From: Brian Lodwick (xpranax@xxxxxxxxxxx)
Date: Wed Mar 13 2002 - 16:26:26 GMT-3
A little while back there was a question to the list talking about
translational bridging and there was some controversy if you could send
layer-3 traffic through a router serving as a translational bridge.
I also said I would lab it up for the original person who posted their
config to prove that you can.
So here it is.
My setup:
r3)e0 -----CAT5000----- e0/0(r6)tok0/0 -----CAT3920---- tok0(r4
r3's ethernet 0 interface is addressed 34.0.0.3 255.255.255.0
r4's token-ring 0 interface is addressed 34.0.0.4 255.255.255.0
r3#ping
Protocol [ip]:
Target IP address: 34.0.0.4
Repeat count [5]: 100
Datagram size [100]:
Timeout in seconds [2]:
Extended commands [n]:
Sweep range of sizes [n]:
Type escape sequence to abort.
Sending 100, 100-byte ICMP Echos to 34.0.0.4, timeout is 2 seconds:
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Success rate is 100 percent (100/100), round-trip min/avg/max = 8/9/12 ms
r4#ping
Protocol [ip]:
Target IP address: 34.0.0.3
Repeat count [5]: 100
Datagram size [100]:
Timeout in seconds [2]:
Extended commands [n]:
Sweep range of sizes [n]:
Type escape sequence to abort.
Sending 100, 100-byte ICMP Echos to 34.0.0.3, timeout is 2 seconds:
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Success rate is 100 percent (100/100), round-trip min/avg/max = 4/9/12 ms
Below are the configs from all routers and switches:
r3#sh run
Building configuration...
Current configuration:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname r3
!
!
ip subnet-zero
no ip domain-lookup
!
!
!
interface Ethernet0
ip address 34.0.0.3 255.255.255.0
no ip directed-broadcast
!
interface Serial0
no ip address
no ip directed-broadcast
encapsulation frame-relay
no ip mroute-cache
no fair-queue
!
interface Serial0.301 point-to-point
ip address 10.0.0.3 255.255.255.0
no ip directed-broadcast
frame-relay interface-dlci 301 protocol ip 10.0.0.1
!
interface Serial1
no ip address
no ip directed-broadcast
shutdown
!
ip classless
!
alias exec ip sh ip route
alias exec int sh ip int brief
alias exec ipx sh ipx route
!
line con 0
transport input none
line aux 0
line vty 0 4
login
!
end
r4#sh run
Building configuration...
Current configuration : 857 bytes
!
version 12.2
no service single-slot-reload-enable
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname r4
!
logging rate-limit console 10 except errors
!
ip subnet-zero
no ip finger
no ip domain-lookup
!
no ip dhcp-client network-discovery
!
!
!
!
interface Serial0
no ip address
encapsulation frame-relay
!
interface Serial0.401 point-to-point
ip address 10.0.0.4 255.255.255.0
frame-relay interface-dlci 401 protocol ip 10.0.0.1
!
interface Serial1
no ip address
shutdown
!
interface TokenRing0
mtu 1500
ip address 34.0.0.4 255.255.255.0
ring-speed 16
multiring all
!
ip kerberos source-interface any
ip classless
ip http server
!
!
alias exec ip sh ip route
alias exec int sh ip int brief
alias exec ipx sh ipx route
!
line con 0
transport input none
line aux 0
line vty 0 4
login
!
end
(r6 tok0/0 is plugged into port 4 on the 3920, and r4 tok0 is plugged into
port 2 on the 3920)
TrBRF/TrCRF ID Brdg/Rng Ports Local State
Bridge1 10 0x01 preferred
Ring4 15 0x04 yes preferred
Ring6 20 0x06 yes preferred
Port Mode TrCRF TrBRF
1 Static trcrf-default trbrf-default
2 Static Ring4 Bridge1
3 Static trcrf-default trbrf-default
4 Static Ring6 Bridge1
VLAN ID 10
VLAN Name Bridge1
State Operational
MTU 1500
Bridge Number 0x01
VLAN ID 15
VLAN Name Ring4
Parent VLAN Bridge1
State Operational
Ring Number 0x04
Bridging Mode SRB
Max ARE Bridge Hop Count 7
Max STE Bridge Hop Count 7
Backup CRF No
Ports in TrCRF 2
VLAN ID 20
VLAN Name Ring6
Parent VLAN Bridge1
State Operational
Ring Number 0x06
Bridging Mode SRB
Max ARE Bridge Hop Count 7
Max STE Bridge Hop Count 7
Backup CRF No
Ports in TrCRF 4
(r6 eth0/0 is plugged into port 3/3 on the CAT5000, and r3 eth0 is plugged
into port 3/1 on the CAT5000) this stuff really has no bearing except
ofcourse the ports need to be in the same VLAN. Nothing different on the
CAT5000.
cat5 (enable) sh vlan
VLAN Name Status IfIndex Mod/Ports, Vlans
---- -------------------------------- --------- -------
------------------------
1 default active 91 1/1-2
3/1,3/3,3/7-12
2 VlanA active 96
3 VlanB active 97 3/6
4 VlanC active 98 3/5
10 VLAN0010 active 99 3/2,3/4
>>>Brian
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:57:03 GMT-3