11-08-2009 02:18 AM - edited 03-04-2019 06:38 AM
does anyone know how to implement OSI/clns over IP tunnelling on the cisco 7609 router not ip over clns tunnel?
11-08-2009 04:40 AM
Hello Mohamed,
on routers I've used CLNS in a GRE tunnel.
so that CLNS pdus are placed inside a GRE packet.
you may need to tune clns mtu to be able to run ISIS for CLNS over the GRE tunnel.
check what options you have under a tunnel interface
interface tunnel x
clns router isis
clns mtu 1460
tunnel source ip1
tunnel destination ip2
tunnel mode gre
Hope to help
Giuseppe
11-08-2009 05:01 AM
11-08-2009 05:50 AM
Hello Mohamed,
it is enough to configure both C7609 with a tunnel GRE (if supported)
clns isis -> routing CLNS packets over the tunnel
you shouldn't need anything else.
I used this system to carry CLNS traffic inside an MPLS VPN.
the real problem is that I'm afraid C7609 don't support CLNS routing.
if so you can use an EoMPLS tunnel to carry CLNS traffic over the IPv4 cloud (it requires MPLS enabled in the cloud)
or EoMPLS over a GRE tunnel.
Edit:
I see clns supported in a C7609 in my network
clns ?
cache-invalidate-delay Delay CLNS route cache invalidation
configuration-time Define the rate at which ESH and ISH packets are sent
filter-expr Define CLNS filter expression
filter-set Define CLNS filter set
holding-time Holdtime advertised in ESH/ISH PDUs
host Define a name mapping for an NSAP address
net Define a Network Entity Title (NET)
packet-lifetime Define initial lifetime for locally generated packets
route Define a CLNS static route
>>> routing Enable clns routing
security pass-through Do not reject packet with security options set
template-alias Define CLNS template alias
want-erpdu Request error PDUs on packets sourced by router
this device is using
sh ver | inc image
System image file is "bootdisk:c7600rsp72043-advipservicesk9-mz.122-33.SRC.bin"
So I think the CLNS over GRE approach can be used.
the device will route CLNS packets and IPv4 packets
Hope to help
Giuseppe
11-09-2009 03:01 AM
i tried this config based on attaeched topology, its not working, i want to exchange isis routing updates between the two sites and also the traffic between two sites
config
=====================================================
en
conf t
hos R1
int fast 0/0
clns mtu 1460
clns router isis
no shut
exit
router isis
net 49.0001.0000.0000.0001.00
interface fast 0/0
clns router isis
--------------------------------------------------
en
conf t
hos R2
int fast 0/0
no shut
clns mtu 1460
clns router isis
exit
int ser 1/0
no shut
ip add 10.1.1.1 255.255.255.0
exit
interface Tunnel 0
ip address 17.1.1.2 255.255.255.252
clns mtu 1460
clns router isis
tunnel source fast 1/0
tunnel destination 10.1.2.1
tunnel mode gre ip
exit
router isis
net 49.0001.0000.0000.0002.00
interface fast 0/0
clns router isis
--------------------------------------------------
--------------------------------------------------
en
conf t
hos R7
int se 1/0
no shut
ip add 14.1.1.2 255.255.255.0
exit
int fast 0/0
no shut
clns mtu 1460
clns router isis
exit
interface Tunnel0
ip address 17.1.1.1 255.255.255.252
clns mtu 1460
clns router isis
tunnel source fast 1/0
tunnel destination 10.1.1.1
tunnel mode eon
exit
router isis
net 49.0002.0000.0000.0007.00
interface fast 0/0
clns router isis
--------------------------------------------------
en
conf t
hos R8
int fast 0/0
clns mtu 1460
clns router isis
no shut
exit
=====================================================
11-09-2009 03:22 AM
Hello Mohamed,
in global config
clns routing
is needed
Hope to help
Giuseppe
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