User guide

September 2009
OmniSwitch 6400/6850/6855/9000/9000E------ Release 6.4.2.R01 Page 45 of 79
• BPDU mirroring will be disabled by default on all OS9000s with B2 revision ASICs. (Contact
Service and Support to enable)
• BPDU mirroring will be enabled by default on all OS9000s with A0/A1 revision ASICs.
• Source learning must be disabled or overridden on the ports belonging to the remote port
mirroring VLAN on the intermediate and destination switches.
• The QoS redirect feature can be used to override source learning.
RIPv1/RIPv2
Routing Information Protocol (RIP) is a widely used Interior Gateway Protocol (IGP) that uses hop
count as its routing metric. RIP-enabled routers update neighboring routers by transmitting a copy of
their own routing table. The RIP routing table uses the most efficient route to a destination, that is, the
route with the fewest hops and longest matching prefix.
The OmniSwitch supports RIP version 1 (RIPv1), RIP version 2 (RIPv2), and RIPv2 that is compatible
with RIPv1. In addition, text key and MD5 authentication, on an interface basis, for RIPv2 is also
supported as well as ECMP for up to 16 paths.
RIPng
The OmniSwitch supports Routing Information Protocol next generation (RIPng) for IPv6 networks.
RIPng is based on RIPv1/RIPv2 and is an Interior Gateway Protocol (IGP) best suited for moderate
sized networks.
RIP Timer Configuration
• Update —The time interval between advertisement intervals.
• Invalid—The amount of time before an active route expires and transitions to the garbage
state.
• Garbage—The amount of time an expired route remains in the garbage state before it is
removed from the RIB.
• Holddown—The amount of time during which a route remains in the hold-down state.
Redirect Policies (Port and Link Aggregate)
Two policy action commands are available for configuring QoS redirection policies: policy action redi-
rect port and policy action redirect linkagg. A redirection policy sends traffic that matches the policy to
a specific port or link aggregate instead of the originally intended destination. This type of policy may
use any condition; the policy action determines which port or link aggregate to which the traffic is sent.
RMON
Remote Network Monitoring (RMON) is an SNMP protocol used to manage networks remotely.
RMON probes can be used to collect, interpret, and forward statistical data about network traffic from
designated active ports in a LAN segment to an NMS (Network Management System) application for
monitoring and analyzing without negatively impacting network performance. RMON software is fully
integrated in the software to acquire statistical information.
This feature supports basic RMON 4 group implementation in compliance with RFC 2819, including
the Ethernet Statistics, History (Control & Statistics), Alarms, and Events groups.
Router Discovery Protocol (RDP)
The Router Discovery Protocol (RDP) is an extension of ICMP that allows end hosts to discover
routers on their networks. The implementation of RDP supports the router requirements as defined in