Hitachi GR2000 - Manual (Page 95)

Product Overview
GR2K-GA-1002 2-39
Rev 6.03
Figure 2-39 Routing Software Block Diagram
*
Note 1: Effective only when the basic plus expansion software3 (ROUTE-OS3) is applied.
Note 2: Effective only when the basic plus expansion software6 (ROUTE-OS6) is applied.
Device
RM
NIF NIF
Kernel (BSD/OS) IPv6 Relay/NDP/IGMPv6 (Note 2)
Boot
Crossbar switch (CSW)
Device
control
Node control, RP control, interface control, duplexed system control common RM control, and logging
Route control processing
(GateD)
RIP, OSPF, BGP, RIPng,
BGP4+ (Note 2) (Unicast)
IGMP,
DVMRP, PIM
(Multicast)
MPLS/IP-VPN,
LDP, CR-LPD
(Note 1)
Bridge
Processing
IPX
Processing
Command group (CLI)
ping, telnet, ftp, boot, log,
show route, show ospf,
config, etc.
Browser
Interface
(httpd)
SNMP
Agent
Ethernet
Driver
PPP
Driver
Frame relay
Driver
ATM
Driver
IP relay/ARP/ICMP
IPX/bridge
Relay
MAC
LSI
MAC
LSI
Application
Process
group
Kernel
RP Packet forwarding engine
Control of routing/QoS
table search engine