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er have to
he link state
V (type, leng
erouting, RB
mber of nod
umber reach
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Ethernet fram
B (Ingress RB
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w frame, we
technology,
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tible with the
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ure 4.11. TRIL
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gth, value) da
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s of the RB
e IP routers u
2 between th
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LL protocol
e Ethernet ad
evel 3 and
used for ro
ata. In order
ntain a “hop
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mum value,
he first RBri
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ddress of the
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used today. R
e RBridges r
ure 4.11 sho
ddresses mea
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outing may
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message is
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idge in the n
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ridge). In the
ERB, which
s address rath
tains to 2 by
Routing
replaces
ows the
ans that
ated IP
contain
potential
i.e. they
passed.
by the
network,
e TRILL
e TRILL
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her than
ytes, as
www.it-ebooks.info
th
do
ST
pr
w
ad
ad
lo
co
W
op
ca
he
pa
th
a
8 Software Ne
herefore perfe
one with the
TP (Spannin
rocesses emp
Using leve
e no longe
ddresses. Th
dditional TLV
oops when re
ount the num
When this nu
perator, the f
When an E
alled the IRB
eader. It is de
art of the new
his a routing
reference. T
etworks
ectly compat
protocol ISng Tree Pro
ployed by TR
Figu
el-2 routing
er have to
he link state
V (type, leng
erouting, RB
mber of nod
umber reach
frame is destr
Ethernet fram
B (Ingress RB
ecapsulated b
w frame, we
technology,
This address
tible with the
-IS at level 2
otocol) in T
RILL.
ure 4.11. TRIL
between the
configure le
e protocol u
gth, value) da
Bridges main
des through
hes a maxim
royed.
me reaches th
Bridge), an e
by the ERB
e find the ad
as it uses th
s of the RB
e IP routers u
2 between th
TRILL. Figu
LL protocol
e Ethernet ad
evel 3 and
used for ro
ata. In order
ntain a “hop
which the
mum value,
he first RBri
xtra header i
(Egress RBr
ddress of the
he recipient’s
Bridges pert
used today. R
e RBridges r
ure 4.11 sho
ddresses mea
the associ
outing may
to prevent p
p count” – i
message is
determined
idge in the n
is added: the
ridge). In the
ERB, which
s address rath
tains to 2 by
Routing
replaces
ows the
ans that
ated IP
contain
potential
i.e. they
passed.
by the
network,
e TRILL
e TRILL
h makes
her than
ytes, as
www.it-ebooks.info
