Specifications

Alcatel-Lucent Page 28
OmniSwitch 6850 Series
• Static routing
• RIP v1 & v2
• OSPF v2
• BGP v4
Multicast
• IGMP v1, v2 & v3 snooping
• PIM-SM
• PIM-DM (Future Release)
• DVMRP
Network Protocol
• TCP/IP stack
• ARP
• DHCP relay 4.1.5
• Generic UDP relay per VLAN
Resilience
• VRRP v2
L3 Routing Protocols (IPv6)
IP Routing
• Static routing
• RIP ng
• OSPF v3
Multicast
• MLD snooping
• PIM-SM
• PIM-DM (Future Release)
Network Protocol
• TCP/IP stack
• DHCP relay (including generic UDP relay)
• ARP
Resilience
• VRRPv3 (Future Release)
Layer-3 Routing (IPX)
IPX Routing
• Static routing
• RIP/SAP
The Virtual Router Redundancy Protocol (VRRP) The Virtual Router Redundancy Protocol (VRRP) is a standard router redundancy protocol supported
in IP version 4. It is based on RFC 2338 and provides redundancy by eliminating the single point of
failure inherent in a default route environment.
VRRP allows routers on a LAN to back up a default route. VRRP dynamically assigns responsibility
for a virtual router to a physical router (VRRP router) on the LAN. The virtual router is associated with
an IP address (or set of IP addresses) on the LAN. A virtual router master is elected to forward packets
for the virtual router’s IP address. If the master router becomes unavailable, the highest priority backup
router will transition to the master state.
In addition, VRRP Tracking is also supported. A virtual router’s priority may be conditionally
modified to prevent another router from taking over as master. Tracking policies are used to
conditionally modify the priority setting whenever a VLAN, slot/port, and/or IP address associated
with a virtual router goes down.
VRRP Specifications:
RFCs Supported:
 RFC 2338–Virtual Router Redundancy Protocol
 RFC 2787–Definitions of Managed Objects for the Virtual Router Redundancy Protocol
Compatible with HSRP: No
Maximum number of virtual router instances: 255
(A virtual router is defined by a virtual router identifier (VRID) and a set of associated IP addresses
on the LAN)
Maximum number of IP addresses: 1 for the IP address owner; more than 1 address may be configured
if the router is a backup for a master router that supports multiple addresses
IGMP IGMP is used by IPv4 systems (hosts and routers) to report their IP multicast group memberships to
any neighboring multicast routers. IGMP version 2 (IGMPv2) handles forwarding by IP multicast
destination address only. IGMP version 3 (IGMPv3) handles forwarding by source IP address and IP
multicast destination address. OmniSwitch 6850 Series switches support IGMPv2 and IGMPv3.
In IGMPv2, each membership report contains only one multicast group. In IGMPv3, membership
reports contain many multicast groups up to the Maximum Transmission Unit (MTU) size of the
interface. IGMPv3 uses source filtering and reports multicast memberships to neighboring routers by
sending membership reports. IGMPv3 also supports Source Specific Multicast (SSM) by allowing
hosts to report interest in receiving packets only from specific source addresses or from all but specific
source addresses.
Note.
It should be noted that in the current release SSM pack
et forwarding is not done between ports in