dlsw local-switching between Ethernet interfaces on same router ?

[luc_m]

hi,

i need to know if DLSw "local-switching" is supported beetween 2 (or more) Ethernet interfaces on the same router.

This is for resolve situation of stations on two differents VLANs and an as400 on another VLAN.

Another possibility may be to have only one 802.1q interface on router (connected to trunk port on witch) and subinterfaces for each vlan ?

Thanks by advance for your help,

Luc Mignerey

sample :

dlsw local-peer

dlsw bridge-group 1

interface Ethernet0

ip address 132.146.252.2 255.255.255.0

bridge-group 1

interface Ethernet1

ip address 132.146.250.2 255.255.255.0

bridge-group 1

interface Ethernet2

ip address 132.146.251.2 255.255.255.0

bridge-group 1

bridge 1 protocol ieee

[dixho]

DLSw local switching does not support ethernet to ethernet. Please go to the following URL for details:

http://www.cisco.com/en/US/products/sw/iworksw/ps2474/prod_technical_reference09186a008011a67f.html

You should use transparent bridging to bridge traffic between VLANs. Transparent bridging is configured on ethernet 0, 1, and 2 in the configuration. The AS/400s on different VLANs should able to communicate with each others. You can reomve "Dlsw local-peer" and "dlsw bridge-group 1." Also, please consider to use VLAN-Bridge spanning tree. For information on VLAN-bridge spanning tree, please go to the following URL:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fibm_r1/br1fpt1/br1ftb.htm#1019966

[luc_m]

in this solution, the three VLANS will migrate to one bridged network ?

the broadcast domain will merge the 3 Vlans with transparent bridging, isn't it ?

Luc Mignerey

[dixho]

I agree that the 3 VLANs will merge into one broadcast domain.

The best you can do is to apply bridge filter. If you only want the two AS/400s communicate with each other, you can apply a MAC address filter:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fibm_c/bcfpart1/bcftb.htm#39469

If you have a lot of devices which are required to communicate with each others, please consider to use protocol filter:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fibm_c/bcfpart1/bcftb.htm#34772

The above URL discusses about different ethernet type frames. Please check the line description of the ethernet network interface of the AS/400s. There is a parameter called "Ethernet Standard." Most implementations use "both" or "all." It means that the AS/400 use both DIX and 802.2 frames. Please use lsap-list. If only ETHERII is defined on the line description, please use type-list.

[luc_m]

thanks for your help,

i must evaluate another solution.

Best regards

Luc Mignerey

[luc_m]

thanks for your help,

i must evaluate another solution.

Best regards

Luc Mignerey