that the ping only works when a device is connected on a gi port.

Ping on vlan's IP is not working if there is no device on the vlan !

So it seems it's working, I can ping devices and vlan'IP from both CBS.

Thank you for the help !

Re: CBS350 routing issue

Richard Burts — Fri, 20 Sep 2024 15:57:31 GMT

Thanks for the update. Glad that you figured out the issue.