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102 AT-8800 Series Switch User Guide
Software Release 2.6.1
C613-02039-00 REV A
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 22).
Figure 22: 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.
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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