Actually, deleted aren't reported down by signalling, if you mean that the
FR switch sends LMI info about them. Deleted means that they aren't being
reported by LMI at all, but the router knows about them.
If the PVC is down but the FR switch knows about it, it will be reported as
inactive. It can be configured on the router and still be inactive, if the
circuit's broken (e.g. a problem at the other end of the PVC).
If you do a 'debug frame lmi', every minute the status of each PVC is
reported by the switch. There will be a message for each active and
inactive PVC (with status 0x2 and 0x0 respectively), but no message for
deleted PVCs, because the switch doesn't know about them.
Caveat - info above regarding switch messages applies to LMI type ANSI. I
don't know if it applies to all LMI types.
Also, partial mesh doesn't necessarily mean hub and spoke, although it's a
common configuration. It just means full mesh with some of the links
removed, which may turn it into hub and spoke or may just turn it into a
collection of random links (hopefully bearing some resemblance to optimum
traffic patterns :-)
JMcL
---------------------- Forwarded by Jenny Mcleod/NSO/CSDA on 04/06/2001
02:36 pm ---------------------------
"Doug Lockwood" @groupstudy.com on 04/06/2001
06:26:20 am
Please respond to "Doug Lockwood"
Sent by: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
cc:
Subject: RE: Need a helper to answer four questions [7:6974]
"1. What is the two status on PVC mode ? In SVC, which have three status
(call setup , transfer and call terminate). "
I have seen 3 on both ATM and Frame Relay:
Active, inactive and deleted.
Active were circuits that are "up"
Inactive were VC's that were not configured on that router that are
discovered by signaling
Deleted are VC's that are reported down by signaling.
"4. What is benefit of partial mesh compare with fully mesh? It will use
less routers or use less virtual circuits ?"
A partial mesh costs less, compared to a full mesh. It will use the same
number of routers, but less PVC's. Each pvc costs money and adds
complexity. However, if most of the traffic is not destined for the hub,
the hub and spoke adds latency and uses bandwidth on both links. Both
designs are appropriate, depending on the nature of the traffic.
Hope this helps.
Doug
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=7035&t=6974
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