10-17-2007 05:23 AM - edited 03-05-2019 07:08 PM
Ok I dont know why I am drawing a blank here but for some reason i cant connect between these 2 svi's.
I have 2 layer 3 switches.
Switch 1:
int vlan 100
ip address 172.16.1.133/29
int g1/10
description "trunk to switch2"
switchport trunk encap dot1q
switchport mode trunk
switchport nonegotiate
Switch 2:
int vlan 100
ip address 172.16.1.141/29
int g1/12
description "trunk to switch1"
switchport trunk encap dot1q
switchport mode trunk
switchport nonegotiate
Ok so the trunk forms with no problem but I cannot ping the 172.16.1.133 from switch 2 and cannot ping 172.16.1.141 from switch 1.
I can ping 172.16.1.133 from switch 1, which it is configured on.
I can ping 172.16.1.141 from switch 2, which it is configured on.
What am I missing here?
10-17-2007 05:39 AM
These are different subnets.
172.16.1.133/29 is 172.16.1.[128 - 135]
172.16.1.141/29 is 172.16.1.[136 - 143]
Kevin Dorrell
Luxembourg
10-17-2007 05:44 AM
yes I know this. Anyway I can connect them via the vlan ? Should I remove the trunk?
10-17-2007 05:47 AM
You've configured the same Vlan on both switches (Vlan100) but you've assigned IPs that belong on different subnets.
It's like configuring 2 workstations with IP
172.26.1.10 in one device and 192.168.1.10 in another.
There is no trick or way around it, they must belong to a common subnet.
10-17-2007 05:54 AM
Thanks for the reply. I am going nuts with this ewan configuration.
I have 2 layer 3 switches connected into the ewan cloud and both of them need the same int vlan 100 with different IP subnets for connectivity like shown here http://www.cisco.com/en/US/netsol/ns341/ns396/ns223/ns227/networking_solutions_white_paper09186a00801e1225.shtml#wp41702
I cant figure out how to link these 2 l3 switches together without going through the cloud.
any advise?
10-17-2007 06:11 AM
Well, there is a way, if these are layer-3 switches and they are doing IP routing.
On switch 1:
ip route 172.16.1.136 255.255.255.248 vlan1
On switch 2:
ip route 172.16.1.128 255.255.255.248 vlan1
It's a bit messy.
Kevin Dorrell
Luxembourg
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