Policy Type list box
|
Select the type of failover method you want to use. The page
will refresh to display only the fields relevant for your selection.
- IKE Keepalive
- GRE.
- GRE Dynamic IP
- DMVPN
|
GRE Elements
|
Routing Protocol list box
|
Select either EIGRP or OSPF as the routing protocol. See
Prerequisites for Configuring and Deploying GRE for more information.
|
Tunnel Interface IP field
|
Enter a private IP address, including the subnet mask in
bits, which defines a subnet in your enterprise to be used to support the
implementation of loopback for GRE. For example, 192.10.9.1/255.255.255.0.
Router MC creates a loopback interface on the peering devices, with an IP
address from this subnet. The loopback interfaces serve as the GRE tunnel
endpoints.
|
Tunnel Source IP field
|
For GRE Dynamic IP only. Enter a private IP address,
including the subnet mask in bits.
Note
| To provide robust, stable tunnels, Router MC creates a
static IP route using this IP address. If you change this IP address or you
change the failover and routing policy, Router MC does not remove the static
route from the device configuration. Please consider this if you have a problem
with unstable GRE tunnels.
|
|
Enable IP Multicast check box
|
Select this check box to enable multicast transmissions
across your GRE tunnels. IP multicast delivers application source traffic to
multiple receivers without burdening the source or the receivers, while using a
minimum of network bandwidth.
When IP Multicast is enabled, you must specify a rendezvous
point that acts as the meeting place for sources and receivers of multicast
data.
|
Rendezvous Point field
|
This field is only editable when the IP Multicast check box
is selected.
Enter the IP address of the interface that will serve as the
rendezvous point (RP) for multicast transmission. Sources send their traffic to
the RP. This traffic is then forwarded to receivers down a shared distribution
tree.
|
Allow direct spoke to spoke tunnels check box
|
For DMVPN only. Select this check box to enable direct
communication between spokes, without going through the hub.
Note
| Note With direct spoke-to-spoke communication, you must
use the Main Mode Address option for preshared key negotiation.
|
|
Advanced or Basic button
|
Click the Advanced button to display additional fields for
optional advanced configuration. Router MC provides default values for all the
advanced options. You can change these default values if required.
When the advanced fields are displayed, click the Basic
button to display only the basic configuration fields and hide the advanced
fields.
|
Process Number field
|
Router MC adds an additional Interior Gateway Protocol (IGP)
that is dedicated for IPSec and GRE secured communication. An IGP refers to a
group of devices that receive routing updates from one another by means of a
routing protocol, either EIGRP or OSPF. Each “routing group” is identified by a
logical number, the process number.
Enter a routing process number that will be used to identify
the secured IGP that Router MC adds when configuring GRE.
The number that you provide must be within the range
specified next to the field name. The default is the lowest value in the range.
This range can be changed in the Configuration Support Settings page in the
Admin tab.
|
Delay
|
Specify the throughput delay for the interface, in seconds.
|
Hello Interval EIGRP
|
Specify the interval between hello packets sent on the
interface, from 1 to 65535 seconds. The default is 5 seconds.
|
Hold Time EIGRP
|
Specify the number of seconds the router will wait to receive
a hello message before invalidating the connection. The default hold time is 15
seconds (three times the hello interval).
|
Tunnel Key field
|
For DMVPN only. Enter a number that identifies the tunnel
key. The tunnel key differentiates between different multipoint GRE (mGRE)
tunnel Non Broadcast Multiple Access (NBMA) networks. All mGRE interfaces in
the same NBMA network must use the same tunnel key value. If there are two mGRE
interfaces on the same router, they must have different tunnel key values.
|
Network ID (NHRP) field
|
For DMVPN only. All NHRP stations within one logical NBMA
network must be configured with the same network identifier. Enter a globally
unique, 32-bit network identifier within the range of 1 to 4294967295.
|
Hold Time (NHRP) field
|
For DMVPN only. Enter the time in seconds that routers will
keep information provided in authoritative Next Hop Resolution Protocol (NHRP)
responses. The cached IP-to-NBMA (non-broadcast multi-access) address mapping
entries are discarded after the hold time expires.
The default is 600 seconds.
|
Authentication (NHRP) field
|
For DMVPN only. Enter an authentication string that controls
whether the source and destination NHRP stations allow intercommunication. All
routers within the same network using NHRP must share the same authentication
string. The string can be up to eight characters long.
|
Apply button
|
Click to apply your definitions.
|
Clear button
|
The Clear button is only present if Global is selected in the
Object Selector. Click the Clear button to remove your current definitions.
|
Defaults button
|
The Defaults button is present when any object other than
Global is selected in the Object Selector. Click to remove your local
definitions and restore the inherited default values.
|