From: Charles T. Alexander (charles.t.alexander@verizon.net)
Date: Mon Apr 26 2004 - 13:20:34 GMT-3
Much better! Yes, that was the answer. Below is the quote from the
documentation.
channel-group channel-group-number mode {auto [non-silent] |
desirable [non-silent] | on}
....
onForces the interface to channel without PAgP. With the on
mode, a usable EtherChannel exists only when an interface group
in the on mode is connected to another interface group in the on
mode.
A review of the 3500XL doc indicated that it did not know about PAgP
Thanks!
Kenneth Wygand wrote:
> Charles,
>
> Please let us know if Bob's suggestion works... Thanks!
>
> Kenneth E. Wygand
> Systems Engineer, Project Services
> CISSP #37102, CCNP, CCDP, ACSP, Cisco IPT Design Specialist, MCP, CNA,
> Network+, A+
> Custom Computer Specialists, Inc.
> "The only unattainable goal is the one not attempted."
> -Anonymous
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Bob Sinclair
> Sent: Sunday, April 25, 2004 10:04 PM
> To: Charles T. Alexander; ccielab@groupstudy.com
> Subject: Re: Etherchannel on 3550 and 3500XL
>
> Charles,
>
> Try channel-group 1 mode on for the 3550. The desirable mode
> requires a
> partner in desirable or auto, and I do not believe the 3500 XL does
> PAgP.
>
> Bob Sinclair
> CCIE #10427, CISSP, MCSE
> www.netmasterclass.net
>
> ----- Original Message -----
> From: "Charles T. Alexander" <charles.t.alexander@verizon.net>
> To: <ccielab@groupstudy.com>
> Sent: Sunday, April 25, 2004 9:45 PM
> Subject: Etherchannel on 3550 and 3500XL
>
> > I have connected a 3550 and 3500XL together.
> >
> > All works well with just one connection using dot1q.
> > fa0/23 to fa0/11.
> >
> > When I add a port-channel to the 3550 and port group to 3500XL. It
> > seems that the interfaces work but flap.
> > fa0/23 to fa0/11
> > fa0/24 to fa0/12.
> >
> > Below are the two configs.
> > =========================
> > Cat 3550
> > Building configuration...
> >
> > Current configuration : 3243 bytes
> > !
> > version 12.1
> > no service pad
> > service timestamps debug uptime
> > service timestamps log uptime
> > no service password-encryption
> > !
> > hostname c1
> > !
> > logging buffered 10000 debugging
> > enable password radnor
> > !
> > ip subnet-zero
> > ip routing
> > ip tcp synwait-time 5
> > no ip domain-lookup
> > ip dhcp relay information option
> > !
> > !
> > !
> > spanning-tree extend system-id
> > spanning-tree vlan 40 max-age 30
> > system mtu 1518
> > !
> > !
> > !
> > interface Port-channel1
> > switchport trunk encapsulation dot1q
> > switchport mode trunk
> > no ip address
> > !
> > interface FastEthernet0/1
> > switchport access vlan 125
> > no ip address
> > !
> > interface FastEthernet0/2
> > switchport access vlan 125
> > no ip address
> > !
> > interface FastEthernet0/3
> > no ip address
> > !
> > interface FastEthernet0/4
> > no ip address
> > !
> > interface FastEthernet0/5
> > switchport access vlan 125
> > no ip address
> > !
> > interface FastEthernet0/6
> > no ip address
> > !
> > interface FastEthernet0/7
> > no ip address
> > !
> > interface FastEthernet0/8
> > switchport access vlan 192
> > no ip address
> > !
> > interface FastEthernet0/9
> > no ip address
> > !
> > interface FastEthernet0/10
> > no ip address
> > !
> > interface FastEthernet0/11
> > switchport access vlan 125
> > no ip address
> > !
> > interface FastEthernet0/12
> > switchport access vlan 192
> > no ip address
> > !
> > interface FastEthernet0/13
> > no ip address
> > !
> > interface FastEthernet0/14
> > no ip address
> > !
> > interface FastEthernet0/15
> > no ip address
> > !
> > interface FastEthernet0/16
> > switchport access vlan 14
> > switchport mode dot1q-tunnel
> > no ip address
> > duplex full
> > speed 100
> > l2protocol-tunnel cdp
> > l2protocol-tunnel stp
> > l2protocol-tunnel vtp
> > no cdp enable
> > !
> > interface FastEthernet0/17
> > no ip address
> > !
> > interface FastEthernet0/18
> > no ip address
> > !
> > interface FastEthernet0/19
> > no ip address
> > !
> > interface FastEthernet0/20
> > no ip address
> > !
> > interface FastEthernet0/21
> > no switchport
> > no ip address
> > !
> > interface FastEthernet0/22
> > no ip address
> > !
> > interface FastEthernet0/23
> > switchport trunk encapsulation dot1q
> > switchport mode trunk
> > no ip address
> > channel-group 1 mode desirable
> > !
> > interface FastEthernet0/24
> > switchport trunk encapsulation dot1q
> > switchport mode trunk
> > no ip address
> > channel-group 1 mode desirable
> > !
> > interface GigabitEthernet0/1
> > no ip address
> > !
> > interface GigabitEthernet0/2
> > no ip address
> > !
> > interface Vlan1
> > ip address 138.10.10.1 255.255.255.0
> > !
> > interface Vlan30
> > ip address 138.10.30.10 255.255.255.0
> > !
> > interface Vlan40
> > ip address 138.10.40.10 255.255.255.0
> > !
> > interface Vlan70
> > ip address 138.10.70.10 255.255.255.0
> > !
> > interface Vlan96
> > ip address 138.10.96.10 255.255.255.224
> > !
> > interface Vlan125
> > ip address 138.10.125.10 255.255.255.0
> > !
> > interface Vlan192
> > ip address 192.168.30.10 255.255.255.0
> > !
> > router rip
> > version 2
> > network 138.10.0.0
> > network 192.168.20.0
> > network 192.168.30.0
> > no auto-summary
> > !
> > ip classless
> > ip http server
> > !
> > !
> > !
> > alias exec i show ip route
> > alias exec r show run
> > alias exec c config t
> > alias exec u undebug all
> > alias exec b show ip bgp
> > alias exec bs show ip bgp sum
> > alias exec s show ip int brief
> > alias exec w write
> > !
> > line con 0
> > exec-timeout 0 0
> > logging synchronous
> > escape-character 27
> > line vty 0 4
> > exec-timeout 0 0
> > password bp
> > login
> > line vty 5 15
> > exec-timeout 0 0
> > password bp
> > login
> > !
> > !
> > monitor session 1 source interface Fa0/17
> > monitor session 1 filter vlan 10
> > monitor session 1 destination interface Fa0/18 encapsulation dot1q
> > end
> > =====================================
> > Cat 3500XL
> > Building configuration...
> >
> > Current configuration:
> > !
> > version 12.0
> > no service pad
> > service timestamps debug uptime
> > service timestamps log uptime
> > no service password-encryption
> > !
> > hostname c2
> > !
> > logging buffered 10000 debugging
> > enable password radnor
> > !
> > !
> > !
> > !
> > !
> > !
> > ip subnet-zero
> > ip tcp synwait-time 5
> > no ip domain-lookup
> > !
> > !
> > !
> > interface FastEthernet0/1
> > !
> > interface FastEthernet0/2
> > !
> > interface FastEthernet0/3
> > switchport access vlan 30
> > !
> > interface FastEthernet0/4
> > switchport access vlan 40
> > !
> > interface FastEthernet0/5
> > !
> > interface FastEthernet0/6
> > switchport access vlan 96
> > !
> > interface FastEthernet0/7
> > switchport access vlan 70
> > !
> > interface FastEthernet0/8
> > !
> > interface FastEthernet0/9
> > switchport access vlan 96
> > !
> > interface FastEthernet0/10
> > !
> > interface FastEthernet0/11
> > port group 1
> > switchport trunk encapsulation dot1q
> > switchport mode trunk
> > !
> > interface FastEthernet0/12
> > port group 1
> > switchport trunk encapsulation dot1q
> > switchport mode trunk
> > !
> > interface GigabitEthernet0/1
> > !
> > interface GigabitEthernet0/2
> > !
> > interface VLAN1
> > ip address 138.10.10.2 255.255.255.0
> > no ip directed-broadcast
> > no ip route-cache
> > !
> > alias exec r show run
> > alias exec c config t
> > alias exec u undebug all
> > alias exec s show ip int brief
> > alias exec w write
> > !
> > line con 0
> > exec-timeout 0 0
> > logging synchronous
> > transport input none
> > escape-character 27
> > stopbits 1
> > line vty 0 4
> > exec-timeout 0 0
> > password bp
> > login
> > line vty 5 15
> > exec-timeout 0 0
> > password bp
> > login
> > !
> > end
> >
> > c2#
> >
> >
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