RE: fallback bridge

From: Victor Cappuccio (cvictor@protokolgroup.com)
Date: Tue Oct 10 2006 - 12:10:17 ART


Just to test: Try to change the System MTU to 1500 to see if now it works
Do not ask me why.

-----Mensaje original-----
De: Victor Cappuccio [mailto:cvictor@protokolgroup.com]
Enviado el: Domingo, 01 de Octubre de 2006 03:42 p.m.
Para: 'Fabio Rodrigues'; 'ccielab@groupstudy.com'
Asunto: RE: Bridge-group doesn't work in Catalyst (3550 or 3560)

Fabio, I've done some test after the little chat we had
And we can conclude that:

Changing the System MTU to 1500 seems to be working,

Any explanation Why about this behavior??

Sw2#show bridge 1
Br Group Mac Address State Type Ports
-------- ----------- ----- ---- -----
   1 0007.50c9.0c00 Forward DYNAMIC Vl2 Fa0/1
   1 000b.5f55.f80d Forward DYNAMIC Vl2 Fa0/13
   1 000e.8473.7280 Forward DYNAMIC Vl3 Fa0/2
Sw2#
Sw2#sho run int f0/13
Building configuration...

Current configuration : 69 bytes
!
interface FastEthernet0/13
 switchport mode dynamic desirable
end

Sw2#show run int f0/2
Building configuration...

Current configuration : 83 bytes
!
interface FastEthernet0/2
 switchport access vlan 3
 switchport mode access
end

Sw2#show run int f0/1
Building configuration...

Current configuration : 83 bytes
!
interface FastEthernet0/1
 switchport access vlan 2
 switchport mode access
end

Sw2#show run int vlan 2
Building configuration...

Current configuration : 54 bytes
!
interface Vlan2
 no ip address
 bridge-group 1
end

Sw2#show run int vlan 3
Building configuration...

Current configuration : 54 bytes
!
interface Vlan3
 no ip address
 bridge-group 1
end

R1#ping 2001:CC1E:BEBA:CAFE::4

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:CC1E:BEBA:CAFE::4, timeout is 2
seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms

R1#ping 2001:CC1E:BEBA:CAFE::5

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:CC1E:BEBA:CAFE::5, timeout is 2
seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms

R1#show ipv int brief
FastEthernet0/0 [up/up]
    FE80::207:50FF:FEC9:C00
    2001:CC1E:BEBA:CAFE::5
Serial0/0 [up/up]
    unassigned
Serial0/1 [administratively down/down]
    unassigned
Loopback0 [up/up]
    unassigned
R1#show ipv route con
IPv6 Routing Table - 4 entries
Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP
       U - Per-user Static route
       I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary
       O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2
       ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2
C 2001:CC1E:BEBA:CAFE::/64 [0/0]
     via ::, FastEthernet0/0

BB1-TS#2
[Resuming connection 2 to R2 ... ]

R2#ping 2001:CC1E:BEBA:CAFE::4

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:CC1E:BEBA:CAFE::4, timeout is 2
seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
R2#ping 2001:CC1E:BEBA:CAFE::5

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:CC1E:BEBA:CAFE::5, timeout is 2
seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
R2#show ipv route con
IPv6 Routing Table - 4 entries
Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP
       U - Per-user Static route
       I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary
       O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2
       ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2
C 2001:CC1E:BEBA:CAFE::/64 [0/0]
     via ::, FastEthernet0/0
R2#show ipv int brief
FastEthernet0/0 [up/up]
    FE80::20E:84FF:FE73:7280
    2001:CC1E:BEBA:CAFE::4
Serial0/0 [up/up]
    unassigned
Serial0/1 [administratively down/down]
    unassigned
Loopback0 [up/up]
    unassigned

Thanks
Victor.-

-----Mensaje original-----
De: nobody@groupstudy.com [mailto:nobody@groupstudy.com] En nombre de Naveed
Khan
Enviado el: Martes, 10 de Octubre de 2006 10:57 a.m.
Para: ccielab@groupstudy.com
Asunto: fallback bridge

Hi,
Fallback bridge doesn't work. I configure a virtual interface and routed
port.

----------------------------------------------------------------------------
-
----------------------------------
interface Vlan11
 ip address 2.2.10.7 255.255.255.0
 bridge-group 1
!
bridge 1 protocol vlan-bridge
!
int fa0/2
no sw
bridge-group 1
!
Rack1R2(config)#int e0/0
Rack1R2(config-if)#ip add 2.2.10.2 255.255.255.0

Rack1SW1#sh bridge
Br Group Mac Address State Type Ports
-------- ----------- ----- ---- -----
   1 0007.856c.48c0 Forward DYNAMIC Fa0/2
----------------------------------------------------------------------------
-
---------------------------------

when I try to ping ip each other no reply comes. pls let me know where I am
doing mistake.

Naveed



This archive was generated by hypermail 2.1.4 : Wed Nov 01 2006 - 07:29:04 ART