From: David Luu (wicked01@xxxxxxxxxxxxx)
Date: Wed Jun 05 2002 - 20:01:47 GMT-3
technically cisco and caslow are both right...
eigrp needs an extra syntax for split horizon...
igrp and rip use "ip split horizon", eigrp uses "ip split-horizon eigrp as#"
At 03:25 PM 6/5/2002 -0700, Danny.Wang@alderwoods.com wrote:
>Thank you all for your responses and advices.
>
>Yeah, it works fine after adding 'broadcast' keyword in r5 & r6.
>
>(BTW, the neighbor command won't work in this scenario, after entering the
>neigh in r5, r6, the neigh disappeared from "sh ip eig nei")
>
>One more thing i'd like to clarify is 'ip split-horizon' of 'eigrp' in
>nbma.
>
>Based on Cisco IOS 12.x Solutions for network protocols (Vol 1: IP)
>
>ip split-horizon in nbma only applies to rip & igrp, not to 'eigrp'.
>
>Caslow book states that all the routing protocol, rip, igrp and eigrp apply
>the rule of split-horizon.
>and split-horizon is disabled by default for ip on frame-relay physical
>interfaces, and enabled on
>subinterfaces.
>
>So my questions are:
>
>1. Which statement is more accurate, Cisco or Caslow?
>2. In this scenario. Does the split-horizon rules apply to the hub physical
>interface s0/0 & subinterface s0/0.256 in r2?
> if the answer is yes, which one will take the precedence?
>3. If i explicitly disable the split-horizon on the interface s0/0, Does it
>apply to both subinterface s0/0.24 & s0/0.256 even they're running the two
>different routing protocol, in this case, one is igrp, another is eigrp.
>
>
>
>
>
>
>
>
>
>
> <p729@cox.net>
>
> To:
> Danny.Wang@alderwoods.com, ccielab@groupstudy.com
> 06/04/2002
> 10:35 cc:
> PM Subject: Re: eigrp
> problem via nbma
>
>
>
>
>
>
>
>
>Try adding the 'broadcast' keyword to your 'frame-relay map' statements in
>r5 and r6.
>
>Or, as an interesting experiment, try changing the EIGRP routing updates to
>unicast by using the 'neighbor' command under the EIGRP routing process in
>r5 and r6 (instead of the 'broadcast' keyword on the map statements).
>
>The reason it seems to be "working in one direction" is you do have
>broadcasts enabled on your frame maps in r2. The multicasts make it out to
>r5 and r6 and the reliable part of EIGRP _unicasts_ the acknowledgements
>back to r2, so the 'broadcast' keyword isn't needed for that part to work.
>
>Regards,
>
>Mas Kato
>https://ecardfile.com/id/mkato
>============================================================
>From: Danny.Wang@alderwoods.com
>Date: 2002/06/04 Tue PM 09:12:51 EDT
>To: ccielab@groupstudy.com
>Subject: eigrp problem via nbma
>
>r1 --- r2 (ethernet)
>r2 --- r4 (frame-relay)
>r2 --- r5 (FR)
>r2 --- r6 (FR)
>r5 --- r6 (ethernet)
>
>r1- - - r2-- -- -- r4
> / \
> / \
> r5 - - - r6
>
>eigrp on r1, r2, r5, r6.
>igrp on r2, r4.
>
>igrp works just fine, but i can't make the eigrp working.
>
> From r5, r6, the neighbor estabalished when "sh ip eig nei"
>
>r5#sh ip eigrp nei
>IP-EIGRP neighbors for process 1
>H Address Interface Hold Uptime SRTT RTO Q Seq
>Type
> (sec) (ms) Cnt Num
>1 150.50.100.2 Se0/0 13 00:01:11 1 5000 1 0
>0 150.50.7.6 Et0/0 11 00:35:28 8 200 0 8
>
>r6>sh ip eig nei
>IP-EIGRP neighbors for process 1
>H Address Interface Hold Uptime SRTT RTO Q Seq
> (sec) (ms) Cnt Num
>0 150.50.100.2 Se0 14 00:00:38 0 5000 1 0
>1 150.50.7.5 Et0 12 00:36:21 20 200 0 18
>
>also from r5, r6, I can ping r2
>
> r6>ping 150.50.100.2
>
>Type escape sequence to abort.
>Sending 5, 100-byte ICMP Echos to 150.50.100.2, timeout is 2 seconds:
>!!!!!
>Success rate is 100 percent (5/5), round-trip min/avg/max = 20/20/20 ms
>
>r5#ping 150.50.100.2
>
>Type escape sequence to abort.
>Sending 5, 100-byte ICMP Echos to 150.50.100.2, timeout is 2 seconds:
>!!!!!
>Success rate is 100 percent (5/5), round-trip min/avg/max = 16/19/20 ms
>
>I could ping r5, r6, from r2
>
>r2>ping 150.50.100.5
>
>Type escape sequence to abort.
>Sending 5, 100-byte ICMP Echos to 150.50.100.5, timeout is 2 seconds:
>!!!!!
>Success rate is 100 percent (5/5), round-trip min/avg/max = 16/19/20 ms
>r2>ping 150.50.100.6
>
>Type escape sequence to abort.
>Sending 5, 100-byte ICMP Echos to 150.50.100.6, timeout is 2 seconds:
>!!!!!
>Success rate is 100 percent (5/5), round-trip min/avg/max = 20/20/24 ms
>
>
>but, when i " sh ip eigr nei" @ r2
>
>IP-EIGRP neighbors for process 1
>H Address Interface Hold Uptime SRTT RTO Q Seq
>Type
> (sec) (ms) Cnt Num
>0 150.50.17.1 Et0/0 12 00:22:14 125 750 0 41
>
>Why?
>
>
>sh run:
>
>r2#r
>
>Current configuration : 1715 bytes
>!
>version 12.1
>no service single-slot-reload-enable
>service timestamps debug uptime
>service timestamps log uptime
>no service password-encryption
>!
>hostname r2
>!
>!
>!
>!
>!
>!
>ip subnet-zero
>no ip domain-lookup
>!
>ip audit notify log
>ip audit po max-events 100
>!
>!
>!
>!
>!
>!
>!
>interface Loopback0
> ip address 200.0.0.2 255.255.255.255
>!
>interface Ethernet0/0
> ip address 150.50.17.2 255.255.255.0
>!
>interface Serial0/0
> no ip address
> encapsulation frame-relay
> no ip mroute-cache
> frame-relay class cir_value
> no frame-relay inverse-arp
> frame-relay lmi-type cisco
>!
>interface Serial0/0.24 point-to-point
> ip address 150.50.24.2 255.255.255.0
> no arp frame-relay
> frame-relay interface-dlci 104
>!
>interface Serial0/0.256 multipoint
> ip address 150.50.100.2 255.255.255.224
> frame-relay map ip 150.50.100.5 105 broadcast
> frame-relay map ip 150.50.100.6 106 broadcast
>!
>interface Ethernet0/1
> no ip address
> shutdown
>!
>router eigrp 1
> redistribute igrp 2
> network 150.50.17.0 0.0.0.255
> network 150.50.100.0 0.0.0.31
> network 200.0.0.2 0.0.0.0
> auto-summary
> no eigrp log-neighbor-changes
>!
>router igrp 2
> passive-interface Ethernet0/0
> passive-interface Serial0/0.256
> network 150.50.0.0
>!
>ip classless
>no ip http server
>!
>!
>map-class frame-relay cir_value
> frame-relay cir in 56000
> frame-relay cir out 56000
> no frame-relay adaptive-shaping
>!
>!
>alias exec r show run
>alias exec c conf t
>alias exec i show ip route
>alias exec b show ip bgp
>alias exec o show ip ospf
>alias exec oi show ip ospf int
>alias exec od show ip ospf int data
>alias exec bn show ip bgp neigh
>alias exec bri show ip int brie
>alias exec fp show frame-relay pvc
>alias exec fm show frame-relay map
>!
>line con 0
>line aux 0
>line vty 0 4
> login
>!
>end
>
>
>
>r4#r
>Building configuration...
>
>Current configuration:
>!
>version 12.0
>service timestamps debug uptime
>service timestamps log uptime
>no service password-encryption
>!
>hostname r4
>!
>!
>ip subnet-zero
>no ip domain-lookup
>!
>!
>!
>interface Loopback0
> ip address 200.0.0.4 255.255.255.255
> no ip directed-broadcast
>!
>interface Ethernet0
> ip address 10.1.1.4 255.255.255.0
> no ip directed-broadcast
> no keepalive
>!
>interface Serial0
> ip address 150.50.24.4 255.255.255.0
> no ip directed-broadcast
> encapsulation frame-relay
> ip split-horizon
> no ip mroute-cache
> logging event subif-link-status
> logging event dlci-status-change
> frame-relay map ip 150.50.24.2 401 broadcast
> no frame-relay inverse-arp
> frame-relay lmi-type cisco
>!
>interface Serial1
> no ip address
> no ip directed-broadcast
> shutdown
>!
>router igrp 2
> redistribute connected
> passive-interface Ethernet0
> network 150.50.0.0
>!
>ip classless
>!
>alias exec bri show ip int brie
>alias exec f show frame-relay pvc
>alias exec r show run
>alias exec c conf t
>alias exec i show ip route
>alias exec b show ip bgp
>alias exec o show ip ospf
>alias exec oi show ip ospf int
>alias exec bn show ip bgp neigh
>alias exec fp show frame-relay pvc
>alias exec fm show frame-relay map
>!
>line con 0
> transport input none
>line aux 0
>line vty 0 4
> login
>!
>end
>
>r5#r
>Building configuration...
>
>Current configuration:
>!
>version 12.1
>service timestamps debug uptime
>service timestamps log uptime
>no service password-encryption
>!
>hostname r5
>!
>!
>ip subnet-zero
>no ip domain-lookup
>!
>lane client flush
>cns event-service server
>!
>!
>!
>!
>!
>!
>!
>!
>interface Loopback0
> ip address 200.0.0.5 255.255.255.255
>!
>interface Ethernet0/0
> ip address 150.50.7.5 255.255.255.128
>!
>interface Serial0/0
> ip address 150.50.100.5 255.255.255.224
> encapsulation frame-relay
> no ip mroute-cache
> frame-relay map ip 150.50.100.2 501
> frame-relay map ip 150.50.100.6 501
> no frame-relay inverse-arp
> frame-relay lmi-type cisco
> frame-relay qos-autosense
>!
>interface Ethernet0/1
> no ip address
> shutdown
>!
>router eigrp 1
> redistribute connected
> network 150.50.0.0
> no auto-summary
>!
>ip classless
>no ip http server
>!
>!
>alias exec bri show ip int brie
>alias exec f show frame-relay pvc
>alias exec r show run
>alias exec c conf t
>alias exec i show ip route
>alias exec b show ip bgp
>alias exec o show ip ospf
>alias exec oi show ip ospf int
>alias exec bn show ip bgp neigh
>alias exec fp show frame-relay pvc
>alias exec fm show frame-relay map
>!
>line con 0
> transport input none
>line aux 0
>line vty 0 4
> login
>!
>end
>
>r6#r
>Building configuration...
>
>Current configuration:
>!
>version 12.0
>service timestamps debug uptime
>service timestamps log uptime
>no service password-encryption
>!
>hostname r6
>!
>!
>ip subnet-zero
>no ip domain-lookup
>!
>!
>!
>interface Loopback0
> ip address 200.0.0.6 255.255.255.255
> no ip directed-broadcast
>!
>interface Ethernet0
> ip address 150.50.7.6 255.255.255.128
> no ip directed-broadcast
>!
>interface Serial0
> ip address 150.50.100.6 255.255.255.2
> no ip directed-broadcast
> encapsulation frame-relay
> ip split-horizon
> no ip mroute-cache
> logging event subif-link-status
> logging event dlci-status-change
> frame-relay map ip 150.50.100.2 601
> frame-relay map ip 150.50.100.5 601
> frame-relay lmi-type cisco
> frame-relay lmi-n391dte 255
> frame-relay lmi-n392dte 10
>!
>interface Serial1
> no ip address
> no ip directed-broadcast
> shutdown
>!
>router eigrp 1
> redistribute connected
> network 150.50.0.0
> no auto-summary
>!
>ip classless
>!
>alias exec bri show ip int brie
>alias exec f show frame-relay pvc
>alias exec r show run
>alias exec c conf t
>alias exec i show ip route
>alias exec b show ip bgp
>alias exec o show ip ospf
>alias exec oi show ip ospf int
>alias exec bn show ip bgp neigh
>alias exec fp show frame-relay pvc
>alias exec fm show frame-relay map
>!
>line con 0
> transport input none
>line aux 0
>line vty 0 4
> login
>!
>end
>
>r6#
This archive was generated by hypermail 2.1.4 : Tue Jul 02 2002 - 08:12:25 GMT-3