Quagga

• Quagga Official Site
• Dual WAN router with dual ISP using BGP and OSPF
• OSPF Configuration Examples
• Quagga Documentation
• 5 Best Network Simulators for Cisco Exams: CCNA, CCNP, and CCIE

Do not create interfaces using Quagga. Use /etc/network/interfaces.

OSPF

• seq id
• router-id
• area

ospf 1 router-id 3.3.3.3 filter-policy ip-prefix ospfin import

area 0.0.0.0 network 192.168.2.2 0.0.0.0

ip ip-prefix ospfin index 10 permit 4.4.4.4 24

• GNS3 Advantages:
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最小配置 zebra.conf

hostname Router
password zebra
enable password zebra

log stdout

hostname OSPFRouter
password ospf
enable password ospf

log stdout

# OSPFv2
tcpdump -i eth0 -n 'ip[9]==89'
# OSPFv3
tcpdump -i eth0 -n ip6 proto 0x59
# BGP
tcpdump -i eth0 tcp proto 179

KEYID identifies secret key used to create the message digest. This ID is part of the protocol and must be consistent across routers on a link.

KEY is the actual message digest key, of up to 16 chars (larger strings will be truncated), and is associated with the given KEYID.

service integrated-vtysh-config saves each daemon-specific configuration file in a separate file. At a minimum for a daemon to start, that daemon must be enabled and its daemon-specific configuration file must be present, even if that file is empty.

/etc/quagga/Quagga.conf

telnet localhost 2601

zebra is an IP routing manager. It provides kernel routing table updates, interface lookups, and redistribution of routes between different routing protocols.

/etc/quagga zebra.conf /etc/quagga/vtysh.conf

routing daemons in use, and there is one manager daemon ripd, ripngd, ospfd, ospf6d, bgpd zebra

sudo vtysh

/etc/services

zebrasrv      2600/tcp                 # zebra service
zebra         2601/tcp                 # zebra vty
ripd          2602/tcp                 # RIPd vty
ripngd        2603/tcp                 # RIPngd vty
ospfd         2604/tcp                 # OSPFd vty
bgpd          2605/tcp                 # BGPd vty
ospf6d        2606/tcp                 # OSPF6d vty
ospfapi       2607/tcp                 # ospfapi
isisd         2608/tcp                 # ISISd vty
babeld        2609/tcp                 # BABELd vty
nhrpd         2610/tcp                 # nhrpd vty
pimd          2611/tcp                 # PIMd vty
ldpd          2612/tcp                 # LDPd vty
eigprd        2613/tcp                 # EIGRPd vty
bfdd          2617/tcp                 # bfdd vty
fabricd       2618/tcp                 # fabricd vty
vrrpd         2619/tcp                 # vrrpd vty

ospf

default-information originate always

default-information originate always metric 10

livinginternet.com/i/iw_route_igp_ospf.htm

The main difference between OSPF and RIP is that RIP only keeps track of the closest router for each destination address, while OSPF keeps track of a complete topological database of all connections in the local network.

This was the first search term google returned when I pasted your question there.

To more closely answer your question, if you're maintaing a very small network, RIP is fine, if you go beyond 3 or 4 routers then perhaps look at a more advanced routing protocol like OSPF.

iBGP