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FAQ How to transparent Cisco private protocol packets at S9300

Publication Date:  2012-07-27 Views:  46 Downloads:  0
Issue Description
Question:
1. Topology:
---------------G3/0/23 G3/0/21 G3/0/21 ---G3/0/23
Cisco-A------------S9303-1--------------S9303-2------------Cisco-B
2. A lot of private protocols are running between Cisco-A and Cisco-B, such as cdp,vtp,dtp, stp,lacp,pagp and udld.
How can S9303 transparent those protocol packets by adding related configurations?
Alarm Information
No
Handling Process
For those ports connecting to Cisco-A and Cisco-B, implement bellow configures:
interface GigabitEthernet3/0/23
port link-type trunk
port trunk allow-pass vlan 231
bpdu-tunnel enable
bpdu enable
undo negotiation auto
For those ports connecting between S9303-1 and S9303-2, implement bellow configures:
interface GigabitEthernet3/0/21
port link-type trunk
port trunk allow-pass vlan 231
bpdu enable
undo negotiation auto
Implement bellow configures at global configuration view of S9303-1 and S9303-2:
bpdu-tunnel cdp group-mac 0100-0ccd-cdd0
bpdu-tunnel vtp group-mac 0100-0ccd-cdd0
bpdu-tunnel dtp group-mac 0100-0ccd-cdd0
bpdu-tunnel lacp group-mac 0100-0ccd-cdd0
bpdu-tunnel pagp group-mac 0100-0ccd-cdd0
bpdu-tunnel udld group-mac 0100-0ccd-cdd0


Root Cause
No
Suggestions
Enable bpdu-tunnel feature at S9300 and modify mac address of those protocol packets so that S9300 can transparent the packets. Otherwise, those protocols packets would be forwarded to CPU for handling.

END