3825 router, T3 Network Module capability

Unanswered Question
Dec 12th, 2007

I have a DS3 connection to the DR site.


HQ has a 7206 router and DR has a 3725 router with T3 Network Modules


http://www.cisco.com/en/US/products/hw/modules/ps2797/products_data_sheet09186a008010fba2.html


We have experienced issues of link flapping during heavy traffic throughput.


We had someone mention the 3725 router cannot handle a full T3 at line speed.


I am wondering about this line in the spec:

Full-rate T3/E3 with no services


What does this mean?


The link is Frame Relay with the following config on the interface:


interface Serial1/0

description MCI DS3

no ip address

encapsulation frame-relay IETF

ip route-cache flow

load-interval 30

dsu bandwidth 44210

!

interface Serial1/0.41 multipoint

description bridged VLAN


frame-relay map bridge 40 broadcast

frame-relay map bridge 41 broadcast

frame-relay interface-dlci 40

frame-relay interface-dlci 41

bridge-group 3

!

interface Serial1/0.100 point-to-point

ip address 192.168.2.6 255.255.255.252

frame-relay interface-dlci 100

!

interface Serial1/0.101 multipoint

description Bridged LAN

frame-relay map bridge 101 broadcast

frame-relay interface-dlci 101

bridge-group 1

!

interface Serial1/0.250 multipoint

description Bridge VLAN

frame-relay map bridge 250 broadcast

frame-relay interface-dlci 250

bridge-group 2


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Nagendra Kumar ... Thu, 12/13/2007 - 03:47

Hi Wilson,


Full-rate T3/E3 with no services - means when the router is configured only for packet forwarding (i.e) without any other services like QoS, NAT, ACL enabled. With no services enabled, the CPU will be fully utilised for packet forwarding.


If not, the CPU will be shared by other enabled services and obviously the throughput will be reduced.


If your requirement is T3/E3 line rate with services enabled, 3845 will be the better choice.


Regards,

Nagendra

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