280
C
HAPTER
12: I
NTERNET
P
ROTOCOL
(IP)
Layer 2
Switching
Modules
✓
Multilayer
Switching
Modules
ip rip poisonReverse
Enables or disables RIP Poison Reverse mode on a Multilayer Switching
Module.
Valid Minimum Abbreviation
ip ri poi
Important Considerations
■
Your module always implements
Split Horizon
, a scheme that aims to
avoid the problems that are associated with reverse-route updates
(that is, the updates that are sent to a neighboring router that include
the routes that are learned from that router). The scheme omits the
routes that are learned from one neighbor in the updates that are sent
to that neighbor (the reverse routes). Poison reverse works with Split
Horizon as follows:
■
When you enable
Poison Reverse
for use with the Split Horizon
scheme (the default), the module advertises reverse routes in
updates, but sets the metrics to 16 (infinity). Setting the metric to
infinity breaks the loop immediately when two routers have routes
that point to each other.
■
When you disable Poison Reverse for the Split Horizon scheme,
reverse routes are simply not advertised.
Options
Prompt
Description
Possible Values
[Default]
IP interfaces
Index number of the interfaces
for which you want to set the
poison reverse mode
■
One or more
selectable
interface indexes
■
all
■
? (for a list of
selectable
interface
indexes)
Previous
entry, if
applicable
Poison Reverse
mode
Whether you want to
implement poison reverse for
the selected interface
■
disabled
■
enabled
Current
value
Summary of Contents for 4007
Page 1: ...http www 3com com Switch 4007 Command Reference Guide Part No 10013693 Published May 2000...
Page 14: ......
Page 22: ...22 ABOUT THIS GUIDE...
Page 34: ...34 CHAPTER 1 ADMINISTRATION OVERVIEW...
Page 78: ...78 CHAPTER 4 SIMPLE NETWORK MANAGEMENT PROTOCOL SNMP...
Page 100: ...100 CHAPTER 5 ETHERNET PORTS...
Page 174: ...174 CHAPTER 9 RESILIENT LINKS...
Page 322: ...322 CHAPTER 13 VIRTUAL ROUTER REDUNDANCY VRRP...
Page 476: ...476 CHAPTER 16 INTERNET PACKET EXCHANGE IPX...
Page 552: ...552 CHAPTER 18 QUALITY OF SERVICE QOS AND RESOURCE RESERVATION PROTOCOL RSVP...
Page 566: ...566 APPENDIX A TECHNICAL SUPPORT...
