ZyXEL Communications GS2210-8 User Manual page 192

The following t able describes t he labels in t his screen.
Table 80 Advanced Applicat ion > Mult icast > I Pv4 Mult icast > I GMP Snooping
LABEL DESCRIPTION
I GMP Snooping Use t hese set t ings t o configure I GMP snooping.
Act ive Select Act ive t o enable I GMP Snooping t o forward group m ult icast t raffic only t o port s
t hat are m em bers of t hat group.
Querier Select t his opt ion t o allow t he Swit ch t o send I GMP General Query m essages t o t he VLANs
wit h t he m ult icast host s at t ached.
Host Tim eout Specify t he t im e ( from 1 t o 16 711 450) in seconds t hat elapses before t he Swit ch
rem oves an I GMP group m em bership ent ry if it does not receive report m essages from
t he port .
802.1p Select a priorit y level ( 0- 7) t o which t he Swit ch changes t he priorit y in out going I GMP
Priorit y
cont rol packet s. Ot herwise, select N o- Ch a n ge t o not replace t he priorit y.
I GMP Filt ering Select Act ive t o enable I GMP filt ering t o cont rol which I GMP groups a subscriber on a port
can j oin.
I f you enable I GMP filt ering, you m ust creat e and assign I GMP filt ering profiles for t he
port s t hat you want t o allow t o j oin m ult icast groups.
Unknown Specify t he act ion t o perform w hen t he Swit ch receives an unknown m ult icast fram e.
Mult icast Fram e Select D r op t o discard t he fram e( s) . Select Flooding t o send t he fram e( s) t o all port s.
Reserved The I P address range of 224.0.0.0 t o 224.0.0.255 are reserved for m ult icast ing on t he
Mult icast Group local net work only. For exam ple, 224.0.0.1 is for all host s on a local net work segm ent and
224.0.0.9 is used t o send RI P rout ing inform at ion t o all RI P v2 rout ers on t he sam e
net work segm ent . A m ult icast rout er will not forward a packet w it h t he dest inat ion I P
address wit hin t his range t o ot her net works. See t he I ANA web sit e for m ore inform at ion.
The layer- 2 m ult icast MAC addresses used by Cisco layer- 2 prot ocols,
01: 00: 0C: CC: CC: CC and 01: 00: 0C: CC: CC: CD, are also included in t his group.
Specify t he act ion t o perform when t he Swit ch receives a fram e wit h a reserved m ult icast
address. Select D r op t o discard t he fram e( s) . Select Flooding t o send t he fram e( s) t o all
port s.
Port This field displays t he port num ber.
* Set t ings in t his row apply t o all port s.
Use t his row only if you want t o m ake som e set t ings t he sam e for all port s. Use t his row
first t o set t he com m on set t ings and t hen m ake adj ust m ent s on a port- by- port basis.
Changes in t his row are copied t o all t he port s as soon as you m ake t hem .
I m m ed. Leave Select t his opt ion t o set t he Swit ch t o rem ove t his port from t he m ult icast t ree when an
I GMP version 2 leave m essage is received on t his port .
Select t his opt ion if t here is only one host connect ed t o t his port .
Norm al Leave Ent er an I GMP norm al leave t im eout value ( from 200 t o 6,348,800) in m iliseconds. Select
t his opt ion t o have t he Swit ch use t his t im eout t o updat e t he forwarding t able for t he port .
I n norm al leave m ode, when t he Swit ch receives an I GMP leave m essage from a host on a
port , it forwards t he m essage t o t he m ult icast rout er. The m ult icast rout er t hen sends out
an I GMP Group- Specific Query ( GSQ) m essage t o det erm ine whet her ot her host s
connect ed t o t he port should rem ain in t he specific m ult icast group. The Swit ch forwards
t he query m essage t o all host s connect ed t o t he port and wait s for I GMP report s from
host s t o updat e t he forwarding t able.
This defines how m any seconds t he Swit ch wait s for an I GMP report before rem oving an
I GMP snooping m em bership ent ry when an I GMP leave m essage is received on t his port
from a host .
Chapter 24 Multicast
GS2210 Series User's Guide
192