RIPv2 / routing domain

Hello

I found there is a field in the header of RIPv2 which is: routing domain.

It seems to be like a process id (as vlan id) so that routers have not the same routing domain will not process packets of RIPv2.

1. am I right?

2. how to change the value of this field?

Thank you

Hello

I think that I now know more about the "routing domain".

First of all, RIPv2 has been codified in 1388 RFC. Indeed, this RFC defined a field routing domain inside the RIP message header. The routing domain has been defined as follows (RFC 1388 Section 3.2):

   The Routing Domain (RD) number is the number of the routing process    to which this update belongs.  This field is used to associate the    routing update to a specific routing process on the receiving router.    The RD is needed to allow multiple, independent RIP "clouds" to co-    exist on the same physical wire.  This gives administrators the    ability to run multiple, possibly parallel, instances of RIP in order    to implement simple policy.  This means that a router operating    within one routing domain, or a set of routing domains, should ignore    RIP packets which belong to another routing domain.  RD 0 is the    default routing domain. 

However, in the RFC 1721 "RIP Version 2 Protocol Analysis", article 2 stipulates:

   The significant change from RFC 1388 is the removal of the domain    field.  There was no clear agreement as to how the field would be    used, so it was determined to leave the field reserved for future    expansion.

Accordingly, the RFC RIPv2 updates, namely the current 2453 RFC and RFC 1723 removed the routing domain label and instead treat the must-be-zero field, or else not obliterated. Your Wireshark obviously believes that the RFC 1388 RIPv2 is running and try to interpret a field not used in the header of RIPv2.

I discovered later that this behavior in Wireshark can be configured: choose Edit-> preferences, and then click protocols, find the RIP, and there you will see a box saying 'field display routing domain '. Uncheck the box.

Best regards

Peter

Tags: Cisco Network

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    I had a problem in Routing and remote access on windows 2003 server.  This server is already configured as a file server, domain server, and application server. Also configured as a router (thanks to access routing & remote) to connect the three different networks with each other. If this server has three NICs installed and each separate NIC network cards represent.

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    IPv4 routing table
    ===========================================================================
    List of the interface
    0x1 ........................... MS TCP Loopback interface
    0x2... 00 30 05 8f ad 5 c... Broadcom NetXtreme Gigabit Ethernet - Mi Teefer2
    niport
    0 x 3... 0E 00 c4 f8 a7 0c... Network Intel(r) PRO/1000 GT Desktop Adapter - Teefer2 M
    iniport
    0 x 4... 0E 00 0c a7 c5 85... Intel (r) PRO/1000 GT Desktop Adapter #2 - Teefer
    2 miniport
    ===========================================================================
    ===========================================================================
    Active routes:
    Network Destination gateway metric Interface subnet mask
    0.0.0.0 0.0.0.0 192.42.161.112 192.42.161.220 1
    127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
    192.42.160.0 255.255.255.0 192.42.160.220 192.42.160.220 20
    192.42.160.220 255.255.255.255 127.0.0.1 127.0.0.1 20
    192.42.160.255 255.255.255.255 192.42.160.220 192.42.160.220 20
    192.42.161.0 255.255.255.0 192.42.161.220 192.42.161.220 20
    192.42.161.220 255.255.255.255 127.0.0.1 127.0.0.1 20
    192.42.161.255 255.255.255.255 192.42.161.220 192.42.161.220 20
    192.42.162.0 255.255.255.0 192.42.162.220 192.42.162.220 20
    192.42.162.220 255.255.255.255 127.0.0.1 127.0.0.1 20
    192.42.162.255 255.255.255.255 192.42.162.220 192.42.162.220 20
    224.0.0.0 240.0.0.0 192.42.160.220 192.42.160.220 20
    224.0.0.0 240.0.0.0 192.42.161.220 192.42.161.220 20
    224.0.0.0 240.0.0.0 192.42.162.220 192.42.162.220 20
    255.255.255.255 255.255.255.255 192.42.160.220 192.42.160.220 1
    255.255.255.255 255.255.255.255 192.42.161.220 192.42.161.220 1
    255.255.255.255 255.255.255.255 192.42.162.220 192.42.162.220 1
    Default gateway: 192.42.161.112
    ===========================================================================
    Persistent routes:
    None

    Sorry if I'm not able to explain properly. Please let me know if you have to explain more about it...

    Thank you all.

    Mahesh

    Hello Manu,

    Please post this question in the forums TechNet for Windows Server 2003. They will be able to guide you further.

    http://social.technet.Microsoft.com/forums/WindowsServer/en-us/home

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