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non-repeating HELLO

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Randy Bush 2019-06-03 12:59:31 -07:00
parent edbdca05b3
commit 45b1360e28
1 changed files with 17 additions and 4 deletions
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21
draft-ietf-lsvr-l3dl.xml
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@ -624,12 +624,18 @@ uint32_t sbox_checksum_32(const uint8_t *b, const size_t n)
<section anchor="hello" title="HELLO"> <section anchor="hello" title="HELLO">
<t>WARNING: The second multicast address below is incorrect. We
need to get a new assignment. When a switch receives a frame with a
multicast destination MAC it does not recognize, it forwards to all
ports, which is what we really wanted with the second address
below.</t>
<t>The HELLO PDU is unique in that it is encapsulated in a multicast <t>The HELLO PDU is unique in that it is encapsulated in a multicast
Ethernet frame. It solicits response(s) from other LLEI(s) on the Ethernet frame. It solicits response(s) from other LLEI(s) on the
link. See <xref target="dhello"/> for why multicast is used. The link. See <xref target="dhello"/> for why multicast is used. The
destination multicast MAC Addressees to be used MUST be one of the destination multicast MAC Addressees to be used MUST be one of the
following, See Clause 9.2.2 of <xref target="IEEE802-2014"/>: <list following, See Clause 9.2.2 of <xref target="IEEE802-2014"/>:
style="hanging"> <?rfc subcompact="yes"?> <list style="hanging"> <?rfc subcompact="yes"?>
<t hangText="01-80-C2-00-00-0E:">Nearest Bridge = Propagation <t hangText="01-80-C2-00-00-0E:">Nearest Bridge = Propagation
constrained to a single physical link; stopped by all types of constrained to a single physical link; stopped by all types of
@ -646,8 +652,15 @@ uint32_t sbox_checksum_32(const uint8_t *b, const size_t n)
exchange.</t> exchange.</t>
<t>When an interface is turned up on a device, it SHOULD issue a <t>When an interface is turned up on a device, it SHOULD issue a
HELLO periodically. The interval is set by configuration with a HELLO.</t>
default of 60 seconds.</t>
<t>If a constrained destination address configured, see above, then
the HELLO need not be repeated.</t>
<t>If the configured destination address is one that is propagated
by switches, the HELLO SHOULD be repeated at a configured interval,
with a default of 60 seconds. This allows discovery by new devices
which come up on the layer two mesh.</t>
<!-- <!--
protocol "PDU Type = 0:8,Payload Length = 0:32,Sig Type = 0:8,Signature Length = 0:16" protocol "PDU Type = 0:8,Payload Length = 0:32,Sig Type = 0:8,Signature Length = 0:16"