From: Joe Chang (changjoe@earthlink.net)
Date: Sun Jun 27 2004 - 10:14:01 GMT-3
Could someone point me to where I can learn about configuring PPPoA ?
----- Original Message -----
From: "Nick Tucker" <kitt@vnet.net>
To: <ccielab@groupstudy.com>
Sent: Sunday, June 27, 2004 8:44 AM
Subject: Isis again, this time w/ atm - and some other unrelated ?s
> Wanted to say things again for the isis help last week. I was another
> victim of not knowing it didn't take care of connected routes by default.
> This week, I'm at it again. As well as getting everything from the past
> weeks running that had my stumped, I was messing around with the various
> ways of doing atm, pppoa, etc and run into a setup in which I was having
> the same problem as before with ISIS. My connected route (in my case
> 12.1.1.x/24) is not getting sent from r1 to the rest of the network.
>
> The associated topology r2 <--> atm <--> r1 --<rest of network, topology
> irrevelevent)
>
> r3 directly on the other side of r1 does not see the atm interfaces in the
> routing table. As before, r3, and any router further out in my topology
> can ping r2 just fine. r2 cannot ping out anywhere except for r1. Here
is
> the associated configs
>
> r1
> -----
>
> vc-class atm type1
> encapsulation aal5snap
>
> interface ATM1/0
> no ip address
> ip router isis ccie
> class-int type1
> no atm ilmi-keepalive
> pvc 1/5
> protocol ip 12.1.1.2 broadcast
> protocol ppp Virtual-Template5
> !
> pvc 1/10
> protocol clns 49.0002.0100.0100.2002.00 broadcast
> protocol ppp Virtual-Template5
>
> interface Virtual-Template5
> ip address 12.1.1.1 255.255.255.0
> ip router isis ccie
>
> router isis ccie
> net 49.0001.0100.0100.1001.00
> redistribute ospf 1
> is-type level-2-only
>
>
> r2
> ------
> vc-class atm type2
> encapsulation aal5snap
>
> interface ATM1/0
> no ip address
> ip router isis ccie
> class-int type2
> no atm ilmi-keepalive
> pvc 1/5
> protocol ip 12.1.1.1 broadcast
> protocol ppp Virtual-Template5
> !
> pvc 1/10
> protocol clns 49.0001.0100.0100.1001.00 broadcast
> protocol ppp Virtual-Template5
> !
> no scrambling-payload
> bridge-group 1
>
> interface Virtual-Template5
> ip address 12.1.1.2 255.255.255.0
> ip router isis ccie
> !
> router isis ccie
> net 49.0002.0100.0100.2002.00
> is-type level-2-only
>
> r2#sh ip route (snipped a lot of it out, had lots going on here, this just
> to show I did have routes everywhere from r2)
>
> Gateway of last resort is not set
>
> 16.0.0.0/24 is subnetted, 1 subnets
> i L2 16.1.1.0 [115/10] via 12.1.1.1, Virtual-Access2
> [115/10] via 12.1.1.1, Virtual-Access1
> 71.0.0.0/24 is subnetted, 23 subnets
> i L2 71.1.6.0 [115/10] via 12.1.1.1, Virtual-Access2
> [115/10] via 12.1.1.1, Virtual-Access1
> i L2 71.1.7.0 [115/10] via 12.1.1.1, Virtual-Access2
> [115/10] via 12.1.1.1, Virtual-Access1
> 11.0.0.0/24 is subnetted, 1 subnets
> i L2 11.1.1.0 [115/10] via 12.1.1.1, Virtual-Access2
> [115/10] via 12.1.1.1, Virtual-Access1
> 12.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
> C 12.1.1.0/24 is directly connected, Virtual-Access1
> is directly connected, Virtual-Access2
> C 12.1.1.1/32 is directly connected, Virtual-Access1
> is directly connected, Virtual-Access2
> 13.0.0.0/24 is subnetted, 1 subnets
> i L2 13.1.1.0 [115/10] via 12.1.1.1, Virtual-Access2
> [115/10] via 12.1.1.1, Virtual-Access1
> 14.0.0.0/24 is subnetted, 1 subnets
> i L2 14.1.1.0 [115/10] via 12.1.1.1, Virtual-Access2
> [115/10] via 12.1.1.1, Virtual-Access1
> 15.0.0.0/24 is subnetted, 1 subnets
> i L2 15.1.1.0 [115/10] via 12.1.1.1, Virtual-Access2
> [115/10] via 12.1.1.1, Virtual-Access1
> r2#sh ip int brie
>
> Virtual-Access1 12.1.1.2 YES manual up
up
> Virtual-Access2 12.1.1.2 YES TFTP up
up
> Virtual-Template5 12.1.1.2 YES manual
> down down
> Loopback0 10.1.2.2 YES manual up
up
>
>
>
> My questions.
>
> 1) On R1 is there something else I should be trying to match to make sure
> my atm interface gets put into ospf? I DID specify match interface
> virtual-template5 in my redistribute connect into the ospf process in
> r1. There is no option to match virtual-access1 or 2.
>
> 2) Why in the show ip int brief above is the virutal access-2 a type
'TFTP'
> instead of manual? Just because its clns ?
>
> now, unrelated
>
> 3) Is there any signifigance to using dynamic when setting up dlsw peers
> that would use an isdn circuit that has ONLY dialer watch-group defined
(or
> for that matter, backup interface as well)? I modeled this last nite
> without using dynamic and my peers stayed up even thru the transition from
> frame to isdn. My reasoning is dialer-watch only cares about the watched
> route, it doesn't care that dlsw has traffic to send, and thus there is no
> worry of sna or netbios or whatever keeping my line up indefinitly or
> causing it to bounce. I can see the potential problem if you also keep a
> group on the interface that just denys ospf and permits everything else.
>
> 4) This is just a general question about tunnels. I dont know why, but
> I'm still not really that comfortable with them. I've been able to do
cool
> things like recursive routing loops and such with it. In a lot of
examples
> I see most of the time the ip address of the tunnel is unnumbered and
> pointing to another interface. Is there a good rule of thumb of when you
> would actually want to put addresses on tunnels and advertise them, vs
just
> using another interfaces address? For some reason I'm not thinking out of
> the box here, but in just about every instance I've worked with them, I
> never used them with their own addresses.
>
> My apologies if any of this had been discussed before but I did some more
> searching on isis and atm and wasnt able to turn up anything conclusive.
>
> As always thanks for any comments. My day is rapidly approaching. :o
>
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This archive was generated by hypermail 2.1.4 : Sat Jul 03 2004 - 19:40:51 GMT-3