M3SR Series 4100
Editing the Multicast Routing Table
5.86
Operating Manual 6175.4760.02 – 01
The TTL threshold of a multicast routing table entry defines the minimum TTL that incom-
ing packets must exceed in order to be forwarded.
In our example the initial value of the packet's TTL must be 3 in order to pass the first
hop (Radio1), since its matching multicast routing table entry has a configured TTL
threshold of 2. This value ensures that the packet has a large enough TTL to pass the
second hops (Radio2, 3, 4) on the way to its destinations.
There is nothing wrong in leaving the default TTL threshold of 1 unchanged, especially
when the entire network topology is unknown (like number of hops from source to desti-
nation).
A proper TTL threshold configuration can avoid an unnecessary forwarding of packets
whose (too small) TTL will cause next hop routers to drop them.
The necessary configuration for PC 1 to 4 is omitted.
Changing the Multicast Routing Table
Figure 5.23 IPoA Multicast Routing Menu
ICN-4D-G-231051-R-D0894-00003-A-01-1
Summary of Contents for M3SR 4100 Series
Page 15: ...M3SR Series 4100 Documentation Overview xiv Operating Manual 6175 4760 02 01...
Page 48: ...M3SR Series 4100 Index 34 Operating Manual 6175 4760 02 01 ZF4401 mod 02 2 10...
Page 70: ...M3SR Series 4100 Radio Control 1 22 Operating Manual 6175 4760 02 01...
Page 116: ...M3SR Series 4100 Example Configuration 2 46 Operating Manual 6175 4760 02 01...
Page 336: ...M3SR Series 4100 Priority Channel 3 220 Operating Manual 6175 4760 02 01...
Page 696: ...M3SR Series 4100 Remote Control 8 4 Operating Manual 6175 4760 02 01...
Page 697: ...Operating Manual 6175 4760 02 01 9 1 M3SR Series 4100 Drawings 9 Drawings...
Page 706: ...M3SR Series 4100 Drawings 9 10 Operating Manual 6175 4760 02 01...
