RE: CCIE-SP TOPIC - <ISSUE RESOLVED> trouble establishing

When doing Interworking, never forget this (from Layer 2 VPN Architectures
Book):

Following are the two types of Layer 2 VPN IW:

7 Bridged (Ethernet) Internetworking Ethernet frames that are
extracted from the attachment circuit are sent over the pseudowire. In the
case of 802.1q, the VLAN tag is removed. The pseudowire functions in
Ethernet (VC type 0x0005) like-to-like mode, and the IW function at the NSP
performs the required adaptation based on the attachment circuit technology.
Non-Ethernet frames are dropped.

7 Routed (IP) Internetworking IP packets that are extracted from the
attachment circuit are sent over the pseudowire. The pseudowire functions in
IP Layer 2 Transport (VC type 0x000B) like-to-like mode, and the IW function
(NSP) performs the required adaptation based on the attachment circuit
technology. Non-IPv4 packets are dropped.

Regards,

Antonio Soares, CCIE #18473 (R&S/SP)
 <mailto:amsoares_at_netcabo.pt> amsoares_at_netcabo.pt

 <http://www.ccie18473.net> http://www.ccie18473.net

From: Ben Jules [mailto:bjules05_at_gmail.com]
Sent: quinta-feira, 3 de Margo de 2011 16:01
To: Antonio Soares
Cc: Rich Collins; ccielab_at_groupstudy.com
Subject: Re: CCIE-SP TOPIC - <ISSUE RESOLVED> trouble establishing neighbor
relationship using ISIS over Frame-relay across L2TPv3

THANKS Antonio!!

ISSUE RESOLVED!!

As always thanks for the help. You are as always a great resource.

Ben

On Thu, Mar 3, 2011 at 10:48 AM, Antonio Soares <amsoares_at_netcabo.pt> wrote:

Why are you doing interworking ? You have frame-relay in both sides, right ?
Remove it and it should work.

Regards,

Antonio Soares, CCIE #18473 (R&S/SP)
amsoares_at_netcabo.pt
http://www.ccie18473.net

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of Ben
Jules
Sent: quinta-feira, 3 de Margo de 2011 14:27
To: Rich Collins; ccielab_at_groupstudy.com
Subject: Re: CCIE-SP TOPIC - trouble establishing neighbor relationship
using ISIS over Frame-relay across L2TPv3

Just lab'ed it up again and still same result. I'm not sure what I'm
missing. I think I was alittle more careful this time on what I am copying
and pasting. Please take a look again and let me know what does anyone
think.

Ben

R1 <------------->R2 <-----------------> R3 <--------------------->R4
ISIS OSPF/L2TPV3 ISIS

R1#sri s1/0
Building configuration...

Current configuration : 296 bytes
!
interface Serial1/0
 ip address 10.0.14.1 255.255.255.0
 ip router isis A
 encapsulation frame-relay
 ip ospf network point-to-point
 serial restart-delay 0
 frame-relay map clns 104 broadcast
 frame-relay map ip 10.0.14.4 104 broadcast
 clns router isis A
 isis circuit-type level-2-only
end
*R1#ping 10.0.14.4

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.14.4, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 16/45/72 ms*
R1#

router isis A
 net 49.0001.0000.0000.0001.00
 is-type level-2-only
 metric-style wide
 log-adjacency-changes
!
R1#debug isis adj
IS-IS Adjacency related packets debugging is on
R1#
00:42:33: ISIS-Adj: Sending L2 LAN IIH on Serial1/0, length 1500
R1#
00:42:42: ISIS-Adj: Sending L2 LAN IIH on Serial1/0, length 1500
R1#
00:42:51: ISIS-Adj: Sending L2 LAN IIH on Serial1/0, length 1500
R1#

-----------------------------------------------------
R4

R4#sri s1/0
Building configuration...

Current configuration : 296 bytes
!
interface Serial1/0
 ip address 10.0.14.4 255.255.255.0
 ip router isis A
 encapsulation frame-relay
 ip ospf network point-to-point
 serial restart-delay 0
 frame-relay map clns 401 broadcast
 frame-relay map ip 10.0.14.1 401 broadcast
 clns router isis A
 isis circuit-type level-2-only
end

*R4#ping 10.0.14.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.14.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 20/61/168 ms*

router isis A
 net 49.0004.0000.0000.0004.00
 is-type level-2-only
 metric-style wide
 log-adjacency-changes

R4#debug isis adj
IS-IS Adjacency related packets debugging is on
R4#
00:42:27: ISIS-Adj (A): Sending L2 LAN IIH on Serial1/0, length 1500
R4#
00:42:35: ISIS-Adj (A): Sending L2 LAN IIH on Serial1/0, length 1500
R4#
00:42:45: ISIS-Adj (A): Sending L2 LAN IIH on Serial1/0, length 1500
-------------------------------------------
R2 config

pseudowire-class fr-fr
 encapsulation l2tpv3
 interworking ip
 ip local interface Loopback0
!
interface Serial1/0
 no ip address
 encapsulation frame-relay

R2#sri f2/0
interface FastEthernet2/0
 ip address 23.23.23.2 255.255.255.0

R2#srb ospf
router ospf 23
 router-id 2.2.2.2
 log-adjacency-changes
 network 2.2.2.2 0.0.0.0 area 0
 network 23.23.23.2 0.0.0.0 area 0

connect ppp-fr Serial1/0 104 l2transport
 xconnect 3.3.3.3 100 pw-class fr-fr

sh ip route
    2.0.0.0/24 is subnetted, 1 subnets
C 2.2.2.0 is directly connected, Loopback0
    3.0.0.0/32 is subnetted, 1 subnets
O 3.3.3.3 [110/2] via 23.23.23.3, 00:36:22, FastEthernet2/0
    23.0.0.0/24 is subnetted, 1 subnets
C 23.23.23.0 is directly connected, FastEthernet2/0

R2#sh l2tun
 Tunnel and Session Information Total tunnels 1 sessions 1

LocID RemID Remote Name State Remote Address Port Sessions L2TPclass
19617 34793 R3 est 3.3.3.3 0 1

LocID RemID TunID Username, Intf/
State
                                Vcid, Circuit
50373 26997 19617 100, Se1/0:104
est
------------------------------------------------------------------
R3
R3#sri s1/0
pseudowire-class fr-fr
 encapsulation l2tpv3
 interworking ip
 ip local interface Loopback0

!
interface Serial1/0
 no ip address
 encapsulation frame-relay
!
interface FastEthernet2/0
 ip address 23.23.23.3 255.255.255.0
!
router ospf 23
 router-id 3.3.3.3
 log-adjacency-changes
 network 3.3.3.3 0.0.0.0 area 0
 network 23.23.23.3 0.0.0.0 area 0
!
connect ppp-fr Serial1/0 401 l2transport
 xconnect 2.2.2.2 100 pw-class fr-fr
!
R3#sh l2tun
 Tunnel and Session Information Total tunnels 1 sessions 1

LocID RemID Remote Name State Remote Address Port Sessions L2TPclass
34793 19617 R2 est 2.2.2.2 0 1
l2tp_default_cl

LocID RemID TunID Username, Intf/
State
                                Vcid, Circuit
26997 50373 34793 100, Se1/0:401
est

-----------------------------------------

On Thu, Mar 3, 2011 at 8:19 AM, Ben Jules <bjules05_at_gmail.com> wrote:

> Ummm i'm not sure how I copied it in the original email but looks like I
> pasted the R4 config twice in the email. In my lab the IP configs are
> correct. I can ping from one side to the other and I can even establish
OSPF
> across the two CE sites but not ISIS. Thanks for for everyone who looked
at
> this for me. I am hoping that maybe I could have someone lab this up and
> look at it for me. I have been successfully been able to establish
neighbor
> relationship with ISIS over Frame really but just not over L2TPv3 and am
not
> sure why. I will lab this up one more time and send full configs if you
> like.
>
> Ben
>
>
> On Wed, Mar 2, 2011 at 9:37 PM, Rich Collins <nilsi2002_at_gmail.com> wrote:
>
>> Looks like your problem is here on R1 --- shouldn't the ip address be
>> 10.0.14.1 and the mapping to 10.0.14.4 ?
>>
>>
>> > R1
>> >
>> > iinterface Serial1/0
>> > ip address 10.0.14.4 255.255.255.0
>> > frame-relay map ip 10.0.14.1 401 broadcast
>>
>>
>> > ----------------------
>> > R4
>> >
>> > interface Serial1/0
>> > ip address 10.0.14.4 255.255.255.0
>> > frame-relay map ip 10.0.14.1 401 broadcast
>>
>>
>> -Rich
>>
>> On Tue, Mar 1, 2011 at 3:51 PM, Ben Jules <bjules05_at_gmail.com> wrote:
>> > Hello Experts,
>> >
>> > I have tried the two following scenarios and have unsuccessfully been
>> able
>> > to complete my tasks of configuring ISIS between two Frame-relay
>> > interfaces.using L2TPv3
>> > This lab first consist of 4 routers. Two PE and two CE routers. L2TPv3
>> > (routed) is configured between the two PE routers and normal
Frame-relay
>> > between the two CE routers. There were no subinterfaces used in this
>> lab.
>> >
>> >
>> > *Lab 1 did not work.* Lab 1 consist of R1(frame-relay) to
>> R4(frame-relay)
>> > with R2and R3 running L2TPv3 in between L2 Tunnel is up and working but
>> ISIS
>> > will not establish neighbor relationship. I verfied the same
>> configuration
>> > without L2TPv3 in lab 1 and it work fine. Any suggestions.
>> > *
>> > LAB 1:
>> > **
>> > 10.0.14.1* 2.2.2.2
>> > 3.3.3.3 *10.0.14.4*
>> > * ISIS * *OSPF/L2TPv3 *
>> > * ISIS*
>> > * R1* <------------FR-SW----------> *R2* <--------------------->
>> > *R3*<------------<FR-SW>----------------->
>> > *R4*
>> > * CE* Frame switch/GNS3 *PE* * PE *
>> > Frame switch/GNS3 *CE*
>> > and without FR-SW
>> > and without FR-SW
>> > dlci 104
>> > dlci 401
>> >
>> > *Ping is successful from R1 to R4*. Frame relay map statements for both
>> CLNS
>> > and IP working as expected of which i verified with Debugs. If any one
>> has
>> > time or might know what's wrong give it a try and let me know. Please
>> > request any additional information that you may need.
>> > I have used the following cisco links for reference
>> >
>> >
>>
http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a008009445a
<http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a008009445
a%0A.shtml>
.shtml
>> >
>>
http://www.cisco.com/en/US/docs/ios/mpls/configuration/guide/mp_l2vpn_intrnt
<http://www.cisco.com/en/US/docs/ios/mpls/configuration/guide/mp_l2vpn_intrn
t%0Awkg_ps6441_TSD_Products_Configuration_Guide_Chapter.html#wp1055221>
wkg_ps6441_TSD_Products_Configuration_Guide_Chapter.html#wp1055221
>> >
>> > R1
>> > *clns routing*
>> >
>> > iinterface Serial1/0
>> > ip address 10.0.14.4 255.255.255.0
>> > ip router isis B
>> > encapsulation frame-relay
>> > serial restart-delay 0
>> > * frame-relay map clns 401 broadcast*
>> > frame-relay map ip 10.0.14.1 401 broadcast
>> > * clns router isis B*
>> > isis circuit-type level-2-only
>> >
>> >
>> > router isis B
>> > net 49.0014.0000.0000.0001.00
>> > is-type level-2-only
>> > metric-style wide
>> > log-adjacency-changes
>> >
>> > R1#ping 10.0.14.4
>> > Type escape sequence to abort.
>> > Sending 5, 100-byte ICMP Echos to 10.0.14.4, timeout is 2 seconds:
>> > !!!!!
>> > Success rate is 100 percent (5/5), round-trip min/avg/max = 156/173/192
>> ms
>> >
>> > R1# debug isis adj
>> > 03:43:02: ISIS-Adj: Sending L2 LAN IIH on Serial1/0, length 1500
>> > 03:43:11: ISIS-Adj: Sending L2 LAN IIH on Serial1/0, length 1500
>> > 03:43:19: ISIS-Adj: Sending L2 LAN IIH on Serial1/0, length 1500
>> > 03:43:29: ISIS-Adj: Sending L2 LAN IIH on Serial1/0, length 1500
>> > 03:43:37: ISIS-Adj: Sending L2 LAN IIH on Serial1/0, length 1500
>> >
>> >
>> > R1#sh isis nei
>> > System Id Type Interface IP Address State Holdtime Circuit Id
>> >
>> >
>> > ----------------------
>> > R4
>> >
>> > *clns routing*
>> > router isis B
>> > net 49.0014.0000.0000.0004.00
>> > is-type level-2-only
>> > metric-style wide
>> > log-adjacency-changes
>> >
>> > interface Serial1/0
>> > ip address 10.0.14.4 255.255.255.0
>> > ip router isis B
>> > encapsulation frame-relay
>> > serial restart-delay 0
>> > * frame-relay map clns 401 broadcast*
>> > frame-relay map ip 10.0.14.1 401 broadcast
>> > *clns router isis B*
>> > isis circuit-type level-2-only
>> >
>> > !
>> > R4#ping 10.0.14.1
>> > Type escape sequence to abort.
>> > Sending 5, 100-byte ICMP Echos to 10.0.14.1, timeout is 2 seconds:
>> > !!!!!
>> > Success rate is 100 percent (5/5), round-trip min/avg/max = 16/31/76 ms
>> >
>> > R4# debug isis adj
>> > 03:29:18: ISIS-Adj: Run level-2 DR election for Serial1/0
>> > 03:29:18: ISIS-Adj: No L2 adjacencies found for Serial1/0
>> > 03:29:25: ISIS-Adj: Sending L2 LAN IIH on Serial1/0, length 1500
>> > 03:29:34: ISIS-Adj: Sending L2 LAN IIH on Serial1/0, length 1500
>> > 03:29:42: ISIS-Adj: Sending L2 LAN IIH on Serial1/0, length 1500
>> > 03:29:50: ISIS-Adj: Sending L2 LAN IIH on Serial1/0, length 1500
>> >
>> >
>> >
>> >
>> > *LAB 2 worked with success.*
>> >
>> >
>> > DCE
>> >
>> > *R1(s1/0)* <-->FR Switch<-->(*s1/0) R2*
>> >
>> > * ISIS* * ISIS*
>> > ^ ^
>> > | ----------------FR SW--------------|
>> >
>> > R1#sh isis nei
>> >
>> > System Id Type Interface IP Address State Holdtime Circuit Id
>> > R2 L2 Se1/0 10.0.12.2 UP 9 R2.01
>> >
>> > R1#sh run inter s1/0
>> > Building configuration...
>> >
>> > Current configuration : 244 bytes
>> > !
>> > interface Serial1/0
>> > ip address 10.0.12.1 255.255.255.0
>> > ip router isis A
>> > encapsulation frame-relay
>> > serial restart-delay 0
>> > * frame-relay map clns 102 broadcast*
>> > frame-relay map ip 10.0.12.2 102 broadcast
>> > isis circuit-type level-2-only
>> >
>> > router isis A
>> > net 49.0012.0000.0000.0001.00
>> > metric-style wide
>> > log-adjacency-changes
>> >
>> >
>> > 00:11:44: ISIS-Adj: Sending L2 LAN IIH on Serial1/0, length 1500
>> > R1#
>> > 00:11:46: ISIS-Adj: Rec L2 IIH from DLCI 102 (Serial1/0), cir type L2,
>> cir
>> > id 0000.0000.0002.01, length 1500
>> > R1#
>> > 00:11:48: ISIS-Adj: Rec L2 IIH from DLCI 102 (Serial1/0), cir type L2,
>> cir
>> > id 0000.0000.0002.01, length 1500
>> >
>> > R2
>> > interface Serial1/0
>> > ip address 10.0.12.2 255.255.255.0
>> > ip router isis A
>> > encapsulation frame-relay
>> > serial restart-delay 0
>> > * frame-relay map clns 201 broadcast*
>> > frame-relay map ip 10.0.12.1 201 broadcast
>> > isis circuit-type level-2-only
>> >
>> > R2#sh isis nei
>> >
>> > System Id Type Interface IP Address State Holdtime Circuit Id
>> > R1 L2 Se1/0 10.0.12.1 UP 29 R2.01
>> >
>> > router isis A
>> > net 49.0012.0000.0000.0002.00
>> > metric-style wide
>> > log-adjacency-changes
>> >
>> > *Thanks,
>> >
>> > Ben*
>> >
>> >
>> > Blogs and organic groups at http://www.ccie.net
>> >
>> > _______________________________________________________________________
>> > Subscription information may be found at:
>> > http://www.groupstudy.com/list/CCIELab.html

Blogs and organic groups at http://www.ccie.net
Received on Thu Mar 03 2011 - 16:07:24 ART