10-11-2022 01:25 PM
I have a L2VPN provided by a service provider from Branch A to Branch B. I was provided same VLAN ID 1137 to tag on my interface ron the two switches. At branch A, I’m using Cisco 3750g and Branch B I’m using a Netgear 4300 switch. I have configured the two switches with the provided VLAN and assign IP address on the interface. Currently the two switches can reach each other over the L2VPN. Also, Branch A LAN can reach Branch A switch and Branch B LAN can reach Branch B switch.
The problem now is that the existing LAN network on the two branches cannot reach one another which is the purpose of this L2VPN which is to provide connectivity between Branch A lan and Branch B lan. So I did a static route for both switches making the next hop of Branch A to be branch B switch and vice versa.
unfortunately, the two LAN still cannot communicate.
I’m new to this L2VPN.
I need your professional advice to resolve this issue. I await your kind feedback
Thanks in anticipation
10-11-2022 01:31 PM
"Currently the two switches can reach each other over the L2VPN"........how are you seeing/checking this connectivity?
10-11-2022 01:38 PM
Thanks for your feedback
I configured an IP address on the VLAN 1137 provided on the switches and that's the only connection reachable at both end via the L2VPN
Branch A 172.16.100.2/24
Branch B 172.16.100.5/24
Only this network is reachable, others are not.
10-11-2022 01:41 PM
What are the static routes you have configured on each side?
10-11-2022 01:47 PM
Please find below as requested:
Branch A
ip route 192.168.0.0 255.255.255.0 172.16.100.5
ip route 192.168.120.0 255.255.255.0 172.16.100.5
ip route 192.168.125.0 255.255.255.0 172.16.100.5
Branch B
ip route 192.168.140.0 255.255.255.0 172.16.100.2
ip route 192.168.135.0 255.255.255.0 172.16.100.2
ip route 192.168.150.0 255.255.255.0 172.16.100.2
10-11-2022 03:36 PM
can you add static ARP in each CE for the IP of other side ?
10-11-2022 01:49 PM
How does a traceroute look from each end?
10-11-2022 02:53 PM
Branch B
(M4300-12X12F) #traceroute 172.16.100.2
Traceroute to 172.16.100.2 ,30 hops max 0 byte packets:
1 172.16.100.2 <1 ms * <1 ms
Hop Count = 1 Last TTL = 1 Test attempt = 3 Test Success = 2
(M4300-12X12F) #traceroute 192.168.0.1
Traceroute to 192.168.0.1 ,30 hops max 0 byte packets:
1 172.16.100.5 Destination host unreachable Destination host unreachable Destination host unreachable
Hop Count = 1 Last TTL = 1 Test attempt = 3 Test Success = 0
Branch A
Lily_Core_SW_3750g#trace 172.16.100.5
Type escape sequence to abort.
Tracing the route to 172.16.100.5
1 172.16.100.5 8 msec 9 msec 8 msec
Lily_Core_SW_3750g#trace 192.168.253.1
Type escape sequence to abort.
Tracing the route to 192.168.253.1
1 * * *
2 * * *
3 * * *
4 * * *
5 * * *
6 *
10-11-2022 02:19 PM
Hello,
what Cisco device is this one, and which IOS version are you running ? Can you post the full running config of the Cisco ?
10-12-2022 12:39 AM
The problem is now resolved after changing the DNS address to the local DNS server.
10-12-2022 12:52 AM
Good to know. Can you post the final configuration for reference ?
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