Cabletron Systems SSR-GLX19-02, User Manual

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CoreWatch User’s Manual 151
Chapter 10: Configuring Multicast Routing on the SSR
6. If you are defining a new DVMRP interface, select the IP address or host name of the
interface on which you are enabling or disabling DVMRP.
You will not be able to change the IP address if you are modifying an existing DVMRP
interface.
7. If you enabled DVMRP on the interface, set DVMRP metric and threshold values on
the interface as discussed in the following table:
8. Click OK .
9. Repeat step 5 through step 8 until you configure all the DVMRP interfaces necessary
for your network environment.
Configuration Expert adds the interfaces on which DVMRP is enabled to the list of
interfaces found in the DVMRP Enabled Interface object. Configuration Expert adds
the interfaces on which DVMRP is disabled to the list of interfaces found in the
DVMRP Disabled Interface object.
Defining DVMRP Tunnels
Configuration Expert lets you define DVMRP tunnels for sending multicast traffic
between two end points. DVMRP treats a tunnel as another DVMRP interface. When
configuring tunnels, you specify the IP addresses of the tunnel’s two end points and then
set DVMRP parameters as you do on interfaces.
To define a DVMRP tunnel:
1. Start Configuration Expert if you have not already done so.
2. Open the configuration file you want to modify and then double-click that file’s
Routing Configuration object.
3. Double-click the IP Routing Configuration object.
4. Double-click the IP Tunnel Configuration object. Then do one of the following:
Table 14. DVMRP metric and threshold values
Field Description
Metric Enter a number from 1 to 16 in the Metric box to specify the
metric (cost) of the interface.
Threshold Enter a number from 1 to 255 to specify the tunnel’s multicast
Time to Live (TTL) Threshold box.
DVMRP uses the TTL to filter outbound traffic. Packets with a
TTL value less than the one you specify are not sent any further.