Lucent Technologies CAJUN M770, User Manual

Page: 52 / 266

Chapter 4 Managing Miscellaneous Commands
34 Cajun M770 ATM Switch User’s Guide
Listing the contents of the Cajun M770 ATM Switch’s IP route cache
The destination IP address, the router address, and the network mask are displayed
for each entry in the IP route cache. The default router address is also displayed.
This uses the M770 ATM Switch’s IP gateway address.
To display the contents of the M770 ATM Switch’s IP route cache, use the
ip routecache
command.
Connection Admission Control (CAC)
The M770 ATM Switch carries out Connection Admission Control (CAC) on both
the input and output ports to ensure that there is enough bandwidth to allow the
call to be accepted.
Bandwidth is reserved in the following manner for the different service categories:
• CBR -Bandwidth equal to Peak Cell Rate (PCR) requested will be allocated, if
available.
• VBR -Bandwidth allocation will use the Simple Generic CAC (SGCAC)
algorithm described in PNNI 1.0. This is based on PCR and SCR (Sustainable
Cell Rate) requested.
• UBR -UBR calls will always be accepted (assuming the limit on active VCs has
not been reached).
Note: If you have any rate limit set on a port then CAC will not allow connections
to be setup which could exceed the set limit.
All new circuits through the switch are allocated according to the SGCAC, this
provides the optimum usage of the bandwidth through your switch.
Command:
M15-155s8:/>ip routecache
Output:
IP route cache entries
--------------------------------
Destination Mask Router Interface
127.0.0.0 255.0.0.0 (local) m-spv
149.49.34.0 255.255.255.0 (local) lec
default * 149.49.34.5 lec