Re: Frame-Relay self ping on PPP

From: Roy Waterman <roy.waterman_at_gmail.com>
Date: Mon, 24 Aug 2009 11:29:14 +0100

Hi Divin

I was actually referring to not using virtual-temps at all, for which peer
nei route is enabled by default.
Virtual temps, whether using ip address or ip unnumbered, amount to one &
the same thing.

Anyway this has been an interesting thread :)

2009/8/24 Divin Mathew John <divinjohn_at_gmail.com>

> use peer neighbor-route under virtual-template and clear ip route *
>
>
> Sent from Cochin, KL, India
>
> On Mon, Aug 24, 2009 at 3:42 PM, Divin Mathew John <divinjohn_at_gmail.com>wrote:
>
>> Hey..
>>
>> I just labbed it up.. and there's a /32 route automatically ijected by PPP
>>
>> this is my running config
>>
>> R3
>>
>> interface Loopback0
>> ip address 3.3.3.3 255.255.255.0
>> !
>> interface Serial0/0
>> no ip address
>> encapsulation frame-relay
>> serial restart-delay 0
>> frame-relay lmi-type ansi
>> !
>> interface Serial0/0.34 point-to-point
>> frame-relay interface-dlci 203 ppp Virtual-Template1
>> !
>> interface Serial0/1
>> no ip address
>> shutdown
>> serial restart-delay 0
>> !
>> interface Serial0/2
>> no ip address
>> shutdown
>> serial restart-delay 0
>> !
>> interface Serial0/3
>> no ip address
>> shutdown
>> serial restart-delay 0
>> !
>> interface Virtual-Template1
>> ip unnumbered Loopback0
>> !
>> ip http server
>> no ip http secure-server
>> !
>> R3#sh ip route
>> Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
>> D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
>> N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
>> E1 - OSPF external type 1, E2 - OSPF external type 2
>> i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS
>> level-2
>> ia - IS-IS inter area, * - candidate default, U - per-user static
>> route
>> o - ODR, P - periodic downloaded static route
>>
>> Gateway of last resort is not set
>>
>> 3.0.0.0/24 is subnetted, 1 subnets
>> C 3.3.3.0 is directly connected, Loopback0
>> 4.0.0.0/32 is subnetted, 1 subnets
>> C 4.4.4.4 is directly connected, Virtual-Access3
>>
>> R4
>> interface Loopback0
>> ip address 4.4.4.4 255.255.255.0
>> !
>> interface Serial0/0
>> no ip address
>> encapsulation frame-relay
>> serial restart-delay 0
>> frame-relay lmi-type ansi
>> !
>> interface Serial0/0.34 point-to-point
>> frame-relay interface-dlci 302 ppp Virtual-Template1
>> !
>> interface Serial0/1
>> no ip address
>> shutdown
>> serial restart-delay 0
>> !
>> interface Serial0/2
>> no ip address
>> shutdown
>> serial restart-delay 0
>> !
>> interface Serial0/3
>> no ip address
>> shutdown
>> serial restart-delay 0
>> !
>> interface Virtual-Template1
>> ip unnumbered Loopback0
>> !
>> ip http server
>>
>> R4#sh ip route
>> Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
>> D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
>> N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
>> E1 - OSPF external type 1, E2 - OSPF external type 2
>> i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS
>> level-2
>> ia - IS-IS inter area, * - candidate default, U - per-user static
>> route
>> o - ODR, P - periodic downloaded static route
>>
>> Gateway of last resort is not set
>>
>> 3.0.0.0/32 is subnetted, 1 subnets
>> C 3.3.3.3 is directly connected, Virtual-Access3
>> 4.0.0.0/24 is subnetted, 1 subnets
>> C 4.4.4.0 is directly connected, Loopback0
>> R4#
>>
>> R4#p 3.3.3.3
>>
>> Type escape sequence to abort.
>> Sending 5, 100-byte ICMP Echos to 3.3.3.3, timeout is 2 seconds:
>> !!!!!
>> Success rate is 100 percent (5/5), round-trip min/avg/max = 4/20/56 ms
>> R4#
>>
>> Sent from Cochin, KL, India
>>
>> On Mon, Aug 24, 2009 at 3:08 PM, Roy Waterman <roy.waterman_at_gmail.com>wrote:
>>
>>> Doh!.
>>> Cheers Divin :)
>>>
>>> It has to be a static route that is more specific than the directly
>>> connected lo0.
>>> I guess I frown upon using static routes for solutions :)
>>>
>>> Is there another way of getting this work without statics?
>>>
>>> 2009/8/24 Divin Mathew John <divinjohn_at_gmail.com>
>>>
>>> use a sttatic route out the interface for R4's Loopback>!
>>>>
>>>> On Mon, Aug 24, 2009 at 2:56 PM, Roy Waterman <roy.waterman_at_gmail.com>wrote:
>>>>
>>>>> Hey Joe
>>>>> This is great.
>>>>> Could you explain why self ping works using mlpppofr as opposed to
>>>>> pppofr?
>>>>> Is there some logical reason for it?
>>>>> Also, could you also explain the ip numbered lo0 serial solution?
>>>>> Pinging
>>>>> your own ip is no problem with this, but pinging the other end of the
>>>>> link
>>>>> results in...issues.
>>>>>
>>>>> In my scenario:
>>>>>
>>>>> lo0 --- R3 s0/0.34 ---------------s0/0.43 R4 --- lo0
>>>>>
>>>>> R3
>>>>> int s0/0.34 p
>>>>> ip unnumbered lo0
>>>>> frame int 304
>>>>> int lo0
>>>>> ip add 10.1.34.3 255.255.255.0
>>>>>
>>>>> R4
>>>>> int s0/0.43 p
>>>>> ip unnumbered lo0
>>>>> frame int 403
>>>>> int lo0
>>>>> ip add 10.1.34.4 255.255.255.0
>>>>>
>>>>> R3 can self ping but cannot ping R4, as 10.1.34.4 points to lo0...
>>>>>
>>>>> R3#ping 10.1.34.3
>>>>>
>>>>> Type escape sequence to abort.
>>>>> Sending 5, 100-byte ICMP Echos to 10.1.34.3, timeout is 2 seconds:
>>>>> !!!!!
>>>>> Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
>>>>> R3#ping 10.1.34.4
>>>>>
>>>>> Type escape sequence to abort.
>>>>> Sending 5, 100-byte ICMP Echos to 10.1.34.4, timeout is 2 seconds:
>>>>> .....
>>>>> Success rate is 0 percent (0/5)
>>>>>
>>>>> R3#sh ip ro 10.1.34.4
>>>>> Routing entry for 10.1.34.0/24
>>>>> Known via "connected", distance 0, metric 0 (connected, via interface)
>>>>> Routing Descriptor Blocks:
>>>>> * directly connected, via Loopback0
>>>>> Route metric is 0, traffic share count is 1
>>>>>
>>>>>
>>>>> Could you show how you managed to get around this?
>>>>>
>>>>> Cheers man.
>>>>>
>>>>>
>>>>>
>>>>> 2009/8/24 Joe Astorino <jastorino_at_ipexpert.com>
>>>>>
>>>>> > You need either ppp multilink over frame or setup ip unnumbered and
>>>>> point
>>>>> > it to a loopback
>>>>> >
>>>>> >
>>>>> > ------Original Message------
>>>>> > From: Sameer Khurana
>>>>> > Sender: nobody_at_groupstudy.com
>>>>> > To: CCIE Groupstudy
>>>>> > ReplyTo: Sameer Khurana
>>>>> > Subject: Frame-Relay self ping on PPP
>>>>> > Sent: Aug 23, 2009 10:55 PM
>>>>> >
>>>>> > Hi Group,
>>>>> >
>>>>> > If there is a P2P serial connections, for example:
>>>>> >
>>>>> > R1:
>>>>> > ===
>>>>> > S1:
>>>>> > en fr
>>>>> > no fram inv
>>>>> > !
>>>>> > int S1.1 po
>>>>> > fram interface-dlci 102 ppp virtual-tem 1
>>>>> > !
>>>>> > int virtual-tem 1
>>>>> > ip add 1.1.1.1 255.255.255.0
>>>>> >
>>>>> >
>>>>> > R2:
>>>>> > ===
>>>>> > S1:
>>>>> > en fr
>>>>> > no fram inv
>>>>> > !
>>>>> > int S1.1 po
>>>>> > fram interface-dlci 201 ppp virtual-tem 1
>>>>> > !
>>>>> > int virtual-tem 1
>>>>> > ip add 1.1.1.2 255.255.255.0
>>>>> >
>>>>> > If we have to do self ping our own serial interfaces then what we
>>>>> need to
>>>>> > do? Means... R1 should ping its own 1.1.1.1 and R2 should ping
>>>>> 1.1.1.2.
>>>>> >
>>>>> > Thanks,
>>>>> > Sameer
>>>>> >
>>>>> >
>>>>> > Blogs and organic groups at http://www.ccie.net
>>>>> >
>>>>> >
>>>>> _______________________________________________________________________
>>>>> > Subscription information may be found at:
>>>>> > http://www.groupstudy.com/list/CCIELab.html
>>>>> >
>>>>> >
>>>>> >
>>>>> >
>>>>> >
>>>>> >
>>>>> >
>>>>> >
>>>>> >
>>>>> > Regards,
>>>>> >
>>>>> > Joe Astorino - CCIE #24347 R&S
>>>>> > Technical Instructor - IPexpert, Inc.
>>>>> > Cell: +1.586.212.6107
>>>>> > Fax: +1.810.454.0130
>>>>> > Mailto: jastorino_at_ipexpert.com
>>>>> >
>>>>> >
>>>>> > Blogs and organic groups at http://www.ccie.net
>>>>> >
>>>>> >
>>>>> _______________________________________________________________________
>>>>> > Subscription information may be found at:
>>>>> > http://www.groupstudy.com/list/CCIELab.html
>>>>> >
>>>>> >
>>>>> >
>>>>> >
>>>>> >
>>>>> >
>>>>> >
>>>>> >
>>>>>
>>>>>
>>>>> --
>>>>> Regards
>>>>> Roy
>>>>>
>>>>>
>>>>> Blogs and organic groups at http://www.ccie.net
>>>>>
>>>>> _______________________________________________________________________
>>>>> Subscription information may be found at:
>>>>> http://www.groupstudy.com/list/CCIELab.html
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>
>>>
>>> --
>>> Regards
>>> Roy
>>>
>>
>>
>

-- 
Regards
Roy
Blogs and organic groups at http://www.ccie.net
Received on Mon Aug 24 2009 - 11:29:14 ART

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