Rapid Spanning Tree................................................................................................ 50
To Enable Rapid Spanning Tree:.........................................................................51
Port Path Cost...................................................................................................... 51
Layer 3 Switch Configuration............................................................................. 52
Using the S50layer3 Script.................................................................................. 52
Layer 3 Routing Protocols with GateD ........................................................................54
Using the S55gatedRip1 Script................................................................................ 54
To Modify the GateD Scripts: ................................................................................. 56
Class of Service (COS) ................................................................................................ 57
Egress Queues.......................................................................................................... 57
Ingress Classification................................................................................................57
Marking and Re-marking......................................................................................... 58
Scheduling................................................................................................................ 58
ztmd Explained.................................................................................................... 58
zfilterd Explained..................................................................................................... 58
Running zfilterd........................................................................................................58
Restrictions on Implementation................................................................................59
Conflict Resolution..............................................................................................59
iptables and filtering............................................................................................ 60
Introduction..........................................................................................................60
Packet Walk......................................................................................................... 61
Filter Rules Specifications...................................................................................62
Specifying Source and Destination IP Addresses.................................................... 62
Specifying Protocol............................................................................................. 62
Specifying an ICMP Message Type.................................................................... 62
Specifying TCP or UDP ports............................................................................. 63
Specifying TCP flags...........................................................................................63
Specifying an Interface........................................................................................ 63
Filter Rule Targets............................................................................................... 63
Supported Targets................................................................................................63
Classical Targets..................................................................................................63
ZNYX Targets..................................................................................................... 63
ZACTION Examples........................................................................................... 64
Extensions to the default matches........................................................................64
tc and zqosd ............................................................................................................. 65
FIFO Queues (pfifo and bfifo disciplines)...........................................................65
PRIO and WRR queues....................................................................................... 67
The U32 Filter.......................................................................................................... 69
Combining Queuing Disciplines.............................................................................. 69
Handle Semantics................................................................................................ 70
COPS: Common Open Policy Service..........................................................................70
Protocol Architecture................................................................................................71
OpenArchitect PEP...................................................................................................71
Using pepd................................................................................................................72
Ethernet Switch Blade User's Guide
release 3.2.2j
page vi
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