Hi everyone
I have recently setup IPv6 routing on my Cisco 4500x and ran into problem for calculating the rate of traffic.
i have 2 Vlan Interfaces which are for ipv4 and ipv6 routing. the "counter" command is applied to both interfaces.
the Vlan interface used for ipv4 is showing the rate just fine but the one for IPv6 only shows the input rate and the output rate is 0.
i know there is about 40mbps output traffic on the interface.
IPv6 interface: switch#show int Vl1095
Vlan1095 is up, line protocol is up , Autostate Enabled
Hardware is Ethernet SVI, address is cc16.7e6f.debf (bia cc16.7e6f.debf)
Description: IPV6.INTERFACE
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not supported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:01, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
30 second input rate 5395000 bits/sec, 1979 packets/sec
30 second output rate 0 bits/sec, 0 packets/sec
L3 in Switched: ucast: 2183703 pkt, 525617330 bytes - mcast: 0 pkt, 0 bytes
L3 out Switched: ucast: 1380 pkt, 72105 bytes - mcast: 80 pkt, 7200 bytes
IPv6 L3 in Switched: ucast: 52635602 pkt, 15368246570 bytes - mcast: 0 pkt, 0 bytes
IPv6 L3 out Switched: ucast: 4018 pkt, 266419 bytes - mcast: 1730 pkt, 159760 bytes
54822160 packets input, 15894397193 bytes, 0 no buffer
Received 2855 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
7208 packets output, 505484 bytes, 0 underruns
0 output errors, 1 interface resets
0 unknown protocol drops
0 output buffer failures, 0 output buffers swapped out
IPv4 interface:
show int Vl2618
Vlan2618 is up, line protocol is up , Autostate Enabled
Hardware is Ethernet SVI, address is cc16.7e6f.debf (bia cc16.7e6f.debf)
Description: IPV4.INTERFACE
Internet address is 172.16.37.253/30
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 220/255, rxload 35/255
Encapsulation ARPA, loopback not set
Keepalive not supported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:16, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
30 second input rate 141013000 bits/sec, 68626 packets/sec
30 second output rate 863183000 bits/sec, 97477 packets/sec
L3 in Switched: ucast: 5894061436 pkt, 1516750042658 bytes - mcast: 0 pkt, 0 bytes
L3 out Switched: ucast: 7900906334 pkt, 8978189063040 bytes - mcast: 1312 pkt, 96576 bytes
IPv6 L3 in Switched: ucast: 0 pkt, 0 bytes - mcast: 0 pkt, 0 bytes
IPv6 L3 out Switched: ucast: 0 pkt, 0 bytes - mcast: 0 pkt, 0 bytes
5894070727 packets input, 1516751795293 bytes, 0 no buffer
Received 9291 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
7900907646 packets output, 8978189159616 bytes, 0 underruns
0 output errors, 1 interface resets
0 unknown protocol drops
0 output buffer failures, 0 output buffers swapped out
also the ios image is: "bootflash:/cat4500e-universalk9.SPA.03.11.04.E.152-7.E4.bin"
i tried both "counter" and "counter ipv6" on the IPv6 interface but is doesnt make any difference.
the running config is as below:
interface Vlan1095
description IPV6.INTERFACE
no ip address
load-interval 30
ipv6 address ??/126
ipv6 enable
counter ipv6
end
is there anything i can do about it?
Thanks, Amir
