Question : Problem: Performance problems with Cisco 7513

Hello,

I recently installed a Cisco 7513 with an RSP4 (256MB RAM) and 4 100Mbit ethernet ports.  2 on a VIP2-40 and 2 FEIP.

I have 2 100Mbit Ethernet feeds from my ISP's.  All my servers are connected to Lucent Cajun P550 Switches.  The 7513 handles the inter-VLAN routing and is connected to the switch bank via a single 100Mbit trunk.  Utilization runs about 50-75Mbits outbound.

Here is the problem:

Throughput is painfully slow. Max download speed from one port to the other with no traffic moving through the router (offline for tests) is a max of 2MB.  VLAN to VLAN I can get 6MB on the same interface.  It is urgent that I get this to an acceptable level.  Max download speeds from other parts of the internet range from 150K-400K.  before I installed the 7513 I was running a little Linux router and the performance was 10x what the 7513 gives me.  This makes no sense to me.  Any help is GREATLY apreciated.  Here are parts of my configs:

  ip subnet-zero
ip flow-cache feature-accelerate
ip cef distributed
no ip domain-lookup
ip name-server 69.30.192.14
ip name-server 69.30.192.15
!
call rsvp-sync
!
!
!
!
!
!
!
!
interface FastEthernet0/0/0
 no ip address
 ip accounting output-packets
 ip route-cache flow
 full-duplex
 no cdp enable
 hold-queue 110 in

interface FastEthernet0/1/0
 description AFS 100Mbit
 ip address 0.0.0.0 255.255.255.252
 ip route-cache same-interface
 ip route-cache flow
 tx-queue-limit 32767
 full-duplex
 no cdp enable
 hold-queue 100 in

Answer : Problem: Performance problems with Cisco 7513

There are 3 interesting things that stand out:

1. Your FEIP is not VIP-based (i.e. it is old)
2. Your FEIP does not support dCEF.
3. You should probably have the "ip route-cache same-interface" command on your 8/1 - all those secondaries can take advantage of that if they are going in one secondary and out another secondary.

The Tolly Group did a study (back in 1997 or 1999?) and were pumping boatloads of data through a 7513. they were running 11.1something though.

Check Cisco's web site for performance tuning. I think your FEIP is what is slowing you down. Also, it might help to have everything on one cybus instead of 2.

-Eric