Event ID 30021 — RRAS RIP Packet Discarding

Updated: December 16, 2008

Applies To: Windows Server 2008 R2

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A Router Information Protocol (RIP) for IP environment automatically adds and removes routes as networks are added and removed from the network. If the router is discarding RIP packets, RIP configuration with peer routers might fail.

Event Details

Product: Windows Operating System
ID: 30021
Source: Microsoft-Windows-RasRoutingProtocols-IPRIP2
Version: 6.1
Symbolic Name: IPRIPLOG_PACKET_TOO_SMALL
Message: IPRIPv2 received a packet which was smaller than the minimum size allowed for IPRIP packets. The packet has been discarded. It was received on the local interface with IP address: %1, and it came from the neighboring router with IP address : %2.

Resolve

Configure the router to receive packets from the neighboring router or configure authentication settings

To perform this procedure, you must have membership in Administrators, or you must have been delegated the appropriate authority.

Configure a unicast neighbor

To configure a unicast neighbor:

  1. Open Routing and Remote Access. Click Start, click Run, type rrasmgmt.msc, and then press ENTER.
  2. In the console tree, expand IPv4, and then click RIP.
  3. In the details pane, right-click the interface on which you want to set unicast neighbors, and then click Properties.
  4. On the Neighbors tab, check the settings.

Configure authentication settings

To configure authentication settings:

  1. Open Routing and Remote Access. Click Start, click Run, type rrasmgmt.msc, and then press ENTER.
  2. In the console tree, expand IPv4, and then click RIP.
  3. In the details pane, right-click the interface on which you want to set unicast neighbors, and then click Properties.
  4. On the General tab, select the Activate authentication check box, and in Password, type a password.

Verify

To perform this procedure, you must have membership in Administrators, or you must have been delegated the appropriate authority.

To verify that the RTM route has been added:

  • Stop and restart the Routing and Remote Access service.
    1. Click Start, click Run, type rrasmgmt.msc, and then press ENTER.
    2. Open Routing and Remote Access.
    3. In the console tree, click Server Status.
    4. In the details pane, right-click a server name, point to All Tasks, and click Restart.
  • View the routing table. In the Routing and Remote Access snap-in, expand IPv4 or IPv6, right-click Static Routes, and then click Show IP Routing Table.
  • Verify that the route has been added.

Related Management Information

RRAS RIP Packet Discarding

Routing and Remote Access Service Infrastructure

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