From: p729@xxxxxxx
Date: Wed Jun 05 2002 - 20:23:14 GMT-3
Please see inline
============================================================
From: Danny.Wang@alderwoods.com
Date: 2002/06/05 Wed PM 06:25:31 EDT
To: <p729@cox.net>,
mize@netbuddy.org,
Josh.Morris@getronics.com
CC: ccielab@groupstudy.com
Subject: Re: eigrp problem via nbma
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?
>>I would say Caslow. All routing protocols with distance-vector properties imp
lement a split-horizon update knob.
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?
>>I don't know if the split-horizon attribute is inherited by subinterfaces, bu
t whatever is explicitly set at the subinterface level will take 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.
>>Same as above...
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