I have an issue between two GRE tunnels between 2 different sites.
Indeed, i have the main router C2600 ("flash:c2600-js56i-mz.121-3.bin") at one site with this configuration :
interface Tunnel5 description Tunnel GRE vers Barbes ip address 172.16.248.121 255.255.255.252 tunnel source Ethernet0/0 tunnel destination 10.4.18.19 ! interface Ethernet0/0 description vers LAN Devoteam ip address 172.16.248.142 255.255.255.252 ! interface Ethernet0/1 description vers LAN Controle Acces ip address 172.16.248.1 255.255.255.240
ip route 172.16.248.80 255.255.255.240 Tunnel5
And i have another router more recent (Cisco 881) with this IOS : "flash:c800-universalk9-mz.SPA.154-3.M9.bin" and here is the config :
interface Tunnel5 description tunnel GRE vers Massy ip address 172.16.248.122 255.255.255.252 tunnel source FastEthernet0 tunnel destination 172.16.248.142
interface FastEthernet0 description Vers SWCABBU1N1 switchport access vlan 4 no ip address duplex half speed 100 ! interface FastEthernet1 description vers LAN Controle Acces switchport access vlan 248 no ip address duplex half speed 100
interface Vlan4 ip address 10.4.18.19 255.255.255.0 ! interface Vlan248 ip address 172.16.248.81 255.255.255.240 ! no ip forward-protocol nd no ip http server no ip http secure-server ! ! ip route 0.0.0.0 0.0.0.0 Tunnel5 ip route 172.16.248.142 255.255.255.255 10.4.18.4
At the main site, the tunnel5 and the line protocol are OK but in the another site, the tunnel5 is up but not the line protocol which is down.
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Cisco IOS-XE 17.3.1 – Catalyst Switching Updates
Table of Contents
Hardware Additions since IOS-XE 17.2.1
Key Summary Features
Platform and Infra Features
High Availability Features
Routing / MPLS / VPN Features