Chuck wrote:
BTW, it occurs to me that we have had this discussion before.
There being
nothing in the routing table indicating IGRP or EIGRP hop
counts, how does
(E)IGRP know the diameter of the network of which it is a
member? And why
would it care? ;-)
Maybe one of these days I'll
At 12:51 AM 2/22/02, Chuck wrote:
it gets complicated, routing protocols versus ip packets.
It's not complicated. Is this Chuck Larrieu? You know that it's not
complicated.
Of course IP routing protocol packets are carried in an IP packet. No
biggie. They can set the IP TTL in the IP header
At 12:56 AM 2/22/02, Chuck wrote:
BTW, it occurs to me that we have had this discussion before.
Yes, unfortunately. ;-)
There being
nothing in the routing table indicating IGRP or EIGRP hop counts,
You can't see the hop count with show ip route perhaps, but the router
certainly saves the
It should say show ip eigrp topology network. Network is the argument to
the command. I had it encapsulated in less than and greater than symbols so
it got munged by the mail server. Argh.
There's probably other ways to see the hop count too. Bottom line: the
router saves it. You just
Actually there are hop count limits that need to be adhered to when you
implement EIGRP for Appletalk and IPX. You can search on CCO and read all
about it.
Steven A. Ridder wrote:
Anyone know why there is a hop-count in EIGRP? It has a 1 byte
value, but
it doesn't limit the number of hops
thanks!
--
RFC 1149 Compliant.
s vermill wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
Actually there are hop count limits that need to be adhered to when you
implement EIGRP for Appletalk and IPX. You can search on CCO and read all
about it.
Steven A. Ridder wrote:
It's possible it's just a holdover from IGRP which does limit the diameter
of a network by checking the hop count.
But EIGRP may limit the number of hops too, depending on which document you
read. ;-) The following document says that the default max is 100 but can
be increased with the metric
Priscilla Oppenheimer wrote:
It's possible it's just a holdover from IGRP which does limit
the diameter
of a network by checking the hop count.
But EIGRP may limit the number of hops too, depending on which
document you
read. ;-) The following document says that the default max is
100
I have seen references to EIGRP hop count limits before. As I
mentioned in my first post, that seems related to Appletalk and
IPX support. However, a 'sh ip prot' will indeed produce a
line that stated EIGRP maximum hopcount 100. Thus far, I
haven't been able to find a command to change
Well, a little messing around with the command line produced
this:
p1r1(config-router)#metric ?
holddown Enable IGRP holddown
maximum-hops Advertise IGRP routes greater than as
unreachable
weights Modify IGRP metric coefficients
However, setting the max-hops
to augment the other answers, the IP hop count is really the IP TTL value.
It can never exceed 255
EIGRP defaults to 100 hops, so I would expect that the routing packet IP TTL
is set at 100 at that point.
Well ( checking the sniffer trace that Priscilla so thoughtfully supplied a
couple of days
At 08:05 PM 2/21/02, Chuck wrote:
to augment the other answers, the IP hop count is really the IP TTL value.
It can never exceed 255
You're confusing two issues.
Remember the router has two jobs: forwarding packets and learning the
topology. Hop count has to do with the latter and affects what
At 05:45 PM 2/21/02, s vermill wrote:
Well, a little messing around with the command line produced
this:
p1r1(config-router)#metric ?
holddown Enable IGRP holddown
maximum-hops Advertise IGRP routes greater than as
unreachable
weights Modify IGRP metric
it gets complicated, routing protocols versus ip packets.
first of all, if I understand correctly, all ip routing protocols use ip
headers. The routing protocol packet is the payload, and not an entity unto
itself. I have seen traces of OSPF packets showing IP TTL of various values.
Someone
BTW, it occurs to me that we have had this discussion before. There being
nothing in the routing table indicating IGRP or EIGRP hop counts, how does
(E)IGRP know the diameter of the network of which it is a member? And why
would it care? ;-
Maybe one of these days I'll daisy chain the routers in
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