From: Gustavo Novais (gustavo.novais@novabase.pt)
Date: Wed Aug 10 2005 - 13:06:39 GMT-3
Hello
I have a setup with two routers and a LS1010. I'm making R6 the arp
server.
After I do a shut/no shut on ATM interface I manage to ping the routers
own interface.
After a while with no activity, I no longer succeed of doing it. My
guess is that the svc that is established is torn down, but the map
continues on. Is there any way to work around this?
Is this the usual behaviour?
I send what I obsrved on R9 (136.10.69.2)
R9#ping 136.10.69.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 136.10.69.2, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
R9#sh atm map
Map list ATM4/0.69_ATM_ARP : DYNAMIC
arp maps to NSAP 47.0091810000000050E200EA01.666666666666.66
, connection up, VC 22, VPI 0, VCI 39, ATM4/0.69
ip 136.10.69.1 maps to NSAP 47.0091810000000050E200EA01.666666666666.66
, broadcast, connection up, VC 22, VPI 0, VCI 39, ATM4/0.69
ip 136.10.69.2 maps to NSAP 47.0091810000000050E200EA01.999999999999.99
, broadcast, connection up, VC 21, ATM4/0.69
R9#sh atm svc
VCD / Peak Avg/Min
Burst
Interface Name VPI VCI Type Encaps SC Kbps Kbps
Cells Sts
4/0.69 22 0 39 SVC SNAP UBR 155000
UP
R9#ping 136.10.69.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 136.10.69.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
R9#sh atm svc
VCD / Peak Avg/Min
Burst
Interface Name VPI VCI Type Encaps SC Kbps Kbps
Cells Sts
4/0.69 22 0 39 SVC SNAP UBR 155000
UP
R9#
R9#deb atm errors
ATM errors debugging is on
R9#ping 136.10.69.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 136.10.69.2, timeout is 2 seconds:
*Aug 9 16:54:48.674: ATM(ATM4/0.69): Encapsulation error, vc=21 not
connected.
*Aug 9 16:54:50.674: ATM(ATM4/0.69): Encapsulation error, vc=21 not
connected.
*Aug 9 16:54:52.674: ATM(ATM4/0.69): Encapsulation error, vc=21 not
connected.
*Aug 9 16:54:54.674: ATM(ATM4/0.69): Encapsulation error, vc=21 not
connected.
*Aug 9 16:54:56.674: ATM(ATM4/0.69): Encapsulation error, vc=21 not
connected.
Success rate is 0 percent (0/5)
R9# sh run | b ATM4/0
interface ATM4/0
no ip address
no atm ilmi-keepalive
pvc 0/5 qsaal
!
pvc 0/16 ilmi
!
!
interface ATM4/0.69 multipoint
ip address 136.10.69.2 255.255.255.240
atm esi-address 999999999999.99
atm arp-server nsap 47.0091810000000050E200EA01.666666666666.66
!
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