Cisco ISE Software Configuration Guide - Page 9

Troubleshooting Tips, Configuring ATM Shaping on Terminated VCs, Restrictions - 1 3 release

Get Cisco ISE - Line Card ISE PDF manuals and user guides
UPC - 746320730097
View all Cisco ISE manuals
Add to My Manuals
Save this manual to your list of manuals

Page 9 highlights

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers How to Configure Layer 3 Terminated VCs on the 4-Port ATM ISE Line Card The syntax of the atm pvp command is: atm pvp vpi vpi is the ATM network VPI to use for this virtual circuit, in the range of 0 to 255 for UNI or 0 to 4095 for NNI; vci is the ATM network VCI to use for this virtual circuit, in the range of 0 to 655,535. Troubleshooting Tips To display information about the connected virtual circuits, use the following commands: Command Router# show atm pvc Router# show atm vc Purpose Displays current ATM PVC information. Displays current ATM VC information. Configuring ATM Shaping on Terminated VCs The 4-Port ATM ISE line cards support IP traffic shaping on terminated VCs. The following ATM shaping options are available: • Constant bit rate (CBR)-Supports real-time applications that request a static amount of bandwidth that is continuously available for the duration of the connection. (See Step 5.) • Real-time variable bit rate (VBR-rt)-Supports real-time applications that have bursty transmission characteristics. (See Step 6.) • Non-real-time variable bit rate (VBR-nrt)-Supports non-real-time applications with bursty transmission characteristics that tolerate high cell delay, but require low cell loss. (See Step 7.) • Unspecified bit rate (UBR)-Supports non-real-time applications that tolerate both high cell delay and cell loss on the network. There are no network service-level guarantees for the UBR service category, and therefore it is a best-effort service. (See Step 8.) To configure ATM shaping, perform the shaping commands in PVC mode. You should use only one of the shaping commands in Step 5 through Step 8, depending on the type of shaping to be configured. Restrictions CDVT When traffic shaping is configured on a VC, the cell delay variation (CDV) is set for the VC. This value will change according to the shaping class defined. The cell delay variation tolerance (CDVT) values are shown in Table 4. Table 4 CDVT per Traffic Class for Traffic Shaping Traffic Class CBR UBR VBR-RT VBR-NRT OC-12c/STM-4c Line Card 70 μsec 185 μsec 70 μsec 185 μsec OC-3c/STM-1 Line Card 70 μsec 305 μsec 70 μsec 305 μsec Cisco IOS Release 12.0(27)S 9

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers
How to Configure Layer 3 Terminated VCs on the 4-Port ATM ISE Line Card
9
Cisco IOS Release 12.0(27)S
The syntax of the
atm pvp
command is:
atm pvp
vpi
vpi
is the ATM network VPI to use for this virtual circuit, in the range of 0 to 255 for UNI or 0 to 4095
for NNI;
vci
is the ATM network VCI to use for this virtual circuit, in the range of 0 to 655,535.
Troubleshooting Tips
To display information about the connected virtual circuits, use the following commands:
Configuring ATM Shaping on Terminated VCs
The 4-Port ATM ISE line cards support IP traffic shaping on terminated VCs. The following ATM
shaping options are available:
•
Constant bit rate (CBR)—Supports real-time applications that request a static amount of bandwidth
that is continuously available for the duration of the connection. (See
Step 5
.)
•
Real-time variable bit rate (VBR-rt)—Supports real-time applications that have bursty transmission
characteristics. (See
Step 6
.)
•
Non-real-time variable bit rate (VBR-nrt)—Supports non-real-time applications with bursty
transmission characteristics that tolerate high cell delay, but require low cell loss. (See
Step 7
.)
•
Unspecified bit rate (UBR)—Supports non-real-time applications that tolerate both high cell delay
and cell loss on the network. There are no network service-level guarantees for the UBR service
category, and therefore it is a best-effort service. (See
Step 8
.)
To configure ATM shaping, perform the shaping commands in PVC mode. You should use only one of
the shaping commands in
Step 5
through
Step 8
, depending on the type of shaping to be configured.
Restrictions
CDVT
When traffic shaping is configured on a VC, the cell delay variation (CDV) is set for the VC. This value
will change according to the shaping class defined. The cell delay variation tolerance (CDVT) values are
shown in
Table 4
.
Command
Purpose
Router#
show atm pvc
Displays current ATM PVC information.
Router#
show atm vc
Displays current ATM VC information.
Table 4
CDVT per Traffic Class for Traffic Shaping
Traffic Class
OC-12c/STM-4c Line Card
OC-3c/STM-1 Line Card
CBR
70
μ
sec
70
μ
sec
UBR
185
μ
sec
305
μ
sec
VBR-RT
70
μ
sec
70
μ
sec
VBR-NRT
185
μ
sec
305
μ
sec