SVC UBR+

From: gladston@br.ibm.com
Date: Thu Jun 23 2005 - 13:52:53 GMT-3


Hi,

If using a value other than 0 for Minimum Guaranteed Cell Rate(MCR), SVC connection fails.

Do you know if this is a limitation of the router or ls1010?
 (version is C3620-J1S3-M)

Config for MCR 0:

interface ATM1/0.569 multipoint
 description UBR+ SVC
 ip address 150.150.170.9 255.255.255.0
 atm esi-address 170170170009.00
 !
 svc nsap 47.00000000000000000000000A.170170170006.00
  protocol ip 150.150.170.6 broadcast
  ubr+ 780 0
 !
end

r9#pi 150.150.170.6

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 150.150.170.6, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 4/4/4 ms

r9#sh atm vc
           VCD / Peak Avg/Min Burst
Interface Name VPI VCI Type Encaps SC Kbps Kbps Cells Sts
1/0 1 0 5 PVC SAAL UBR 155000 UP
1/0 2 0 16 PVC ILMI UBR 155000 UP
1/0.269 111 0 139 SVC SNAP UBR 155000 UP
1/0.269 117 0 140 SVC SNAP UBR 155000 UP
1/0.269 118 0 141 SVC SNAP UBR 155000 UP
1/0.569 120 0 143 SVC SNAP UBR+ 780 0 UP

Config for MCR # 0:

r9#c
Enter configuration commands, one per line. End with CNTL/Z.
r9(config)#interface ATM1/0.569 multipoint
r9(config-subif)# description UBR+ SVC
r9(config-subif)# ip address 150.150.170.9 255.255.255.0
r9(config-subif)# atm esi-address 170170170009.00
%ATM:esi already configured on ATM1/0.569
r9(config-subif)# !
r9(config-subif)# svc nsap 47.00000000000000000000000A.170170170006.00
r9(config-if-atm-vc)# protocol ip 150.150.170.6 broadcast
r9(config-if-atm-vc)# ubr+ 780 0
r9(config-if-atm-vc)# ubr+ 780 32
r9(config-if-atm-vc)#^Z
r9#pi 150.150.170.6

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 150.150.170.6, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)

r9#sh atm vc
           VCD / Peak Avg/Min Burst
Interface Name VPI VCI Type Encaps SC Kbps Kbps Cells Sts
1/0 1 0 5 PVC SAAL UBR 155000 UP
1/0 2 0 16 PVC ILMI UBR 155000 UP
1/0.269 121 0 144 SVC SNAP UBR 155000 UP
1/0.269 123 0 145 SVC SNAP UBR 155000 UP
1/0.269 124 0 146 SVC SNAP UBR 155000 UP

PVC UBR+ works fine:

r9#c
Enter configuration commands, one per line. End with CNTL/Z.
r9(config)#interface ATM1/0.669 multipoint
r9(config-subif)# description PVC UBR+
r9(config-subif)# ip address 150.150.180.9 255.255.255.0
r9(config-subif)# pvc 2/200
r9(config-if-atm-vc)# protocol ip 150.150.180.6 broadcast
r9(config-if-atm-vc)#ub
r9(config-if-atm-vc)#ubr+ 128 64

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 150.150.180.6, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 4/4/8 ms
r9#



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