From: Brian McGahan (brian@cyscoexpert.com)
Date: Wed Nov 13 2002 - 18:27:44 GMT-3
Dave,
No, I mean layer 3 ports. Observe the following:
Cat3550(config)#interface range fa0/21 - 24
Cat3550(config-if-range)#channel-group 1 mode on
Creating a port-channel interface Port-channel1
Cat3550(config-if-range)#int po1
Cat3550(config-if)#no switchport
Command rejected: Not a convertable port.
Cat3550(config-if)#interface range fa0/21 - 24
Cat3550(config-if-range)#no switchport
Cat3550(config-if-range)#channel-group 1 mode on
Cat3550(config-if-range)#int po1
Cat3550(config-if)#no switchport
Cat3550(config-if)#ip address 1.2.3.4 255.0.0.0
Cat3550(config-if)#end
Cat3550#
The channel can not be a L3 interface while its member ports are
L2 links. For the majority of configurations, members of the channel
group inherit configuration done on the channel interface, but not in
this case.
The easiest way to do this is just to create the port-channel
interface first, then define an interface-range macro for the physical
ports and the logical port together:
Cat3550(config)#int port-channel 10
Cat3550(config-if)#exit
Cat3550(config)#define interface-range FEC10 fa0/21 - 24, port 10
Cat3550(config)#int range macro FEC10
Cat3550(config-if-range)#no switchport
Cat3550(config-if-range)#channel-group 10 mode on
Cat3550(config-if-range)#end
Cat3550#sh int status | in routed
Fa0/21 connected routed a-full a-100 10/100BaseTX
Fa0/22 connected routed a-full a-100 10/100BaseTX
Fa0/23 connected routed a-full a-100 10/100BaseTX
Fa0/24 connected routed a-full a-100 10/100BaseTX
Po10 connected routed a-full a-100
Cat3550#show etherchannel summary
Flags: D - down P - in port-channel
I - stand-alone s - suspended
R - Layer3 S - Layer2
u - unsuitable for bundling
U - port-channel in use
d - default port
Group Port-channel Ports
-----+------------+-----------------------------------------
10 Po10(RU) Fa0/21(P) Fa0/22(P) Fa0/23(P) Fa0/24(P)
Now apply the L3 configuration to the port-channel interface:
Cat3550#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Cat3550(config)#int po10
Cat3550(config-if)#ip ad 1.1.1.2 255.0.0.0
Cat3550(config-if)#end
Cat3550#sh ip route
<snip>
C 1.0.0.0/8 is directly connected, Port-channel10
Cat3550#ping 1.1.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 1.1.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
Cat3550#
Tada! 400Mbps p2p routed link.
HTH
Brian McGahan, CCIE #8593
Director of Design and Implementation
brian@cyscoexpert.com
CyscoExpert Corporation
Internetwork Consulting & Training
Voice: 847.674.3392
Fax: 847.674.2625
> -----Original Message-----
> From: MADMAN [mailto:dave@interprise.com]
> Sent: Wednesday, November 13, 2002 2:51 PM
> To: Brian McGahan
> Cc: 'Weidong Xiao'; ccielab@groupstudy.com
> Subject: Re: 3550 layer 3 etherchannel
>
>
> Do you mean L2 ports first???
>
> dave
>
> Brian McGahan wrote:
> >
> > Weidong,
> >
> > All member ports must be L3 ports first. Try this:
> >
> > Interface range fa0/1 - 2, po1
> > No switchport
> >
> > HTH
> >
> > Brian McGahan, CCIE #8593
> > Director of Design and Implementation
> > brian@cyscoexpert.com
> >
> > CyscoExpert Corporation
> > Internetwork Consulting & Training
> > Voice: 847.674.3392
> > Fax: 847.674.2625
> >
> > > -----Original Message-----
> > > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
Behalf
> > Of
> > > Weidong Xiao
> > > Sent: Wednesday, November 13, 2002 1:53 PM
> > > To: ccielab@groupstudy.com
> > > Subject: 3550 layer 3 etherchannel
> > >
> > > Hi group,
> > >
> > > I was running EMI on a 3550 and 'ip routing' enabled, but couldn't
set
> > up
> > > a layer 3 etherchannel.
> > > Can somebody tell me what I missed?
> > >
> > > Thanks in advance,
> > >
> > > Weidong
> > >
> > > --------------------------------
> > > interface FastEthernet0/1
> > > description LINK-TO-RSW1
> > > no ip address
> > > duplex full
> > > speed 100
> > > channel-group 1 mode desirable non-silent
> > > !
> > > interface FastEthernet0/2
> > > description LINK-TO-RSW1
> > > no ip address
> > > duplex full
> > > speed 100
> > > channel-group 1 mode desirable non-silent
> > >
> > > and then:
> > >
> > > SW3(config)#interface Port-channel1
> > > SW3(config-if)#no sw
> > > SW3(config-if)#no switchport
> > > Command rejected: Not a convertable port. <-------WHY?
> > > SW3(config-if)#ip address 2.2.2.2 255.0.0.0
> > >
> > > % IP addresses may not be configured on L2 links.
>
> --
> David Madland
> CCIE# 2016
> Sr. Network Engineer
> Qwest Communications
> 612-664-3367
>
> "You don't make the poor richer by making the rich poorer." --Winston
> Churchill
This archive was generated by hypermail 2.1.4 : Tue Dec 03 2002 - 07:22:59 GMT-3