diff options
| author |   stephen hemminger <shemminger@vyatta.com> | 2012-11-13 07:53:07 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2012-11-14 20:20:44 -0500 |
| commit | a2e01a65cd7135dab26d27d4b589b2e5358bec99 (patch) | |
| tree | 3b51f10fa3e17cb734daba83b94d7466ac348a67 /include | |
| parent | bridge: add template for bridge port flags (diff) | |
| download | linux-dev-a2e01a65cd7135dab26d27d4b589b2e5358bec99.tar.xz linux-dev-a2e01a65cd7135dab26d27d4b589b2e5358bec99.zip | |
bridge: implement BPDU blocking
This is Linux bridge implementation of STP protection
(Cisco BPDU guard/Juniper BPDU block). BPDU block disables
the bridge port if a STP BPDU packet is received.
Why would you want to do this?
If running Spanning Tree on bridge, hostile devices on the network
may send BPDU and cause network failure. Enabling bpdu block
will detect and stop this.
How to recover the port?
The port will be restarted if link is brought down, or
removed and reattached. For example:
# ip li set dev eth0 down; ip li set dev eth0 up
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/linux/if_link.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h index 96f7cf49367b..5e871e4d923f 100644 --- a/include/uapi/linux/if_link.h +++ b/include/uapi/linux/if_link.h @@ -216,6 +216,7 @@ enum { IFLA_BRPORT_PRIORITY, /* " priority */ IFLA_BRPORT_COST, /* " cost */ IFLA_BRPORT_MODE, /* mode (hairpin) */ + IFLA_BRPORT_GUARD, /* bpdu guard */ __IFLA_BRPORT_MAX }; #define IFLA_BRPORT_MAX (__IFLA_BRPORT_MAX - 1) |