Re: ISIS over FR-FR L2VPN

Hi Scott and Haroon

No luck even after changing the MTU size to 1600. I have tried to disable
cnsp interval and hello padding but still not luck. I am not getting any
option on Serial interface to set the network type whereas I can set the
same on ethernet.

CE1#sh clns int s1/0
Serial1/0 is up, line protocol is up
  Checksums enabled, MTU 1600, Encapsulation FRAME-RELAY
  ERPDUs enabled, min. interval 10 msec.
  RDPDUs enabled, min. interval 100 msec., Addr Mask enabled
  Congestion Experienced bit set at 4 packets
  CLNS fast switching disabled
  CLNS SSE switching disabled
  DEC compatibility mode OFF for this interface
  Next ESH/ISH in 52 seconds
  Routing Protocol: IS-IS
    Circuit Type: level-1-2
    Interface number 0x0, local circuit ID 0x1
    Level-2 Metric: 10, Priority: 64, Circuit ID: CE1.01
    DR ID: 0000.0000.0000.00
    Level-2 IPv6 Metric: 10
    Number of active level-2 adjacencies: 0
    Next IS-IS LAN Level-2 Hello in 191 milliseconds
    No hello padding

CE2#sh clns int s1/0
Serial1/0 is up, line protocol is up
  Checksums enabled, MTU 1600, Encapsulation FRAME-RELAY
  ERPDUs enabled, min. interval 10 msec.
  RDPDUs enabled, min. interval 100 msec., Addr Mask enabled
  Congestion Experienced bit set at 4 packets
  CLNS fast switching enabled
  CLNS SSE switching disabled
  DEC compatibility mode OFF for this interface
  Next ESH/ISH in 22 seconds
  Routing Protocol: IS-IS
    Circuit Type: level-1-2
    Interface number 0x0, local circuit ID 0x1
    Level-2 Metric: 10, Priority: 64, Circuit ID: CE2.01
    DR ID: 0000.0000.0000.00
    Level-2 IPv6 Metric: 10
    Number of active level-2 adjacencies: 0
    Next IS-IS LAN Level-2 Hello in 9 seconds
    No hello padding
R4#

CE1#sh clns neighbors

CE1#

CE1(config)#int s1/0
CE1(config-if)#isis net?
% Unrecognized command

CE1(config)#in fa0/1
CE1(config-if)#isis network ?
  point-to-point Specify ISIS point-to-point network

-Andrew

On Sun, Nov 28, 2010 at 1:03 AM, Tyson Scott <tscott_at_ipexpert.com> wrote:

> When IS-IS first forms a neighbor relationship it PAD's the first packet
> with the size of the full MTU. I don't see anything you have done to
> change
> the MTU of the path but what happens when you add two MPLS headers one for
> MPLS + one for L2VPN, is MTU still 1500? Try to think of the different
> things you can do to affect MTU on the path, to either increase it or
> decrease at the edge.
>
> Regards,
>
> Tyson Scott - CCIE #13513 R&S, Security, and SP
> Managing Partner / Sr. Instructor - IPexpert, Inc.
> Mailto: tscott_at_ipexpert.com
>
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> Andrew K Yule
> Sent: Saturday, November 27, 2010 2:25 PM
> To: ccielab_at_groupstudy.com
> Subject: ISIS over FR-FR L2VPN
>
> I have setup a FR to FR layer 2 VPN (l2tpv3).
>
> CE1----fr---PE1--------PE2----fr----CE2
>
> L2TP tunnel is showing up on both the PE routers. I am able to ping remote
> interface from both the CE routers as well. MPLS Neighborship is also
> getting established between CE1 and CE2. I have tired configuring OSPF and
> OSPF neighborship comes up with out any issue.
>
> But when I try to configure ISIS on CE1 and CE2 it's not working.
> neighborship is not coming up at all. pls find below the config of both the
> CE router. Am I missing something here for ISIS config ???? . There is not
> mismatch of interface type. I can't make out with anything in debug as well
>
> --------
> CE1
> ---------
> !
> clns routing
> !
> interface Serial1/0
> ip address 10.1.1.1 255.255.255.0
> ip router isis
> encapsulation frame-relay
> mpls ip
> serial restart-delay 0
> no arp frame-relay
> frame-relay map clns 101 broadcast
> frame-relay map ip 10.1.1.2 101 broadcast
> no frame-relay inverse-arp
> clns router isis
> no clns route-cache
> !
> router isis
> net 49.0001.0000.0000.0001.00
>
>
> --------
> CE2
> ---------
>
> clns routing
> !
> interface Serial1/0
> ip address 10.1.1.2 255.255.255.0
> ip router isis
> encapsulation frame-relay
> mpls ip
> serial restart-delay 0
> no arp frame-relay
> frame-relay map clns 201 broadcast
> frame-relay map ip 10.1.1.1 201 broadcast
> no frame-relay inverse-arp
> clns router isis
> no clns route-cache
> !
> router isis
> net 49.0001.0000.0000.0002.00
>
> CE1#sh clns int s1/0
> Serial1/0 is up, line protocol is up
> Checksums enabled, MTU 1500, Encapsulation FRAME-RELAY
> ERPDUs enabled, min. interval 10 msec.
> RDPDUs enabled, min. interval 100 msec., Addr Mask enabled
> Congestion Experienced bit set at 4 packets
> CLNS fast switching disabled
> CLNS SSE switching disabled
> DEC compatibility mode OFF for this interface
> Next ESH/ISH in 24 seconds
> Routing Protocol: IS-IS
> Circuit Type: level-1-2
> Interface number 0x0, local circuit ID 0x1
> Level-1 Metric: 10, Priority: 64, Circuit ID: CE1.01
> DR ID: 0000.0000.0000.00
> Level-1 IPv6 Metric: 10
> Number of active level-1 adjacencies: 0
> Level-2 Metric: 10, Priority: 64, Circuit ID: CE1.01
> DR ID: 0000.0000.0000.00
> Level-2 IPv6 Metric: 10
> Number of active level-2 adjacencies: 0
> Next IS-IS LAN Level-1 Hello in 7 seconds
> Next IS-IS LAN Level-2 Hello in 5 seconds
>
> CE2#sh clns int s1/0
> Serial1/0 is up, line protocol is up
> Checksums enabled, MTU 1500, Encapsulation FRAME-RELAY
> ERPDUs enabled, min. interval 10 msec.
> RDPDUs enabled, min. interval 100 msec., Addr Mask enabled
> Congestion Experienced bit set at 4 packets
> CLNS fast switching enabled
> CLNS SSE switching disabled
> DEC compatibility mode OFF for this interface
> Next ESH/ISH in 31 seconds
> Routing Protocol: IS-IS
> Circuit Type: level-1-2
> Interface number 0x0, local circuit ID 0x1
> Level-1 Metric: 10, Priority: 64, Circuit ID: CE2.01
> DR ID: 0000.0000.0000.00
> Level-1 IPv6 Metric: 10
> Number of active level-1 adjacencies: 0
> Level-2 Metric: 10, Priority: 64, Circuit ID: CE2.01
> DR ID: 0000.0000.0000.00
> Level-2 IPv6 Metric: 10
> Number of active level-2 adjacencies: 0
> Next IS-IS LAN Level-1 Hello in 2 seconds
> Next IS-IS LAN Level-2 Hello in 1 seconds
>
>
> R4#sh debug
> CLNS:
> IS-IS Adjacency related packets debugging is on
>
> Debug msg
> *Mar 1 01:07:37.327: ISIS-Adj: Sending L1 LAN IIH on Serial1/0, length
> 1500
> *Mar 1 01:07:40.815: ISIS-Adj: Sending L2 LAN IIH on Serial1/0, length
> 1500
> *Mar 1 01:07:47.243: ISIS-Adj: Sending L1 LAN IIH on Serial1/0, length
> 1500
> *Mar 1 01:07:50.627: ISIS-Adj: Sending L2 LAN IIH on Serial1/0, length
> 1500
> *Mar 1 01:07:56.075: ISIS-Adj: Sending L1 LAN IIH on Serial1/0, length
> 1500
> *Mar 1 01:07:59.483: ISIS-Adj: Sending L2 LAN IIH on Serial1/0, length
> 1500
> *Mar 1 01:08:04.163: ISIS-Adj: Sending L1 LAN IIH on Serial1/0, length
> 1500
> *Mar 1 01:08:08.603: ISIS-Adj: Sending L2 LAN IIH on Serial1/0, length
> 1500
> *Mar 1 01:08:13.211: ISIS-Adj: Sending L1 LAN IIH on Serial1/0, length
> 1500
> *Mar 1 01:08:17.811: ISIS-Adj: Sending L2 LAN IIH on Serial1/0, length
> 1500
> *Mar 1 01:08:22.663: ISIS-Adj: Sending L1 LAN IIH on Serial1/0, length
> 1500
> *Mar 1 01:08:25.735: ISIS-Adj: Sending L2 LAN IIH on Serial1/0, length
> 1500
> *Mar 1 01:08:32.363: ISIS-Adj: Sending L1 LAN IIH on Serial1/0, length
> 1500
> *Mar 1 01:08:33.715: ISIS-Adj: Sending L2 LAN IIH on Serial1/0, length
> 1500
> *Mar 1 01:06:03.955: ISIS-Adj: Sending L1 LAN IIH on Serial1/0, length
> 1500
> *Mar 1 01:06:04.451: ISIS-Adj: Sending L2 LAN IIH on Serial1/0, length
> 1500
>
>
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Received on Sun Nov 28 2010 - 11:47:03 ART