[HECnet] Issues With Virtual Cisco Tunnels and HECnet

[Cory Smelosky]

Hello, all!

Dave and I have been attempting to establish a link between us using dynamips on my end, and real cisco gear on his end and we've hit some issues.

The GRE tunnel comes up fine, I can ping DECnet nodes on his end, and I can set host to nodes in his area.   It is also possible for nodes in his area to reach nodes in my area so packets are indeed getting /somewhere/.

However!   Despite this tunnel being identical to the other tunnels, I am unable to reach the rest of HECnet via the tunnel to him.

Here's the output of SHOW DECNET ROUTE:
---
marianne#sh decnet route
  Area             Cost   Hops                     Next Hop to Node             Expires   Prio
*1                       16         3                         Tunnel0 -> 61.1     
*2                       16         3                         Tunnel0 -> 61.1     
*3                       19         4                         Tunnel0 -> 61.1     
*4                       16         3                         Tunnel0 -> 61.1     
*5                       16         3                         Tunnel0 -> 61.1     
*6                       16         3                         Tunnel0 -> 61.1     
*7                       18         4                         Tunnel0 -> 61.1     
*8                       16         3                         Tunnel0 -> 61.1     
*9                         0         0                         (Local) -> 9.1023
*11                     16         3                         Tunnel0 -> 61.1     
*12                     16         3                         Tunnel0 -> 61.1     
*18                     17         4                         Tunnel0 -> 61.1     
*19                     16         3                         Tunnel0 -> 61.1     
*20                     17         4                         Tunnel0 -> 61.1     
*28                     16         3                         Tunnel0 -> 61.1     
*33                     17         4                         Tunnel0 -> 61.1     
*42                     15         2                         Tunnel0 -> 61.1     
*44                     16         3                         Tunnel0 -> 61.1     
*47                     18         4                         Tunnel0 -> 61.1     
*51                     18         4                         Tunnel0 -> 61.1     
*52                     15         2                         Tunnel0 -> 61.1     
*59                     15         2                         Tunnel0 -> 61.1     
---

And ping:
---
marianne#ping 61.1

Type escape sequence to abort.
Sending 5, 100-byte DECnet echos to atg 0 area.node 61.1, timeout is 5 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 40/56/76 ms
marianne#ping 61.3

Type escape sequence to abort.
Sending 5, 100-byte DECnet echos to atg 0 area.node 61.3, timeout is 5 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 44/56/68 ms
marianne#ping 1.13

Type escape sequence to abort.
Sending 5, 100-byte DECnet echos to atg 0 area.node 1.13, timeout is 5 seconds:
.....
Success rate is 0 percent (0/5)
---

My tunnel config:
---
interface Tunnel0
description Tunnel to HECnet (Dave)
no ip address
decnet cost 5
tunnel source Ethernet1/0
tunnel destination <his ip>
tunnel path-mtu-discovery
---

Ethernet1/0:
---
interface Ethernet1/0
ip address 10.10.10.99 255.255.255.0
no ip route-cache
duplex full
decnet cost 10
---

Overall DECnet config:
---
decnet routing 9.1023
decnet node-type area
---

His end has other functioning links, and his tunnel to me is the inverse.

Any ideas?

--
Cory Smelosky
http://gewt.net/ Personal stuff!
http://gimme-sympathy.org/ My permanently-a-work-in-progress pet project.