occur. In this case, the routing table defines the tunnel itself as the best path to a tunnel
destination. To prevent recursive tunnels, differentiate routing information for the tunnel
network and the transport networks with one or both of the following techniques:
•
Use different routing protocols for the tunnel network and the transport networks.
•
Define a static route to the tunnel destination.
NOTE:
If you define a static route to a tunnel destination, be careful not to create routing
loops.
Figure 20 on page 244 illustrates how to prevent recursive tunnels by using different routing
protocols for the tunnel network and the transport networks.
Figure 20: Transport and Tunnel Networks Using Different Routing
Protocols
Creating Multicast VPNs Using GRE Tunnels
For information about configuring multicast VPNs using GRE tunnels, see
Configuring
PIM for IPv4 Multicast
in
JunosE Multicast Routing Configuration Guide
.
Monitoring IP Tunnels
You can monitor DVMRP and GRE tunnels by using the following commands.
show dvmrp tunnel
•
Use to display information about DVMRP tunnels.
•
To view detailed information about tunnels, specify the
detail
keyword.
•
To view the number of tunnels in a specific state, specify the
state
keyword and the
state of the tunnel (disabled, down, enabled, lower-down, not-present, up).
•
To view the state of a specific tunnel, specify a tunnel name.
•
To view the number of tunnels associated with that IP address, specify an IP address.
•
To view the number of tunnels associated with an IP address on the virtual router,
specify an IP address with the
virtual-router
keyword and the name of the virtual router.
•
Field descriptions
Copyright © 2010, Juniper Networks, Inc.
244
JunosE 11.2.x IP Services Configuration Guide
Содержание JUNOSE 11.2.X IP SERVICES
Страница 6: ...Copyright 2010 Juniper Networks Inc vi...
Страница 8: ...Copyright 2010 Juniper Networks Inc viii JunosE 11 2 x IP Services Configuration Guide...
Страница 18: ...Copyright 2010 Juniper Networks Inc xviii JunosE 11 2 x IP Services Configuration Guide...
Страница 22: ...Copyright 2010 Juniper Networks Inc xxii JunosE 11 2 x IP Services Configuration Guide...
Страница 28: ...Copyright 2010 Juniper Networks Inc 2 JunosE 11 2 x IP Services Configuration Guide...
Страница 116: ...Copyright 2010 Juniper Networks Inc 90 JunosE 11 2 x IP Services Configuration Guide...
Страница 144: ...Copyright 2010 Juniper Networks Inc 118 JunosE 11 2 x IP Services Configuration Guide...
Страница 230: ...Copyright 2010 Juniper Networks Inc 204 JunosE 11 2 x IP Services Configuration Guide...
Страница 262: ...Copyright 2010 Juniper Networks Inc 236 JunosE 11 2 x IP Services Configuration Guide...
Страница 294: ...Copyright 2010 Juniper Networks Inc 268 JunosE 11 2 x IP Services Configuration Guide...
Страница 328: ...Copyright 2010 Juniper Networks Inc 302 JunosE 11 2 x IP Services Configuration Guide...
Страница 345: ...PART 2 Index Index on page 321 319 Copyright 2010 Juniper Networks Inc...
Страница 346: ...Copyright 2010 Juniper Networks Inc 320 JunosE 11 2 x IP Services Configuration Guide...
Страница 356: ...Copyright 2010 Juniper Networks Inc 330 JunosE 11 2 x IP Services Configuration Guide...