Section 6: DLSw (4 Points) | CCIE Routing and Switching Practice Labs

Configure DLSw between VLAN_11 and VLAN_33. Use FST encapsulation.

If you configured this correctly as shown in Example 5-37, you have scored 2 points.

Example 5-37 has the DLSw configuration between R1 and R3 using FST encapsulation. Example 5-37 shows how to set up the peers and how to verify if the DLSw configuration up and running. Notice the state "CONNECT," which means the DLSw tunnel is up, running, and connected. If the state shows something different, you need to doublecheck your configurations and make sure your IGP is also running fine.

Because it is a "bridge" environment, you need to have the Spanning Tree Protocol enabled. You enable Spanning Tree Protocol using the bridge protocol command.

Example 5-37. R1 and R3 Basic DLSw Configuration

 R1#show run ! dlsw local-peer peer-id 160.10.1.1 dlsw remote-peer 0 fst 160.10.3.3 dlsw bridge-group 1 ! interface Ethernet0/0  ip address 160.10.11.1 255.255.255.0  bridge-group 1 ! bridge 1 protocol ieee ! ! ________________________________________________________________ R3#show run ! ! dlsw local-peer peer-id 160.10.3.3 dlsw remote-peer 0 fst 160.10.1.1 dlsw bridge-group 1 ! interface FastEthernet0/1  ip address 160.10.33.3 255.255.255.0  bridge-group 1 ! ! bridge 1 protocol ieee ! ! R1#show dlsw pee Peers:                state     pkts_rx   pkts_tx  type  drops ckts TCP   uptime  FST 160.10.3.3      CONNECT       3298      3298  conf      0    0   0    1d03h Total number of connected peers: 1 Total number of connections:     1 R1# ! ! R3#show dlsw pee Peers:                state     pkts_rx   pkts_tx  type  drops ckts TCP   uptime  FST 160.10.1.1      CONNECT       3299      3299  conf      0    0   0    1d03h Total number of connected peers: 1 Total number of connections:     1 R3#

You have some users exchanging data through your DLSw connection, but you do not want to compromise the IP traffic of others because DLSw is not your high priority. Configure your DLSw peers so they do not use more than 60 kbps as an average bit rate and set the maximum burst rate of 30 kbps.

If you configured this correctly as shown in Example 5-38, you have scored 1 point.

Example 5-38 shows the necessary configuration to accomplish the task. It is the use of the dlsw history-log command where we can adjust the number of circuits and what kind of Finite State Machine (FSM) will be recorded.

Example 5-38. R1 and R3 RSVP Configuration

 R1#show run ! dlsw rsvp 60 30 ! ! ! ________________________________________________________________ R3#sh run ! ! dlsw rsvp 60 30 ! !

Configure R1 and R3 to not send UDP Unicast and to have the peers sending the resolution address via the existing FST connection.

If you configured this correctly as shown in Example 5-39, you have scored 1 point.

Example 5-39 shows the necessary command to disable the UDP unicast packets to being sent by R1 and R3.

Example 5-39. R1 and R3 RSVP Configuration

 R1#sh run | incl dlsw ! dlsw udp-disable ! ! ________________________________________________________________ R3#sh run | incl dlsw ! dlsw udp-disable ! !