lldptool-evb(8)

1lldptool(8)                          Linux                         lldptool(8)
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NAME

6       evb - Show / manipulate EVB TLV configuration
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SYNOPSIS

9       lldptool -t -g ncb -i ethx -V evbCfg -c enableTx
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11       lldptool -T -g ncb -i ethx -V evbCfg -c enableTx=[yes|no]
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13       lldptool -t -g ncb -i ethx -V evbCfg -c fmode
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15       lldptool -T -g ncb -i ethx -V evbCfg -c fmode=[bridge|reflectiverelay]
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17       lldptool -t -g ncb -i ethx -V evbCfg -c capabilities
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19       lldptool -T -g ncb -i ethx -V evbCfg -c capabilities=[rte|ecp|vdp|none]
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21       lldptool -t -g ncb -i ethx -V evbCfg -c rte
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23       lldptool -T -g ncb -i ethx -V evbCfg -c rte=[<rte>]
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25       lldptool -t -g ncb -i ethx -V evbCfg -c vsis
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27       lldptool -T -g ncb -i ethx -V evbCfg -c vsis=[<number of vsis>]
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DESCRIPTION

31       The  EVB TLV is a TLV to announce the station and bridge's edge virtual
32       bridging (evb) capabilities and request the bridge forwarding mode.  If
33       both  sides  have  agree  on edge control protocol (ECP), VSI discovery
34       protocol (VDP) capabilities, both sides can exchange VDP TLV using  ECP
35       frames.   The  vsis  parameter  will set the maximum number of VSIs and
36       show the number of currently configured VSIs.
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ARGUMENTS

40       enableTx
41              Enables the EVB TLV to be transmitted
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43       fmode  shows or sets the forwarding mode between  bridge  (default)  or
44              reflectiverelay (RR).
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46       capabilities
47              shows  or  sets the local capabilities that are announced to the
48              adjacent switch in the TLV. This parameter will accept any  com‐
49              bination  of  rte, vdp or ecp, separated by ",". Use the keyword
50              "none" if you do not want to set any capabilities.
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52       rte    shows or set the local run time exponent (RTE). The RTE will  be
53              used as the base for the timing of the ECP and VDP protocols.
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55       vsis   shows  or  sets  the number of virtual station interfaces (VSIs)
56              that are announced to the  adjacent  switch  in  the  TLV.  This
57              parameter expects a number between 0 and 65535.
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Theory of Operation

61       The  EVB  TLV  is  used  to  announce and exchange supported parameters
62       between the station and an adjacent switch. The TLV  uses  the  nearest
63       customer bridge agent.
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65       If  "reflectiverelay"  is set as forwarding mode, the switch will allow
66       "reflection" of frames coming from different sources at the  same  port
67       back  to  the  port.  This  will  allow  communication  between virtual
68       machines on the same host via the switch.
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70       The capabilities parameter is used to set RTE, ECP and VDP support. VDP
71       TLVs in ECP frames can only be exchanged if both sides agree on ECP and
72       VDP as capabilities. RTE will be used as the base timing parameter  for
73       ECP and VDP.
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EXAMPLE & USAGE

77       Display locally configured values for eth8
78              lldptool -t -g ncb -i eth8 -V evbCfg
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80       Display remotely configured values for eth8
81              lldptool -n -g ncb -t -i eth8 -V evbCfg
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83       Display wether evb tlv is configured for tx on eth8
84              lldptool -t -g ncb -i eth8 -V evbCfg -c enableTx
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86       Display the currently requested forwarding mode for eth8
87              lldptool -t -g ncb -i eth8 -V evbCfg -c fmode
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89       Set the forwarding mode to reflective relay
90              lldptool -T -g ncb -i eth8 -V evbCfg -c fmode=reflectiverelay
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92       Display the currently configured capabilities
93              lldptool -t -g ncb -i ethx -V evbCfg -c capabilities
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95       Set the locally possible capabilities to RTE, ECP and VDP
96              lldptool -T -g ncb -i ethx -V evbCfg -c capabilities=rte,ecp,vdp
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98       Resets the locally possible capabilities to "none"
99              lldptool -T -g ncb -i ethx -V evbCfg -c capabilities=none
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101       Display the locally configured value for RTE
102              lldptool -t -g ncb -i ethx -V evbCfg -c rte
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104       Set the value for RTE
105              lldptool -T -g ncb -i ethx -V evbCfg -c rte=[<rte>]
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107       Display the configured maximum number of VSIs
108              lldptool -t -g ncb -i ethx -V evbCfg -c vsis
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110       Set the maximum number of VSIs
111              lldptool -T -g ncb -i ethx -V evbCfg -c vsis=[<number of vsis>]
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SOURCE

116       o      IEEE 802.1Qbg (http://www.ieee802.org/1/pages/802.1bg.html)
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NOTES

120       Currently the code in lldpad reflects draft 0 of the upcoming standard.
121       EVB TLVs on the wire can be decoded with wireshark > v1.6.
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AUTHOR

129       Jens Osterkamp
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133open-lldp                        February 2010                     lldptool(8)