HP VPN Firewall Appliances Appendix Protocol Reference

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Contents
IP routing basics ··························································································································································· 1
Routing table ······································································································································································ 1
Dynamic routing protocols ··············································································································································· 2
Route preference ······························································································································································· 2
Load sharing ······································································································································································ 3
Route backup ····································································································································································· 3
Route recursion ·································································································································································· 3
Route redistribution ··························································································································································· 3
Static routing································································································································································· 4
Default route ································································································································································· 5
RIP ·················································································································································································· 6
Overview ············································································································································································ 6
RIP route entries ························································································································································ 6
RIP timers ··································································································································································· 6
Routing loop prevention ··········································································································································· 7
RIP operation ····································································································································································· 7
RIP versions ········································································································································································ 7
RIP message format ··························································································································································· 8
RIPv1 message format ·············································································································································· 8
RIPv2 message format ·············································································································································· 8
RIPv2 authentication message format ····················································································································· 9
Supported RIP features ······················································································································································ 9
Protocols and standards ··················································································································································· 9
OSPF ··········································································································································································· 11
Overview ········································································································································································· 11
OSPF packets·································································································································································· 11
LSA types ········································································································································································· 12
OSPF area ······································································································································································ 12
Backbone area and virtual links ·························································································································· 13
Stub area and totally stub area ··························································································································· 14
NSSA area and totally NSSA area ····················································································································· 14
Router types ···································································································································································· 15
Route types ······································································································································································ 15
Route calculation ···························································································································································· 16
OSPF network types ······················································································································································· 16
DR and BDR ···································································································································································· 17
Protocols and standards ················································································································································ 18
IS-IS ·············································································································································································· 19
Overview ········································································································································································· 19
Terminology ···································································································································································· 19
IS-IS address format ······················································································································································· 19
NSAP ······································································································································································ 19
Area address ························································································································································· 20
System ID ································································································································································ 20
SEL ··········································································································································································· 20
Routing method ······················································································································································ 20