Displaying gre tunneling information – Brocade Multi-Service IronWare Switching Configuration Guide (Supporting R05.6.00) User Manual
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Multi-Service IronWare Switching Configuration Guide
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GRE IP tunnel
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Brocade(config-tnif-1)# ip address 10.10.3.1/24
Brocade(config-tnif-1)# keepalive 5 4
Brocade(config-tnif-1)# exit
Brocade(config)# ip route 10.10.2.0/24 10.10.3.2
Configuration example for Brocade B
Brocade(config)# interface ethernet 5/1
Brocade(config-if-e10000-5/1)# ip address 131.108.5.2/24
Brocade(config)# interface tunnel 1
Brocade(config-tnif-1)# tunnel source ethernet 5/1
Brocade(config-tnif-1)# tunnel destination 36.0.8.108
Brocade(config-tnif-1)# tunnel mode gre ip
Brocade(config-tnif-1)# keepalive 5 4
Brocade(config-tnif-1)# ip address 10.10.3.2/24
Brocade(config-tnif-1)# exit
Brocade(config)# ip route 10.10.1.0/24 10.10.3.1
NOTE
Traffic from a GRE tunnel entering a MPLS tunnel is not supported.
Displaying GRE tunneling information
You can display GRE tunneling information using the show ip interface, show ip route and show
interface tunnel commands as shown in the following.
Brocade# show ip interface tunnel 1
Interface Tunnel 1
port enabled
port state: UP
ip address: 10.255.255.13/24
Port belongs to VRF: default
encapsulation: ETHERNET, mtu: 1476
directed-broadcast-forwarding: disabled
ip icmp redirect: enabled
No inbound ip access-list is set
No outbound ip access-list is set
No Helper Addresses are configured.
Syntax: show ip interface tunnel tunnel-no
The show ip route command displays routes that are pointing to a GRE tunnel as shown in the
following.
Brocade# show ip route
Total number of IP routes: 6
Type Codes - B:BGP D:Connected I:ISIS S:Static R:RIP O:OSPF; Cost -
Destination Gateway Port Cost Type
2 10.10.10.0/24 DIRECT gre_tnl 1 0/0 D
Brocade# show interface tunnel 1
Tunnel1 is up, line protocol is up
Hardware is Tunnel
Tunnel source 10.45.3.3
Tunnel destination is 10.45.48.1
Tunnel mode gre ip
No port name
Internet address is 10.255.255.13/24,
Tunnel TOS 0, Tunnel TTL 255 MTU 1476 bytes
Keepalive is not Enabled