From: alsontra@hotmail.com
Date: Wed Feb 04 2004 - 03:59:33 GMT-3
Router2's config is posted below. The configs are straight forward. There
are no access-list, route-maps, etc. R2 simply runs EIGRP to provide the
underling connectivity for the tunnel between R5 and SW1.
As soon as I typed "tunnel mode ipip", I was able to ping the local
interface. There is one thing I neglected to mention. R2 is running IOS 11.2
and R5 and SW1 are running 12.2. Surly, thats not causing the problem? In an
event, the tunnel mode command seem to fix all problems. All devices are
ping-able and seem stable. (spent 2 1/2 hours working this problem along
side a multicast scenario and I know the CCO logical interface configuration
URL by heart.) :-)
R2_CONFIG
!
interface Loopback1
ip address 223.1.1.2 255.255.255.255
!
interface Ethernet0
ip address 150.1.1.2 255.255.255.0
ip pim sparse-dense-mode
ip igmp join-group 224.1.1.2
!
interface Serial0
ip address 141.1.1.2 255.255.255.0
ip pim nbma-mode
ip pim sparse-mode
encapsulation frame-relay
no arp frame-relay
no fair-queue
frame-relay map ip 141.1.1.5 131
frame-relay map ip 141.1.1.6 131 broadcast
no frame-relay inverse-arp
frame-relay lmi-type cisco
!
interface Serial1
no ip address
clockrate 64000
!
router eigrp 100
network 223.1.1.0
network 141.1.0.0
network 150.1.0.0
no auto-summary
!
ip classless
ip bgp-community new-format
!
----- Original Message -----
From: "Brian McGahan" <bmcgahan@internetworkexpert.com>
To: <alsontra@hotmail.com>; <ccielab@groupstudy.com>
Sent: Tuesday, February 03, 2004 8:36 PM
Subject: RE: IP GRE Tunnels
> What does R2 look like? Is it possible that R2 is blocking GRE?
>
>
> Brian McGahan, CCIE #8593
> bmcgahan@internetworkexpert.com
>
> Internetwork Expert, Inc.
> http://www.InternetworkExpert.com
> Toll Free: 877-224-8987
> Direct: 708-362-1418 (Outside the US and Canada)
>
>
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> > alsontra@hotmail.com
> > Sent: Tuesday, February 03, 2004 11:15 PM
> > To: ccielab@groupstudy.com
> > Subject: Re: IP GRE Tunnels
> >
> > ok. I typed the command "tunnel mode ipip" under both tunnel
> > configurations
> > and now everything works. I thought tunnels defaulted to GRE IP
> > transport???
> >
> > Alsontra
> >
> > ----- Original Message -----
> > From: <alsontra@hotmail.com>
> > To: <ccielab@groupstudy.com>
> > Sent: Tuesday, February 03, 2004 8:36 PM
> > Subject: IP GRE Tunnels
> >
> >
> > > Group,
> > > As always, I'm assuming that some major misconception is
> > keeping
> > me
> > > from figuring out a problem I'm having with a GRE tunnel
configuration.
> > The
> > > configuration is extremely simple, but I can't figure out why I am
> > unable
> > to
> > > ping the local tunnel interface on SW1.
> > >
> > >
> > >
> > > Topology
> > >
> > >
> > > R5---------R2------------SW1
> > > - -
> > > --------tunnel0---------
> > >
> > >
> > > On R5 I can ping the local and remote tunnel interface, but on SW1 I
can
> > only
> > > ping the remote tunnel interface. I've double checked the IGP and
> > everything
> > > looks ok. I can ping all interfaces from R5. However, for some reason
on
> > SW1 I
> > > can not ping the local tunnel interface. What have missed?
> > >
> > >
> > > R5_CONFIG_abbreviated
> > > __________________________________________
> > > #
> > > R5#sh run
> > > !
> > > ip subnet-zero
> > > ip tcp synwait-time 5
> > > no ip domain-lookup
> > > !
> > > ip multicast-routing
> > > ip dvmrp route-limit 20000
> > > !
> > > !
> > > interface Tunnel0
> > > ip address 10.1.2.5 255.255.255.0
> > > no ip directed-broadcast
> > > tunnel source Serial0/2
> > > tunnel destination 150.1.1.47
> > > !
> > > interface Serial0/2
> > > ip address 141.1.1.5 255.255.255.0
> > > ip directed-broadcast
> > > ip pim nbma-mode
> > > ip pim sparse-mode
> > > encapsulation frame-relay
> > > no ip split-horizon eigrp 100
> > > no fair-queue
> > > cdp enable
> > > frame-relay map ip 141.1.1.2 130 broadcast
> > > frame-relay map ip 141.1.1.6 120 broadcast
> > > frame-relay lmi-type cisco
> > > !
> > > router eigrp 100
> > > network 128.1.0.0
> > > network 141.1.0.0
> > > network 171.1.0.0
> > > network 223.1.1.0
> > > no auto-summary
> > > !
> > > ip classless
> > > no ip http server
> > > ip pim send-rp-announce Loopback1 scope 16
> > > ip pim send-rp-discovery Loopback1 scope 16
> > > !
> > > R5#
> > > R5#sh ip route
> > > Gateway of last resort is not set
> > >
> > > 1.0.0.0/32 is subnetted, 1 subnets
> > > C 1.1.1.5 is directly connected, Loopback0
> > > 223.1.1.0/32 is subnetted, 4 subnets
> > > D 223.1.1.6 [90/2297856] via 141.1.1.6, 02:21:25, Serial0/2
> > > C 223.1.1.5 is directly connected, Loopback1
> > > D 223.1.1.2 [90/2297856] via 141.1.1.2, 02:41:38, Serial0/2
> > > D 223.1.1.47 [90/2323456] via 141.1.1.2, 00:04:45, Serial0/2
> > > 191.1.0.0/24 is subnetted, 1 subnets
> > > C 191.1.1.0 is directly connected, Loopback2
> > > 141.1.0.0/24 is subnetted, 1 subnets
> > > C 141.1.1.0 is directly connected, Serial0/2
> > > 128.1.0.0/24 is subnetted, 1 subnets
> > > C 128.1.1.0 is directly connected, Ethernet0/1
> > > 10.0.0.0/24 is subnetted, 1 subnets
> > > C 10.1.2.0 is directly connected, Tunnel0
> > > 180.1.0.0/24 is subnetted, 1 subnets
> > > C 180.1.1.0 is directly connected, Ethernet0/0
> > > 150.1.0.0/24 is subnetted, 1 subnets
> > > D 150.1.1.0 [90/2195456] via 141.1.1.2, 02:41:42, Serial0/2
> > >
> > >
> > >
> > > R2_CONFIG(not really important)
> > >
> > > SW1_CONFIG_abbreviated
> > > __________________________________________
> > > hostname SW1
> > > !
> > > interface Loopback1
> > > ip address 223.1.1.47 255.255.255.255
> > > !
> > > interface Tunnel0
> > > ip address 10.1.2.47 255.255.255.0
> > > tunnel source Vlan13
> > > tunnel destination 141.1.1.5
> > > !
> > > interface Vlan13
> > > ip address 150.1.1.47 255.255.255.0
> > > ip pim sparse-dense-mode
> > > !
> > > router eigrp 100
> > > network 150.1.0.0
> > > network 223.1.1.0
> > > no auto-summary
> > > no eigrp log-neighbor-changes
> > > !
> > > SW1#sh ip route
> > >
> > > Gateway of last resort is not set
> > >
> > > 223.1.1.0/32 is subnetted, 4 subnets
> > > D 223.1.1.6 [90/2810112] via 150.1.1.2, 00:00:19, Vlan13
> > > D 223.1.1.5 [90/2298112] via 150.1.1.2, 00:00:19, Vlan13
> > > D 223.1.1.2 [90/130816] via 150.1.1.2, 00:00:19, Vlan13
> > > C 223.1.1.47 is directly connected, Loopback1
> > > 141.1.0.0/24 is subnetted, 1 subnets
> > > D 141.1.1.0 [90/2170112] via 150.1.1.2, 00:00:19, Vlan13
> > > 128.1.0.0/24 is subnetted, 1 subnets
> > > D 128.1.1.0 [90/2195712] via 150.1.1.2, 00:00:19, Vlan13
> > > 160.1.0.0/24 is subnetted, 1 subnets
> > > C 160.1.1.0 is directly connected, Vlan12
> > > 10.0.0.0/24 is subnetted, 1 subnets
> > > C 10.1.2.0 is directly connected, Tunnel0
> > > 150.1.0.0/24 is subnetted, 1 subnets
> > > C 150.1.1.0 is directly connected, Vlan13
> > >
> > >
> > >
> > > Thanks,
> > > Alsontra
> > >
> > >
This archive was generated by hypermail 2.1.4 : Fri Mar 05 2004 - 07:13:45 GMT-3