Filtering frames int T/R interfaces and DLSW

jmfranco · ‎08-22-2003

Usually, I use to avoid some well-know destination mac frames could will be processed by DLSW process on ethernet routers using bridge group x input-pattern-list (1100-1199):

dlsw local-peer peer-id xxx.xxx.xxx.xxx

dlsw remote-peer 0 tcp yyy.yyy.yyy.yyy

dlsw bridge-group 5

interface Ethernet0/0

bridge-group 5

bridge-group 5 input-pattern-list 1100

access-list 1100 deny 0000.0000.0000 ffff.ffff.ffff 0300.8000.0000 0000.0000.00ff

access-list 1100 deny 0000.0000.0000 ffff.ffff.ffff 0300.4000.0000 0000.0000.0000

access-list 1100 deny 0000.0000.0000 ffff.ffff.ffff 0300.2000.0000 0000.0000.0000

access-list 1100 deny 0000.0000.0000 ffff.ffff.ffff 0300.0200.0000 0000.0000.0000

access-list 1100 deny 0000.0000.0000 ffff.ffff.ffff 0300.0800.0000 0000.0000.0000

access-list 1100 permit 0000.0000.0000 ffff.ffff.ffff 0000.0000.0000 ffff.ffff.ffff

My doubt is how can I this with token ring interfaces, or how can I use extended access-list to filter incoming frames?

This is a sample configuration with Token Ring:

source-bridge ring-group z

dlsw local-peer peer-id xxx.xxx.xxx.xxx

dlsw remote-peer 0 tcp yyy.yyy.yyy.yyy

interface TokenRing0/0

ip address ....

ring-speed 16

multiring all

source-bridge 26 12 2000

source-bridge spanning

dixho · ‎08-22-2003

Token ring/source-route bridging actually has a more powerful feature on filter than ethernet/transparent briding.

On top of MAC address filters (source-bridge input-address-list), SAP filters (source-bridge input-lsap-list or source-bridge output-lsap-list), and protocol type filter (source-bridge input-type-list or source-bridge output-type-list), you can use access expression to create a combination of MAC address filter, SAP filters and protocol type filters using logical operator "OR" and logical operator "AND". The command for access expression is access-expression.

For more information, please go to the following URL:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fibm_c/bcfpart1/bcfsrb.htm#1003771