Allied Telesis at-8516f User Guide

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Rapier Switch User Guide
Software Release 2.6.1
C613-02025-00 REV C
Internet Protocol (IP)
The switch performs IP routing at wire speed between VLANs that have been 
configured as IP interfaces. For example, to add the admin VLAN as an IP 
interface, giving it an IP address of 192.168.163.39 in the subnet 192.168.163.0, 
first enable IP using the command:
ENABLE IP
Then use either of the following commands:
ADD IP INTERFACE=vlan-admin IPADDRESS=192.168.163.39 
MASK=255.255.255.0
ADD IP INTERFACE=vlan11 IPADDRESS=192.168.163.39 
MASK=255.255.255.0
The command:
SHOW IP INTERFACE
displays the interfaces enabled for IP routing (Figure 24).
Figure 24: Example output from the SHOW IP INTERFACE command.
IP Multicasting
Static multicast forwarding can be configured using the ADD IP INTERFACE 
or SET IP INTERFACE commands.
DVMRP, PIM Sparse Mode, and PIM Dense Mode are enabled with a special feature 
license. To obtain a special feature license contact an Allied Telesyn authorised 
distributor or reseller.
The switch supports dynamic IP multicast routing protocols:
DVMRP (Distance Vector Multicast Routing Protocol)
PIM-DM (Protocol Independent Multicast – Dense Mode)
PIM-SM (Protocol Independent Multicast – Sparse Mode).
Management of group members is performed using IGMP (Internet Group 
Management Protocol). IGMP snooping reduces unnecessary multicast traffic 
between members of the same VLAN.Full multicast functionality requires 
IGMP and at least one of DVMRP, PIM Dense Mode or PIM Sparse Mode. See 
the IP Multicasting chapter in the Rapier Switch Software Reference for detailed 
information about multicasting. 
Interface     Type     IP Address       Bc Fr PArp  Filt RIP Met.   SAMode  IPSc
Pri. Filt     Pol.Filt Network Mask     MTU   VJC   GRE  OSPF Met.  DBcast  Mul.
--------------------------------------------------------------------------------
LOCAL         -        Not Set          -  n  -     ---  -          -       --
---           ----     -                -     -     ---  -          -       ---
vlan11        Static   192.168.163.39   1  y  On    ---  01         Pass    --
---           ---      255.255.255.0    1500  -     ---  0000000001 No      On
ppp1          Dynamic  0.0.0.0          1  y  -     ---  01         Pass    --
---           ---      255.255.255.255  1500  Off   ---  0000000001 No      On
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