From: Merete Asak (merete@xxxxxxxxx)
Date: Sat Oct 06 2001 - 09:30:37 GMT-3
I read a week ago about someone asking about the ping srb command, and just
wanted to give a short explanation of the command that i found.
ping srb command:
-----------------
The ping srb command is used to ping a dmac address
with a source address specified in the "vmac" part of the "srb ping" command
It sources the vmac address for the packets, which is actually behind the
virtual
token ring. The packets go out on all the physical token ring interfaces
which are attached to the virtual
token ring.This command is especialy useful in the cip to cip network,
especially where
there are no token rings. This can test the connectivity, and can open up
rsrb peers.
It sources SABME, TEST or XID packets using the vmac as the source
address. This source address resides on the buffer-ring which is 1 hop away
from the ring-group. The buffer ring is specified in the "source bridge
ping...
User Interface
The user types in "ping srb" and the destination host address.
The user has to configure a buffer ring, prior to giving the ping command.
Config command
router(config)#source-bridge ring-group 310
router(config)#source-bridge ping 100 10 310 vmac 1111.2222.2222
100 is the local buffer ring. This ring is virtual and any unique ring
number can be assigned to this ring, 10 is the bridge number and
310 is the ring group of the virtual ring being bridged.
router(config)#interface to 4/1
router(config-if)#source bridge 20 10 310
router# ping srb
Target MAC address: 4444.4444.4444
Ring Group :310
Buffer Ring :100
All Route Explorer [n]: y
Send a SABME(S), XID(X), TEST(T) [T]: S
DSAP [0]:
SRB : ping 4444.4444.4444
Enabling debugs : token ring and source bridge
would give the following output
SRB_PING: 100 310 4444.4444.4444, control = 127, dsap = 0
SRB PING: Send ping (linktype = LINK_BRIDGE)
SRB PING: Send ping (linktype = LINK_BRIDGE)
SRB PING: Send ping (linktype = LINK_BRIDGE)
SRB PING: Send ping (linktype = LINK_BRIDGE)
SRB PING: Send ping (linktype = LINK_BRIDGE)
SRB PING: Send ping (linktype = LINK_BRIDGE)
VRING: forward explorer, bn 10 trn 20, [C810.064A.136A.0140]
To4/1: out: MAC: acfc: 0x8040 Dst: 4444.4444.4444 Src:
d111.2222.2222 bf: 0x82 0x6039172C
To4/1: out: RIF: C810.064A.136A.0140
To4/1: out: LLC: 00007F00 1DBB180A BCFB0000 00000000 61D29720 0028CC0D ln: 25
: 00406003 6208EE34 00007000
VRING: forward explorer, bn 10 trn 20, [C810.064A.136A.0140]
To4/1: out: MAC: acfc: 0x8040 Dst: 4444.4444.4444 Src:
d111.2222.2222 bf: 0x82 0x6039172C
To4/1: out: RIF: C810.064A.136A.0140
Merete
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