From: Wayne Lawson (wayne_lawson@xxxxxxxxxxxxxxx)
Date: Mon May 17 1999 - 17:31:38 GMT-3
John,
When you turn on Frame Relay encap for a physical interface (or use
Frame Relay
Map) that automatically disables inverse-arp. Your spokes have
inverse-arp disabled,
while your hub needs either inverse-arp or frame-relay map statements
to route. If you
haven't already purchased Andrew Bruce Caslow's CCIE Lab prep book
(Bridges,
Routers and Switches for CCIE's) I would suggest doing so - it's got
an excellent
chapter on Frame Relay.
Later - Wayne
At 03:21 PM 5/17/99 -0500, John Howell wrote:
I thought that I would change the subject since we have beat IPX to
death. Below is a setup for a multipoint Frame network. Why does
router R2 loose all OSPF routes when the PVC to R6 comes up? Why
does R3 and R6 maintain routes from OSPF?
R6 (hub)
interface Serial0
no ip address
encapsulation frame-relay
!
interface Serial0.1 multipoint
ip address 170.100.2.1 255.255.255.0
frame-relay interface-dlci 202
frame-relay interface-dlci 203
interface Ethernet0
ip address 170.100.70.1 255.255.255.0
router ospf 100
network 170.100.2.0 0.0.0.255 area 0
neighbor 170.100.2.3
neighbor 170.100.2.2
R2 (spoke)
interface Serial0
ip address 170.100.2.2 255.255.255.0
encapsulation frame-relay
frame-relay map ip 170.100.2.1 102 broadcast
interface Ethernet0
ip address 170.100.82.1 255.255.255.192
interface TokenRing0
ip address 170.100.81.1 255.255.255.0
router ospf 100
network 170.100.2.0 0.0.0.255 area 0
network 170.100.82.0 0.0.0.63 area 2
network 170.100.81.0 0.0.0.255 area 5
R3 (spoke)
interface Serial0
ip address 170.100.2.3 255.255.255.0
encapsulation frame-relay
frame-relay map ip 170.100.2.1 103 broadcast
interface Async1
ip address 170.100.90.1 255.255.255.248
encapsulation ppp
async default routing
async dynamic routing
async mode dedicated
interface Ethernet0
ip address 170.100.82.2 255.255.255.192
router ospf 100
network 170.100.2.0 0.0.0.255 area 0
network 170.100.82.0 0.0.0.63 area 2
network 170.100.90.0 0.0.0.7 area 3
area 3 virtual-link 170.100.101.1
Thanks,
John T. Howell
Cohesive Technology Solutions
Senior Consultant/Engineer
CCNP/CCDP, MCSE+I, MCNE
225-751-6100
225-751-6200 (fax)
Wayne Lawson
Cisco CCNA & CCDA, Bay CRS, MCSE, CBE, CNE
Network Systems Consultant
International Network Services
100 Galleria Officentre, Suite #220
Southfield, MI 48034
http://www.ins.com
Voice: (248) 213-0700
Alpha Pager: (800) 467-1467
Epage: mailto:page_wayne_lawson@ins.com
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