From: Lab Candidate (labccie@xxxxxxxxx)
Date: Sat Aug 03 2002 - 22:28:19 GMT-3
Khurram, outstanding! it worked....
--- Khurram Khani <kkhani@nortelnetworks.com> wrote:
> Hi
>
> Assigning an IP address on serial wont work. Because Serial Interfaces
> doesn't have a MAC address
> associated with them. R5 is the bridge in your setup. When a packet ingress
> a Bridge or a L2 Switch
> it caches that packet's source mac in forwarding database and does lookup on
> Forwarding database
> for destination MAC and then makes the forwarding decision (either Flood or
> put the packet on a port
> where destination MAC is known). If you make your setup like this, it will
> work
>
> PC1 ----eth0 R3 se0----- se0 r5 s1 ----- se1-R6--eth0 ----- PC2
>
> On R3 put eth0 and se0 in bridge-group 1
> On R5 put se0 and se1 in bridge-group 1
> On R6 put eth0 and se1 in bridge-group 1
>
> Ping from PC 1 to PC2
>
> Thanks
> Khurram.
> ----- Original Message -----
> From: "Lab Candidate" <labccie@yahoo.com>
> To: <ccielab@groupstudy.com>
> Sent: Saturday, August 03, 2002 3:49 PM
> Subject: Bridging across serial intf not working
>
>
> > Hi group,
> >
> > I'm stuck at this bridging over serial interfaces. real simple layout to
> test bridging:
> >
> > r3-s0--------s0-r5-s1---------s1-r6
> >
> > s0 and s1 on r5 are put in bridge-group 1, while r3 and r6 are acting as
> pc hosts to ping each
> > other. pings never got through, not even able to ping BVI 1 on r5.
> >
> > But, if i replaced serial interfaces with ethernet intfs as below, r3 and
> r6 are able to ping each
> > other and the BVI 2 of r5. what is going on here?
> >
> > r3-e0--------f0-r5-f1---------f0-r6
> >
> >
> > r3:
> >
> > interface Serial0/0
> > ip address 1.1.1.3 255.0.0.0
> > clock rate 64000
> > !
> > interface Ethernet0/0
> > ip address 2.2.2.3 255.255.255.0
> > half-duplex
> >
> >
> > r5:
> >
> > interface Serial0/0
> > no ip address
> > bridge-group 1
> > !
> > interface Serial0/1
> > no ip address
> > bridge-group 1
> > !
> > interface FastEthernet0/0
> > no ip address
> > duplex auto
> > speed auto
> > bridge-group 2
> > !
> > interface FastEthernet0/1
> > no ip address
> > duplex auto
> > speed auto
> > bridge-group 2
> > !
> > interface BVI1
> > ip address 1.1.1.5 255.0.0.0
> > !
> > interface BVI2
> > ip address 2.2.2.5 255.255.255.0
> > !
> > bridge irb
> > !
> > bridge 1 protocol ieee
> > bridge 1 route ip
> > bridge 2 protocol ieee
> > bridge 2 route ip
> > !
> >
> >
> > r6:
> >
> > interface FastEthernet0/0
> > ip address 2.2.2.6 255.255.255.0
> > duplex auto
> > speed auto
> > !
> > interface Serial0/1
> > ip address 1.1.1.6 255.0.0.0
> > clock rate 64000
> > !
> >
> > ========================================
> >
> > r6#p 2.2.2.5
> >
> > Type escape sequence to abort.
> > Sending 5, 100-byte ICMP Echos to 2.2.2.5, timeout is 2 seconds:
> > .!!!!
> > Success rate is 80 percent (4/5), round-trip min/avg/max = 1/1/4 ms
> > r6#p 2.2.2.3
> >
> > Type escape sequence to abort.
> > Sending 5, 100-byte ICMP Echos to 2.2.2.3, timeout is 2 seconds:
> > !!!!!
> > Success rate is 100 percent (5/5), round-trip min/avg/max = 1/3/4 ms
> > r6#p 2.2.2.6
> >
> > Type escape sequence to abort.
> > Sending 5, 100-byte ICMP Echos to 2.2.2.6, timeout is 2 seconds:
> > !!!!!
> > Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
> > r6#p 1.1.1.3
> >
> > Type escape sequence to abort.
> > Sending 5, 100-byte ICMP Echos to 1.1.1.3, timeout is 2 seconds:
> > .....
> > Success rate is 0 percent (0/5)
> > r6#p 1.1.1.5
> >
> > Type escape sequence to abort.
> > Sending 5, 100-byte ICMP Echos to 1.1.1.5, timeout is 2 seconds:
> > .....
> > Success rate is 0 percent (0/5)
> > r6#
> >
> > ====================================================
> > r3#ping 2.2.2.6
> >
> > Type escape sequence to abort.
> > Sending 5, 100-byte ICMP Echos to 2.2.2.6, timeout is 2 seconds:
> > !!!!!
> > Success rate is 100 percent (5/5), round-trip min/avg/max = 1/3/4 ms
> > r3#ping 2.2.2.5
> >
> > Type escape sequence to abort.
> > Sending 5, 100-byte ICMP Echos to 2.2.2.5, timeout is 2 seconds:
> > !!!!!
> > Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
> > r3#ping 1.1.1.6
> >
> > Type escape sequence to abort.
> > Sending 5, 100-byte ICMP Echos to 1.1.1.6, timeout is 2 seconds:
> > .....
> > Success rate is 0 percent (0/5)
> > r3#ping 1.1.1.5
> >
> > Type escape sequence to abort.
> > Sending 5, 100-byte ICMP Echos to 1.1.1.5, timeout is 2 seconds:
> > .....
> > Success rate is 0 percent (0/5)
> > r3#
> >
> >
> >
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