Chapter 1
Overview of the Cisco 3825 Mobile Wireless Edge Router
UMTS-Iub(ATM0/IMA0.1 - ATM0/IMA.1): Peering Information
UMTS-Iub(ATM0/IMA0.1 - ATM0/IMA.1):
UMTS-Iub(ATM0/IMA0.1 - ATM0/IMA.1):
UMTS-Iub(ATM0/IMA0.1 - ATM0/IMA.1):
UMTS-Iub(ATM0/IMA0.1 - ATM0/IMA.1):
UMTS-Iub(ATM0/IMA0.1 - ATM0/IMA.1):
UMTS-Iub(ATM0/IMA0.1 - ATM0/IMA.1):
In the previous output, the local shorthaul/interface name appears before the dash (–), and the remote
Note
shorthaul/interface name appears after the dash (–).
4.
5.
6.
7.
8.
UMTS QoS
Three new commands are added using the Interface Configuration mode for this new feature: umts-iub
set dscp, umts-iub set peering dscp, and gsm-abis set dscp and one new ATM-VC Interface
Configuration command: umts-iub set dscp (see the
and
commands allow you to perform the following:
•
OL-15667-03
An admin shutdown of the base ATM interface will shut down all the peering instances, including
the primary peering and all the sub-interface peering(s). (In other words, they will move to the
CLOSED state).
An admin shutdown of an ATM sub-interface will shut down only the peering for that
sub-interface. (In other words, the admin shutdown of the ATM sub-interface will make the PVCs
on that sub-interface inactive, but it won't change the status of the PVCs on the other end of the
shorthaul, Node B or RNC.)
When the primary backhaul goes down and the primary peering goes down, the primary peering will
start sending Alarm Indication Signals (AISs) on the shorthaul, and; therefore, bring down the
shorthaul like before. So all shorthaul traffic will stop, including the PVC traffic off-loaded to the
alternate backhaul(s). (In this situation, the sub-interface peering connection state will stay OPEN
as long as the alternate backhaul doesn't go down).
When an alternate or sub-interface backhaul goes down, the sub-interface peering will go down, but
it won't bring down the shorthaul or start any alarms on the T1/E1 link. So primary backhaul traffic
won't be affected. (In this case, the sub-interface's state will not be changed since the sub-interface
is only the logical interface and changing its state will not generate any notification to the Node B
or RNC at the ATM level. If the Node B/RNC wants to be able to detect an alternate backhaul down
situation, configure the OAM-CC on the PVCs that are off-loaded to the alternate/sub-interface
backhaul).
Cannot configure the qsaal type PVC under the ATM sub-interface, which means the AAL5 type
traffic cannot be off-loaded to the alternate backhaul unless they are configured as the AAL0 type
on the Cisco 3825 router.
Appendix A, "Cisco 3825 Mobile Wireless Edge Router RAN-O Command
UMTS Shorthaul Interface
Set the default description value to tag the backhaul packet including peering and data generated
–
from the shorthaul in a UMTS Iub configuration.
Set the description value in the UMTS Iub configuration such that it overwrites the default value
–
defined previously. It is also used to tag the peering backhaul packet.
Local (192.168.10.2:6666) States:
Connect State: OPEN
Redundancy State: ACTIVE
Version: 4
Remote (192.168.10.1:6666) States:
Version: 4
"Configuring UMTS QoS" section on page 4-46
Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide
New Features in Cisco IOS Release 12.4(16)MR
Reference"). These new
1-33