Specifications

UHP-1000 SATELLITE ROUTER
INSTALLATION AND OPERATION MANUAL, V. 2.5
(SW VERSION 2.5.X)
© ROMANTIS 2012 45 www.romantis.com
UHP Router determines any multicast traffic received from SCPC RX or TDMA RX interface and drops it if it is not
allowed to work with multicast traffic.
If multicast traffic is allowed then depending on mode of operation of the router it can be simultaneously
transmitted to the satellite network in accordance with the routing table (if IP screening is allowed) and to LAN
interface.
In IGMP mode the router verifies if there are any listeners on the LAN interface before routing this traffic further.
multicast mode off|static|igmp - Multicast routing mode
this command defines mode of multicast traffic handling, there
off – multicast traffic disabled
static – static routing of multicast traffic
igmp – dynamic IGMP routing of multicast traffic
The following command defines lifetime of dynamic multicast route:
multicast igmp timeout 1-30 :IGMP mappings lifetime (minutes)
where, 1-30 time in minutes. Default value - 5 minutes.
The following command displays actual status multicast routing:
show multicast - Multicast stats
Multicast IP Source IP(X.) LanT SatT Mcast: ON IGMP: ON TO: 5 min
229.0.0.2 10.0.0.73 3 2
239.255.255.239 10.0.0.21 3 0
239.255.255.250 10.0.0.50 3 0
224.0.0.251 10.0.0.100 3 0
224.0.0.252 10.0.0.98 3 0
Where,
Multicast IP – multicast address
Source IP(X.) – source of multicast traffic
LanT - lifetime counter of respective dynamic route on the LAN interface. Starting from
“3” this value it is reduced by 1 every 4th part of respective lifetime. When this value reaches 0 the
route is considered obsolete and is removed from the routing table. With every JOIN packet received
from respective LAN multicast listener the counter is reset to 3.
SatT - lifetime counter of respective dynamic route on the LAN interface. Starting from
“3” this value it is reduced by 1 every 4th part of respective lifetime. When this value reaches 0 the
route is considered obsolete and is removed from the routing table. With every JOIN packet received
from respective Satellite multicast listener the counter is reset to 3.
Mcast – multicast mode.
The following command allows debugging IGMP mode of the router:
debug igmp off|on - Debugging
where,
off – debugging is disabled
on – debugging is enabled
When debugging mode is active the following information will be displayed on console for every
IGMP packet:
uhp# debug igmp on
IGMP query out VLAN: 0
IGMP IN RXINT=LAN SIP=10.0.0.100 CMD=16 MCIP=224.0.0.251
IGMP IN RXINT=LAN SIP=10.0.0.62 CMD=16 MCIP=224.0.0.252
IGMP IN RXINT=LAN SIP=10.0.0.91 CMD=16 MCIP=239.255.255.239
IGMP IN RXINT=LAN SIP=10.0.0.254 CMD=12 MCIP=239.255.255.100
Deleted entry: 239.255.255.100
Debugging mode shows two main events: new IGMP packet from multicast listener and removal of obsolete
multicasting routing from the routing table.