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New Member

Cisco 7606 - using fax/y as a router interface - rate-limit ?!


i have a fa4/3 port and i want to use it as a router interface instead of a switchport.

this is because i have to do a rate-limit both directions on that port.

now - i don't know why .... but it doesn't work ... the rate-limit ...

here is what we have:

cisco7606 - native IOS

switchr#sh mls qos

QoS is enabled globally

Microflow policing is enabled globally

Vlan or Portchannel(Multi-Earl) policies supported: Yes

Egress policies supported: No

----- Module [1] -----

QoS global counters:

Total packets: 2262974

IP shortcut packets: 0

Packets dropped by policing: 631

IP packets with TOS changed by policing: 32055

IP packets with COS changed by policing: 0

Non-IP packets with COS changed by policing: 0

interface FastEthernet4/3

description Link to cx

ip address

no ip proxy-arp

rate-limit input access-group 152 256000 1500 2000 conform-action transmit exceed-action drop

rate-limit output access-group 152 256000 1500 2000 conform-action transmit exceed-action drop

load-interval 30

no cdp enable


access-list 152 is there and it's working because i saw matches on it.

FastEthernet4/3 is up, line protocol is up

Internet address is

Broadcast address is

Address determined by setup command

MTU is 1500 bytes

Helper address is not set

Directed broadcast forwarding is disabled

Outgoing access list is not set

Inbound access list is not set

Proxy ARP is disabled

Local Proxy ARP is disabled

Security level is default

Split horizon is enabled

ICMP redirects are always sent

ICMP unreachables are always sent

ICMP mask replies are never sent

IP fast switching is enabled

IP fast switching on the same interface is disabled

IP Flow switching is disabled

IP CEF switching is enabled

IP Feature Fast switching turbo vector

IP Feature CEF switching turbo vector

IP multicast fast switching is enabled

IP multicast distributed fast switching is disabled

IP route-cache flags are Fast, Distributed, CEF

Router Discovery is disabled

IP output packet accounting is disabled

IP access violation accounting is disabled

TCP/IP header compression is disabled

RTP/IP header compression is disabled

Probe proxy name replies are disabled

Policy routing is disabled

Network address translation is disabled

WCCP Redirect outbound is disabled

WCCP Redirect inbound is disabled

WCCP Redirect exclude is disabled

BGP Policy Mapping is disabled

IP multicast multilayer switching is disabled

so .... i don't understand what's happening ... it looks like those IP packets don't go through the rate-limit process ...


New Member

Re: Cisco 7606 - using fax/y as a router interface - rate-limit

The 6500/7600 can *not* do rate limiting on output. This is a hardware

limitation (specifically, a PFC2 limitation), and does not depend on

CatOS vs native IOS.

I'm not sure if the same limitation applies on OSMs.

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