Cabletron Systems SSR-GLX19-02, User Manual

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CoreWatch User’s Manual 475
Glossary
Broadcast Network
Network supporting two or more attached routers and is capable of addressing a single
physical message to all of those routers.
Neighboring routers are discovered dynamically on broadcast networks using OSPF’s
Hello Protocol. The Hello Protocol takes advantage of the broadcast capability. The
protocol also makes use of existing multicast capabilities.
Ethernet is an example of a broadcast network.
Command Line Interface (CLI)
Set of Cabletron Systems commands that let you monitor and configure SSRs.
Configuration Expert
Cabletron Systems utility that lets you perform the following tasks:
• Change system information
• Configure bridging polices
• Configure VLANs
• Configure IP and IPX routing
• Configure multicast routing
• Set QoS policies
• Set ACLs and security filters
• Configure multiple configuration files on the SSR
Designated Bridge
Bridge responsible for forwarding frames to the LAN segment.
Designated Router
OSPF router that generates the network's link-state advertisement, establishes
adjacencies, and has other special responsibilities in the running of the protocol.
Designated routers reduce the number of adjacencies required on a multi-access network.
This in turn reduces the amount of routing protocol traffic and the size of the topological
database.
Each multiaccess network that has two or more attached routers has a designated router.
Distance Vector Multicast Routing Protocol (DVMRP)
An IP multicast routing protocol. It is a distance-vector based protocol (similar to RIP) that
keeps its own unicast routing information.
Down
Interface state that indicates an interface is unusable. The interface cannot send or receive
traffic.