Notas estudo JNCIS-ENT parte 18

Nota: Este Post faz parte do guide de Routing.

Appendix C Routing Information Protocol

Protocolo IGP
RIPv1 RFC 1058
RIPv2 RFC 2453

Distance-vector protocol
Métrica baseada no hop count (Max 16 hops, o 16 é designado de infinity)
Algoritmo baseado no Bellman Ford
Updates enviados a cada 30 segundos via broadcast

RIP Message Types

Request message
Response message Рadverte at̩ 25 rotas por update

RIPv2 Features

Retrocompativel com RIPv1
Authenticacao simples ou MD5
Updates via Multicast 224.0.0.9, é possível usar também broadcast
Permite VLSM
Update inclui next-hop address
Retrocompativel com RIPv1
Em ambientes NBMA pode ser usado o unicast

RIPv1/v2 Interoperability

RFC 1723 define a interoperabilidade entre as 2 versões do RIP:

RIP-1 – Only RIPv1 messages transmit.
RIP-1 – Compatibility: Causes RIPv2 to broadcast its messages instead of multicasting them so that RIPv1 hosts can receive them.
RIP-2 – RIPv2 messages are multicast to destination address 224.0.0.9.
None – No updates are sent.

junOS RIP Support

RIPv1, RIPv2
Peer groups
Não adverte rotas by default, é necessário usar export policy
Default Preference 100
Modificar métricas IN e OUT

RIP Configuration

set protocol rip group <group-name> neighbor <interface-nama>

set policy-options policy-statement statics-to-rip from protocol static
set policy-options policy-statement statics-to-rip then accept

Export Policy

set protocols rip group rip-neighbors export statics-to-rip
set protocols rip group rip-neighbors neighbor fe-0/0/0.0
set protocols rip group rip-neighbors neighbor fe-0/0/1.0

[email protected]> show rip neighbor
Local Source Destination Send Receive In
Neighbor State Address Address Mode Mode Met
——– —– ——- ———– —- ——- —
em0.0 Up 10.1.23.2 224.0.0.9 mcast both 1
em1.0 Up 10.1.12.2 224.0.0.9 mcast both 1
lo0.0 Up 10.10.10.2 224.0.0.9 mcast both 1

Neighbor – Displays the name of the RIP neighbor.
State – Displays the state of the connection. The interface can be either up or down.
Source Address – Displays the source address.
Destination Address – Displays the destination of RIP updates, which can be either broadcast or multicast.
Send Mode – Displays the send options, which can be broadcast, multicast, none, or version 1.
Receive Mode – Displays the type of packets to accept, which can be both, none, version 1, or version 2.
In Met – Displays the metric added to incoming routes when advertising into RIP routes that were learned from other protocols.

[email protected]> show route protocol rip

inet.0: 8 destinations, 8 routes (8 active, 0 holddown, 0 hidden)
+ = Active Route, – = Last Active, * = Both

10.10.10.1/32 *[RIP/100] 00:04:35, metric 2, tag 0
> to 10.1.12.1 via em1.0
10.10.10.3/32 *[RIP/100] 00:00:36, metric 2, tag 0
> to 10.1.23.3 via em0.0
224.0.0.9/32 *[RIP/100] 00:04:07, metric 1
MultiRecv

[email protected]> show route advertising-protocol rip 10.1.23.2

inet.0: 8 destinations, 8 routes (8 active, 0 holddown, 0 hidden)
+ = Active Route, – = Last Active, * = Both

10.1.12.0/24 *[Direct/0] 00:06:08
> via em1.0
10.10.10.2/32 *[Direct/0] 00:06:04
> via lo0.0

[email protected]> show route receive-protocol rip 10.1.23.3

inet.0: 8 destinations, 8 routes (8 active, 0 holddown, 0 hidden)
+ = Active Route, – = Last Active, * = Both

10.10.10.3/32 *[RIP/100] 00:00:06, metric 2, tag 0
> to 10.1.23.3 via em0.0

[email protected]> show rip statistics
RIPv2 info: port 520; holddown 120s.
rts learned rts held down rqsts dropped resps dropped
2 0 0 0

em0.0: 1 routes learned; 2 routes advertised; timeout 180s; update interval 30s
Counter Total Last 5 min Last minute
——- ———– ———– ———–
Updates Sent 20 11 3
Triggered Updates Sent 1 0 0
Responses Sent 0 0 0
Bad Messages 0 0 0
RIPv1 Updates Received 0 0 0
RIPv1 Bad Route Entries 0 0 0
RIPv1 Updates Ignored 0 0 0
RIPv2 Updates Received 13 10 2
RIPv2 Bad Route Entries 0 0 0
RIPv2 Updates Ignored 0 0 0
Authentication Failures 0 0 0
RIP Requests Received 0 0 0
RIP Requests Ignored 0 0 0
none 0 0 0

RIP info – Displays the information about RIP on the specified interface.
port – Displays the UDP port number used for RIP.
update interval – Displays the number of seconds since the last update.
holddown – Displays the hold-down interval, in seconds.
timeout – Displays the timeout interval, in seconds.
bad msgs – Displays the number of bad messages received.
rts learned – Displays the number of routes learned through RIP.
rts held down – Displays the number of routes held down by RIP.
rqst dropped – Displays the number of request messages dropped by RIP.
resp dropped – Displays the number of response messages dropped by RIP.
Counter – Displays the list of counter types.
Total – Displays the total number of packets for the selected counter.

Referências:

Notas estudo JNCIS-ENT parte 1

Notas estudo JNCIS-ENT parte 2

Notas estudo JNCIS-ENT parte 3

Notas estudo JNCIS-ENT parte 4

Notas estudo JNCIS-ENT parte 5

Notas estudo JNCIS-ENT parte 6

Notas estudo JNCIS-ENT parte 7

Notas estudo JNCIS-ENT parte 8

Notas estudo JNCIS-ENT parte 9

Notas estudo JNCIS-ENT parte 10

Notas estudo JNCIS-ENT parte 11

Notas estudo JNCIS-ENT parte 12

Notas estudo JNCIS-ENT parte 13

Notas estudo JNCIS-ENT parte 14

Notas estudo JNCIS-ENT parte 15

Notas estudo JNCIS-ENT parte 16

Notas estudo JNCIS-ENT parte 17

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